ID CVE-2013-4368
Summary The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.
References
Vulnerable Configurations
  • Xen 4.1.6.1
    cpe:2.3:o:xen:xen:4.1.6.1
  • Xen Xen 4.3.0
    cpe:2.3:o:xen:xen:4.3.0
  • Xen 4.2.3
    cpe:2.3:o:xen:xen:4.2.3
  • Xen 4.2.2
    cpe:2.3:o:xen:xen:4.2.2
  • Xen 4.2.1
    cpe:2.3:o:xen:xen:4.2.1
  • Xen 4.2.0
    cpe:2.3:o:xen:xen:4.2.0
  • Xen 4.1.5
    cpe:2.3:o:xen:xen:4.1.5
  • Xen 4.1.4
    cpe:2.3:o:xen:xen:4.1.4
  • Xen 4.1.3
    cpe:2.3:o:xen:xen:4.1.3
  • Xen 4.1.2
    cpe:2.3:o:xen:xen:4.1.2
  • Xen 4.1.1
    cpe:2.3:o:xen:xen:4.1.1
  • Xen 4.1.0
    cpe:2.3:o:xen:xen:4.1.0
  • Xen 4.0.4
    cpe:2.3:o:xen:xen:4.0.4
  • Xen 4.0.3
    cpe:2.3:o:xen:xen:4.0.3
  • Xen 4.0.2
    cpe:2.3:o:xen:xen:4.0.2
  • Xen 4.0.1
    cpe:2.3:o:xen:xen:4.0.1
  • Xen 4.0.0
    cpe:2.3:o:xen:xen:4.0.0
  • Xen 3.4.4
    cpe:2.3:o:xen:xen:3.4.4
  • Xen 3.4.3
    cpe:2.3:o:xen:xen:3.4.3
  • Xen 3.4.2
    cpe:2.3:o:xen:xen:3.4.2
  • Xen 3.4.1
    cpe:2.3:o:xen:xen:3.4.1
  • Xen 3.4.0
    cpe:2.3:o:xen:xen:3.4.0
  • Xen 3.3.2
    cpe:2.3:o:xen:xen:3.3.2
  • Xen 3.3.1
    cpe:2.3:o:xen:xen:3.3.1
  • Xen 3.3.0
    cpe:2.3:o:xen:xen:3.3.0
  • Xen Xen 3.2.3
    cpe:2.3:o:xen:xen:3.2.3
  • Xen Xen 3.2.2
    cpe:2.3:o:xen:xen:3.2.2
  • Xen Xen 3.2.1
    cpe:2.3:o:xen:xen:3.2.1
  • Xen Xen 3.2.0
    cpe:2.3:o:xen:xen:3.2.0
  • Xen Xen 3.1.4
    cpe:2.3:o:xen:xen:3.1.4
  • Xen Xen 3.1.
    cpe:2.3:o:xen:xen:3.1.3
  • Xen Xen 3.0.4
    cpe:2.3:o:xen:xen:3.0.4
  • Xen Xen 3.0.3
    cpe:2.3:o:xen:xen:3.0.3
  • Xen Xen 3.0.2
    cpe:2.3:o:xen:xen:3.0.2
CVSS
Base: 1.9 (as of 18-10-2013 - 11:42)
Impact:
Exploitability:
CWE CWE-200
CAPEC
  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
  • Reusing Session IDs (aka Session Replay)
    This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.
  • Using Slashes in Alternate Encoding
    This attack targets the encoding of the Slash characters. An attacker would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the attacker many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.
Access
VectorComplexityAuthentication
LOCAL MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
nessus via4
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2014-0470-1.NASL
    description The SUSE Linux Enterprise 10 Service Pack 3 LTSS Xen hypervisor and toolset have been updated to fix various security issues : The following security issues have been addressed : XSA-20: CVE-2012-4535: Xen 3.4 through 4.2, and possibly earlier versions, allows local guest OS administrators to cause a denial of service (Xen infinite loop and physical CPU consumption) by setting a VCPU with an 'inappropriate deadline'. (bnc#786516) XSA-22: CVE-2012-4537: Xen 3.4 through 4.2, and possibly earlier versions, does not properly synchronize the p2m and m2p tables when the set_p2m_entry function fails, which allows local HVM guest OS administrators to cause a denial of service (memory consumption and assertion failure), aka 'Memory mapping failure DoS vulnerability'. (bnc#786517) XSA-25: CVE-2012-4544: The PV domain builder in Xen 4.2 and earlier does not validate the size of the kernel or ramdisk (1) before or (2) after decompression, which allows local guest administrators to cause a denial of service (domain 0 memory consumption) via a crafted (a) kernel or (b) ramdisk. (bnc#787163) XSA-29: CVE-2012-5513: The XENMEM_exchange handler in Xen 4.2 and earlier does not properly check the memory address, which allows local PV guest OS administrators to cause a denial of service (crash) or possibly gain privileges via unspecified vectors that overwrite memory in the hypervisor reserved range. (bnc#789951) XSA-31: CVE-2012-5515: The (1) XENMEM_decrease_reservation, (2) XENMEM_populate_physmap, and (3) XENMEM_exchange hypercalls in Xen 4.2 and earlier allow local guest administrators to cause a denial of service (long loop and hang) via a crafted extent_order value. (bnc#789950) XSA-44: CVE-2013-1917: Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction. (bnc#813673) XSA-47: CVE-2013-1920: Xen 4.2.x, 4.1.x, and earlier, when the hypervisor is running 'under memory pressure' and the Xen Security Module (XSM) is enabled, uses the wrong ordering of operations when extending the per-domain event channel tracking table, which causes a use-after-free and allows local guest kernels to inject arbitrary events and gain privileges via unspecified vectors. (bnc#813677) XSA-55: CVE-2013-2196: Multiple unspecified vulnerabilities in the Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel, related to 'other problems' that are not CVE-2013-2194 or CVE-2013-2195. (bnc#823011) XSA-55: CVE-2013-2195: The Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel, related to 'pointer dereferences' involving unexpected calculations. (bnc#823011) XSA-55: CVE-2013-2194: Multiple integer overflows in the Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel. (bnc#823011) XSA-63: CVE-2013-4355: Xen 4.3.x and earlier does not properly handle certain errors, which allows local HVM guests to obtain hypervisor stack memory via a (1) port or (2) memory mapped I/O write or (3) other unspecified operations related to addresses without associated memory. (bnc#840592) XSA-67: CVE-2013-4368: The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register. (bnc#842511) XSA-73: CVE-2013-4494: Xen before 4.1.x, 4.2.x, and 4.3.x does not take the page_alloc_lock and grant_table.lock in the same order, which allows local guest administrators with access to multiple vcpus to cause a denial of service (host deadlock) via unspecified vectors. (bnc#848657) XSA-76: CVE-2013-4554: Xen 3.0.3 through 4.1.x (possibly 4.1.6.1), 4.2.x (possibly 4.2.3), and 4.3.x (possibly 4.3.1) does not properly prevent access to hypercalls, which allows local guest users to gain privileges via a crafted application running in ring 1 or 2. (bnc#849668) XSA-82: CVE-2013-6885: The microcode on AMD 16h 00h through 0Fh processors does not properly handle the interaction between locked instructions and write-combined memory types, which allows local users to cause a denial of service (system hang) via a crafted application, aka the errata 793 issue. (bnc#853049) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-07-31
    plugin id 83617
    published 2015-05-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83617
    title SUSE SLES10 Security Update : Xen (SUSE-SU-2014:0470-1)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2013-1021.NASL
    description Xen was updated to 4.2.3 c/s 26170 to fix various bugs and security issues. Following issues were fixed : - bnc#845520 - CVE-2013-4416: xen: ocaml xenstored mishandles oversized message replies - bnc#833483 - Boot Failure with xen kernel in UEFI mode with error 'No memory for trampoline' - Improvements to block-dmmd script bnc#828623 - bnc#840196 - MTU size on Dom0 gets reset when booting DomU with e1000 device - bnc#840592 - CVE-2013-4355: XSA-63: xen: Information leaks through I/O instruction emulation - bnc#841766 - CVE-2013-4361: XSA-66: xen: Information leak through fbld instruction emulation - bnc#842511 - CVE-2013-4368: XSA-67: xen: Information leak through outs instruction emulation - bnc#842512 - CVE-2013-4369: XSA-68: xen: possible null dereference when parsing vif ratelimiting info - bnc#842513 - CVE-2013-4370: XSA-69: xen: misplaced free in ocaml xc_vcpu_getaffinity stub - bnc#842514 - CVE-2013-4371: XSA-70: xen: use-after-free in libxl_list_cpupool under memory pressure - bnc#842515 - CVE-2013-4375: XSA-71: xen: qemu disk backend (qdisk) resource leak - bnc#839596 - CVE-2013-1442: XSA-62: xen: Information leak on AVX and/or LWP capable CPUs - bnc#833251 - [HP BCS SLES11 Bug]: In HP’s UEFI x86_64 platform and with xen environment, in booting stage ,xen hypervisor will panic. - bnc#833796 - Xen: migration broken from xsave-capable to xsave-incapable host - bnc#834751 - [HP BCS SLES11 Bug]: In xen, “shutdown –y 0 –h” cannot power off system - bnc#839600 - [HP BCS SLES11 Bug]: In HP’s UEFI x86_64 platform and sles11sp3 with xen environment, xen hypervisor will panic on multiple blades nPar. - bnc#833251 - [HP BCS SLES11 Bug]: In HP’s UEFI x86_64 platform and with xen environment, in booting stage ,xen hypervisor will panic. - bnc#835896 - vcpus not started after upgrading Dom0 from 11SP2 to SP3 - bnc#836239 - SLES 11 SP3 Xen security patch does not automatically update UEFI boot binary
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 74865
    published 2014-06-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=74865
    title openSUSE Security Update : xen (openSUSE-SU-2013:1953-1)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2014-0411-1.NASL
    description The SUSE Linux Enterprise Server 10 Service Pack 4 LTSS Xen hypervisor and toolset have been updated to fix various security issues. The following security issues have been addressed : - XSA-82: CVE-2013-6885: The microcode on AMD 16h 00h through 0Fh processors does not properly handle the interaction between locked instructions and write-combined memory types, which allows local users to cause a denial of service (system hang) via a crafted application, aka the errata 793 issue. (bnc#853049) - XSA-76: CVE-2013-4554: Xen 3.0.3 through 4.1.x (possibly 4.1.6.1), 4.2.x (possibly 4.2.3), and 4.3.x (possibly 4.3.1) does not properly prevent access to hypercalls, which allows local guest users to gain privileges via a crafted application running in ring 1 or 2. (bnc#849668) - XSA-73: CVE-2013-4494: Xen before 4.1.x, 4.2.x, and 4.3.x does not take the page_alloc_lock and grant_table.lock in the same order, which allows local guest administrators with access to multiple vcpus to cause a denial of service (host deadlock) via unspecified vectors. (bnc#848657) - XSA-67: CVE-2013-4368: The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register. (bnc#842511) - XSA-63: CVE-2013-4355: Xen 4.3.x and earlier does not properly handle certain errors, which allows local HVM guests to obtain hypervisor stack memory via a (1) port or (2) memory mapped I/O write or (3) other unspecified operations related to addresses without associated memory. (bnc#840592) - XSA-55: CVE-2013-2196: Multiple unspecified vulnerabilities in the Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel, related to 'other problems' that are not CVE-2013-2194 or CVE-2013-2195. (bnc#823011) - XSA-55: CVE-2013-2195: The Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel, related to 'pointer dereferences' involving unexpected calculations. (bnc#823011) - XSA-55: CVE-2013-2194: Multiple integer overflows in the Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel. (bnc#823011) - XSA-47: CVE-2013-1920: Xen 4.2.x, 4.1.x, and earlier, when the hypervisor is running 'under memory pressure' and the Xen Security Module (XSM) is enabled, uses the wrong ordering of operations when extending the per-domain event channel tracking table, which causes a use-after-free and allows local guest kernels to inject arbitrary events and gain privileges via unspecified vectors. (bnc#813677) - XSA-44: CVE-2013-1917: Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction. (bnc#813673) - XSA-25: CVE-2012-4544: The PV domain builder in Xen 4.2 and earlier does not validate the size of the kernel or ramdisk (1) before or (2) after decompression, which allows local guest administrators to cause a denial of service (domain 0 memory consumption) via a crafted (a) kernel or (b) ramdisk. (bnc#787163) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-07-31
    plugin id 83614
    published 2015-05-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83614
    title SUSE SLES10 Security Update : Xen (SUSE-SU-2014:0411-1)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2013-0075.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - x86: check segment descriptor read result in 64-bit OUTS emulation XSA-67 (Matthew Daley) [orabug 17571623] (CVE-2013-4368)
    last seen 2019-02-21
    modified 2017-02-14
    plugin id 79522
    published 2014-11-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=79522
    title OracleVM 2.2 : xen (OVMSA-2013-0075)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2013-1449.NASL
    description Updated kernel packages that fix multiple security issues and one bug are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel handled the creation of temporary IPv6 addresses. If the IPv6 privacy extension was enabled (/proc/sys/net/ipv6/conf/eth0/use_tempaddr is set to '2'), an attacker on the local network could disable IPv6 temporary address generation, leading to a potential information disclosure. (CVE-2013-0343, Moderate) * An information leak flaw was found in the way Linux kernel's device mapper subsystem, under certain conditions, interpreted data written to snapshot block devices. An attacker could use this flaw to read data from disk blocks in free space, which are normally inaccessible. (CVE-2013-4299, Moderate) * An off-by-one flaw was found in the way the ANSI CPRNG implementation in the Linux kernel processed non-block size aligned requests. This could lead to random numbers being generated with less bits of entropy than expected when ANSI CPRNG was used. (CVE-2013-4345, Moderate) * An information leak flaw was found in the way Xen hypervisor emulated the OUTS instruction for 64-bit paravirtualized guests. A privileged guest user could use this flaw to leak hypervisor stack memory to the guest. (CVE-2013-4368, Moderate) Red Hat would like to thank Fujitsu for reporting CVE-2013-4299, Stephan Mueller for reporting CVE-2013-4345, and the Xen project for reporting CVE-2013-4368. This update also fixes the following bug : * A bug in the GFS2 code prevented glock work queues from freeing glock-related memory while the glock memory shrinker repeatedly queued a large number of demote requests, for example when performing a simultaneous backup of several live GFS2 volumes with a large file count. As a consequence, the glock work queues became overloaded which resulted in a high CPU usage and the GFS2 file systems being unresponsive for a significant amount of time. A patch has been applied to alleviate this problem by calling the yield() function after scheduling a certain amount of tasks on the glock work queues. The problem can now occur only with extremely high work loads. (BZ#1014714) All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 70553
    published 2013-10-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=70553
    title RHEL 5 : kernel (RHSA-2013:1449)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2013-19053.NASL
    description Five security fixes CVE-2013-4368 CVE-2013-4369 CVE-2013-4370 CVE-2013-4371 CVE-2013-4375 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2015-10-19
    plugin id 70550
    published 2013-10-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=70550
    title Fedora 18 : xen-4.2.3-4.fc18 (2013-19053)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20131022_KERNEL_ON_SL5_X.NASL
    description - A flaw was found in the way the Linux kernel handled the creation of temporary IPv6 addresses. If the IPv6 privacy extension was enabled (/proc/sys/net/ipv6/conf/eth0/use_tempaddr is set to '2'), an attacker on the local network could disable IPv6 temporary address generation, leading to a potential information disclosure. (CVE-2013-0343, Moderate) - An information leak flaw was found in the way Linux kernel's device mapper subsystem, under certain conditions, interpreted data written to snapshot block devices. An attacker could use this flaw to read data from disk blocks in free space, which are normally inaccessible. (CVE-2013-4299, Moderate) - An off-by-one flaw was found in the way the ANSI CPRNG implementation in the Linux kernel processed non-block size aligned requests. This could lead to random numbers being generated with less bits of entropy than expected when ANSI CPRNG was used. (CVE-2013-4345, Moderate) - An information leak flaw was found in the way Xen hypervisor emulated the OUTS instruction for 64-bit paravirtualized guests. A privileged guest user could use this flaw to leak hypervisor stack memory to the guest. (CVE-2013-4368, Moderate) This update also fixes the following bug : - A bug in the GFS2 code prevented glock work queues from freeing glock- related memory while the glock memory shrinker repeatedly queued a large number of demote requests, for example when performing a simultaneous backup of several live GFS2 volumes with a large file count. As a consequence, the glock work queues became overloaded which resulted in a high CPU usage and the GFS2 file systems being unresponsive for a significant amount of time. A patch has been applied to alleviate this problem by calling the yield() function after scheduling a certain amount of tasks on the glock work queues. The problem can now occur only with extremely high work loads. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-12-31
    plugin id 70577
    published 2013-10-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=70577
    title Scientific Linux Security Update : kernel on SL5.x i386/x86_64
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2013-1449-1.NASL
    description From Red Hat Security Advisory 2013:1449 : Updated kernel packages that fix multiple security issues and one bug are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel handled the creation of temporary IPv6 addresses. If the IPv6 privacy extension was enabled (/proc/sys/net/ipv6/conf/eth0/use_tempaddr is set to '2'), an attacker on the local network could disable IPv6 temporary address generation, leading to a potential information disclosure. (CVE-2013-0343, Moderate) * An information leak flaw was found in the way Linux kernel's device mapper subsystem, under certain conditions, interpreted data written to snapshot block devices. An attacker could use this flaw to read data from disk blocks in free space, which are normally inaccessible. (CVE-2013-4299, Moderate) * An off-by-one flaw was found in the way the ANSI CPRNG implementation in the Linux kernel processed non-block size aligned requests. This could lead to random numbers being generated with less bits of entropy than expected when ANSI CPRNG was used. (CVE-2013-4345, Moderate) * An information leak flaw was found in the way Xen hypervisor emulated the OUTS instruction for 64-bit paravirtualized guests. A privileged guest user could use this flaw to leak hypervisor stack memory to the guest. (CVE-2013-4368, Moderate) Red Hat would like to thank Fujitsu for reporting CVE-2013-4299, Stephan Mueller for reporting CVE-2013-4345, and the Xen project for reporting CVE-2013-4368. This update also fixes the following bug : * A bug in the GFS2 code prevented glock work queues from freeing glock-related memory while the glock memory shrinker repeatedly queued a large number of demote requests, for example when performing a simultaneous backup of several live GFS2 volumes with a large file count. As a consequence, the glock work queues became overloaded which resulted in a high CPU usage and the GFS2 file systems being unresponsive for a significant amount of time. A patch has been applied to alleviate this problem by calling the yield() function after scheduling a certain amount of tasks on the glock work queues. The problem can now occur only with extremely high work loads. (BZ#1014714) All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2015-12-01
    plugin id 70574
    published 2013-10-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=70574
    title Oracle Linux 5 : kernel (ELSA-2013-1449-1)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2014-0446-1.NASL
    description The SUSE Linux Enterprise Server 11 Service Pack 1 LTSS Xen hypervisor and toolset have been updated to fix various security issues and some bugs. The following security issues have been addressed : XSA-84: CVE-2014-1894: Xen 3.2 (and presumably earlier) exhibit both problems with the overflow issue being present for more than just the suboperations listed above. (bnc#860163) XSA-84: CVE-2014-1892 CVE-2014-1893: Xen 3.3 through 4.1, while not affected by the above overflow, have a different overflow issue on FLASK_{GET,SET}BOOL and expose unreasonably large memory allocation to arbitrary guests. (bnc#860163) XSA-84: CVE-2014-1891: The FLASK_{GET,SET}BOOL, FLASK_USER and FLASK_CONTEXT_TO_SID suboperations of the flask hypercall are vulnerable to an integer overflow on the input size. The hypercalls attempt to allocate a buffer which is 1 larger than this size and is therefore vulnerable to integer overflow and an attempt to allocate then access a zero byte buffer. (bnc#860163) XSA-82: CVE-2013-6885: The microcode on AMD 16h 00h through 0Fh processors does not properly handle the interaction between locked instructions and write-combined memory types, which allows local users to cause a denial of service (system hang) via a crafted application, aka the errata 793 issue. (bnc#853049) XSA-76: CVE-2013-4554: Xen 3.0.3 through 4.1.x (possibly 4.1.6.1), 4.2.x (possibly 4.2.3), and 4.3.x (possibly 4.3.1) does not properly prevent access to hypercalls, which allows local guest users to gain privileges via a crafted application running in ring 1 or 2. (bnc#849668) XSA-74: CVE-2013-4553: The XEN_DOMCTL_getmemlist hypercall in Xen 3.4.x through 4.3.x (possibly 4.3.1) does not always obtain the page_alloc_lock and mm_rwlock in the same order, which allows local guest administrators to cause a denial of service (host deadlock). (bnc#849667) XSA-73: CVE-2013-4494: Xen before 4.1.x, 4.2.x, and 4.3.x does not take the page_alloc_lock and grant_table.lock in the same order, which allows local guest administrators with access to multiple vcpus to cause a denial of service (host deadlock) via unspecified vectors. (bnc#848657) XSA-67: CVE-2013-4368: The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register. (bnc#842511) XSA-66: CVE-2013-4361: The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the instruction. (bnc#841766) XSA-63: CVE-2013-4355: Xen 4.3.x and earlier does not properly handle certain errors, which allows local HVM guests to obtain hypervisor stack memory via a (1) port or (2) memory mapped I/O write or (3) other unspecified operations related to addresses without associated memory. (bnc#840592) XSA-62: CVE-2013-1442: Xen 4.0 through 4.3.x, when using AVX or LWP capable CPUs, does not properly clear previous data from registers when using an XSAVE or XRSTOR to extend the state components of a saved or restored vCPU after touching other restored extended registers, which allows local guest OSes to obtain sensitive information by reading the registers. (bnc#839596) XSA-61: CVE-2013-4329: The xenlight library (libxl) in Xen 4.0.x through 4.2.x, when IOMMU is disabled, provides access to a busmastering-capable PCI passthrough device before the IOMMU setup is complete, which allows local HVM guest domains to gain privileges or cause a denial of service via a DMA instruction. (bnc#839618) XSA-60: CVE-2013-2212: The vmx_set_uc_mode function in Xen 3.3 through 4.3, when disabling chaches, allows local HVM guests with access to memory mapped I/O regions to cause a denial of service (CPU consumption and possibly hypervisor or guest kernel panic) via a crafted GFN range. (bnc#831120) XSA-58: CVE-2013-1918: Certain page table manipulation operations in Xen 4.1.x, 4.2.x, and earlier are not preemptible, which allows local PV kernels to cause a denial of service via vectors related to 'deep page table traversal.' (bnc#826882) XSA-58: CVE-2013-1432: Xen 4.1.x and 4.2.x, when the XSA-45 patch is in place, does not properly maintain references on pages stored for deferred cleanup, which allows local PV guest kernels to cause a denial of service (premature page free and hypervisor crash) or possible gain privileges via unspecified vectors. (bnc#826882) XSA-57: CVE-2013-2211: The libxenlight (libxl) toolstack library in Xen 4.0.x, 4.1.x, and 4.2.x uses weak permissions for xenstore keys for paravirtualised and emulated serial console devices, which allows local guest administrators to modify the xenstore value via unspecified vectors. (bnc#823608) XSA-56: CVE-2013-2072: Buffer overflow in the Python bindings for the xc_vcpu_setaffinity call in Xen 4.0.x, 4.1.x, and 4.2.x allows local administrators with permissions to configure VCPU affinity to cause a denial of service (memory corruption and xend toolstack crash) and possibly gain privileges via a crafted cpumap. (bnc#819416) XSA-55: CVE-2013-2196: Multiple unspecified vulnerabilities in the Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel, related to 'other problems' that are not CVE-2013-2194 or CVE-2013-2195. (bnc#823011) XSA-55: CVE-2013-2195: The Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel, related to 'pointer dereferences' involving unexpected calculations. (bnc#823011) XSA-55: CVE-2013-2194: Multiple integer overflows in the Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel. (bnc#823011) XSA-53: CVE-2013-2077: Xen 4.0.x, 4.1.x, and 4.2.x does not properly restrict the contents of a XRSTOR, which allows local PV guest users to cause a denial of service (unhandled exception and hypervisor crash) via unspecified vectors. (bnc#820919) XSA-52: CVE-2013-2076: Xen 4.0.x, 4.1.x, and 4.2.x, when running on AMD64 processors, only save/restore the FOP, FIP, and FDP x87 registers in FXSAVE/FXRSTOR when an exception is pending, which allows one domain to determine portions of the state of floating point instructions of other domains, which can be leveraged to obtain sensitive information such as cryptographic keys, a similar vulnerability to CVE-2006-1056. NOTE: this is the documented behavior of AMD64 processors, but it is inconsistent with Intel processors in a security-relevant fashion that was not addressed by the kernels. (bnc#820917) XSA-50: CVE-2013-1964: Xen 4.0.x and 4.1.x incorrectly releases a grant reference when releasing a non-v1, non-transitive grant, which allows local guest administrators to cause a denial of service (host crash), obtain sensitive information, or possible have other impacts via unspecified vectors. (bnc#816156) XSA-49: CVE-2013-1952: Xen 4.x, when using Intel VT-d for a bus mastering capable PCI device, does not properly check the source when accessing a bridge device's interrupt remapping table entries for MSI interrupts, which allows local guest domains to cause a denial of service (interrupt injection) via unspecified vectors. (bnc#816163) XSA-47: CVE-2013-1920: Xen 4.2.x, 4.1.x, and earlier, when the hypervisor is running 'under memory pressure' and the Xen Security Module (XSM) is enabled, uses the wrong ordering of operations when extending the per-domain event channel tracking table, which causes a use-after-free and allows local guest kernels to inject arbitrary events and gain privileges via unspecified vectors. (bnc#813677) XSA-46: CVE-2013-1919: Xen 4.2.x and 4.1.x does not properly restrict access to IRQs, which allows local stub domain clients to gain access to IRQs and cause a denial of service via vectors related to 'passed-through IRQs or PCI devices.' (bnc#813675) XSA-45: CVE-2013-1918: Certain page table manipulation operations in Xen 4.1.x, 4.2.x, and earlier are not preemptible, which allows local PV kernels to cause a denial of service via vectors related to 'deep page table traversal.' (bnc#816159) XSA-44: CVE-2013-1917: Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction. (bnc#813673) XSA-41: CVE-2012-6075: Buffer overflow in the e1000_receive function in the e1000 device driver (hw/e1000.c) in QEMU 1.3.0-rc2 and other versions, when the SBP and LPE flags are disabled, allows remote attackers to cause a denial of service (guest OS crash) and possibly execute arbitrary guest code via a large packet. (bnc#797523) XSA-37: CVE-2013-0154: The get_page_type function in xen/arch/x86/mm.c in Xen 4.2, when debugging is enabled, allows local PV or HVM guest administrators to cause a denial of service (assertion failure and hypervisor crash) via unspecified vectors related to a hypercall. (bnc#797031) XSA-36: CVE-2013-0153: The AMD IOMMU support in Xen 4.2.x, 4.1.x, 3.3, and other versions, when using AMD-Vi for PCI passthrough, uses the same interrupt remapping table for the host and all guests, which allows guests to cause a denial of service by injecting an interrupt into other guests. (bnc#800275) XSA-33: CVE-2012-5634: Xen 4.2.x, 4.1.x, and 4.0, when using Intel VT-d for PCI passthrough, does not properly configure VT-d when supporting a device that is behind a legacy PCI Bridge, which allows local guests to cause a denial of service to other guests by injecting an interrupt. (bnc#794316) XSA-31: CVE-2012-5515: The (1) XENMEM_decrease_reservation, (2) XENMEM_populate_physmap, and (3) XENMEM_exchange hypercalls in Xen 4.2 and earlier allow local guest administrators to cause a denial of service (long loop and hang) via a crafted extent_order value. (bnc#789950) XSA-30: CVE-2012-5514: The guest_physmap_mark_populate_on_demand function in Xen 4.2 and earlier does not properly unlock the subject GFNs when checking if they are in use, which allows local guest HVM administrators to cause a denial of service (hang) via unspecified vectors. (bnc#789948) XSA-29: CVE-2012-5513: The XENMEM_exchange handler in Xen 4.2 and earlier does not properly check the memory address, which allows local PV guest OS administrators to cause a denial of service (crash) or possibly gain privileges via unspecified vectors that overwrite memory in the hypervisor reserved range. (bnc#789951) XSA-27: CVE-2012-6333: Multiple HVM control operations in Xen 3.4 through 4.2 allow local HVM guest OS administrators to cause a denial of service (physical CPU consumption) via a large input. (bnc#789944) XSA-27: CVE-2012-5511: Stack-based buffer overflow in the dirty video RAM tracking functionality in Xen 3.4 through 4.1 allows local HVM guest OS administrators to cause a denial of service (crash) via a large bitmap image. (bnc#789944) XSA-26: CVE-2012-5510: Xen 4.x, when downgrading the grant table version, does not properly remove the status page from the tracking list when freeing the page, which allows local guest OS administrators to cause a denial of service (hypervisor crash) via unspecified vectors. (bnc#789945) XSA-25: CVE-2012-4544: The PV domain builder in Xen 4.2 and earlier does not validate the size of the kernel or ramdisk (1) before or (2) after decompression, which allows local guest administrators to cause a denial of service (domain 0 memory consumption) via a crafted (a) kernel or (b) ramdisk. (bnc#787163) XSA-24: CVE-2012-4539: Xen 4.0 through 4.2, when running 32-bit x86 PV guests on 64-bit hypervisors, allows local guest OS administrators to cause a denial of service (infinite loop and hang or crash) via invalid arguments to GNTTABOP_get_status_frames, aka 'Grant table hypercall infinite loop DoS vulnerability.' (bnc#786520) XSA-23: CVE-2012-4538: The HVMOP_pagetable_dying hypercall in Xen 4.0, 4.1, and 4.2 does not properly check the pagetable state when running on shadow pagetables, which allows a local HVM guest OS to cause a denial of service (hypervisor crash) via unspecified vectors. (bnc#786519) XSA-22: CVE-2012-4537: Xen 3.4 through 4.2, and possibly earlier versions, does not properly synchronize the p2m and m2p tables when the set_p2m_entry function fails, which allows local HVM guest OS administrators to cause a denial of service (memory consumption and assertion failure), aka 'Memory mapping failure DoS vulnerability.' (bnc#786517) XSA-20: CVE-2012-4535: Xen 3.4 through 4.2, and possibly earlier versions, allows local guest OS administrators to cause a denial of service (Xen infinite loop and physical CPU consumption) by setting a VCPU with an 'inappropriate deadline.' (bnc#786516) XSA-19: CVE-2012-4411: The graphical console in Xen 4.0, 4.1 and 4.2 allows local OS guest administrators to obtain sensitive host resource information via the qemu monitor. NOTE: this might be a duplicate of CVE-2007-0998. (bnc#779212) XSA-15: CVE-2012-3497: (1) TMEMC_SAVE_GET_CLIENT_WEIGHT, (2) TMEMC_SAVE_GET_CLIENT_CAP, (3) TMEMC_SAVE_GET_CLIENT_FLAGS and (4) TMEMC_SAVE_END in the Transcendent Memory (TMEM) in Xen 4.0, 4.1, and 4.2 allow local guest OS users to cause a denial of service (NULL pointer dereference or memory corruption and host crash) or possibly have other unspecified impacts via a NULL client id. (bnc#777890) Also the following non-security bugs have been fixed : - xen hot plug attach/detach fails modified blktap-pv-cdrom.patch. (bnc#805094) - guest 'disappears' after live migration Updated block-dmmd script. (bnc#777628) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-07-31
    plugin id 83616
    published 2015-05-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83616
    title SUSE SLES11 Security Update : Xen (SUSE-SU-2014:0446-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2013-19048.NASL
    description Five security fixes CVE-2013-4368 CVE-2013-4369 CVE-2013-4370 CVE-2013-4371 CVE-2013-4375 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2015-10-19
    plugin id 70549
    published 2013-10-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=70549
    title Fedora 19 : xen-4.2.3-4.fc19 (2013-19048)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2015-0068.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2015-0068 for details.
    last seen 2019-02-21
    modified 2018-09-05
    plugin id 84140
    published 2015-06-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=84140
    title OracleVM 3.2 : xen (OVMSA-2015-0068) (POODLE) (Venom)
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201407-03.NASL
    description The remote host is affected by the vulnerability described in GLSA-201407-03 (Xen: Multiple Vunlerabilities) Multiple vulnerabilities have been discovered in Xen. Please review the CVE identifiers referenced below for details. Impact : A remote attacker can utilize multiple vectors to execute arbitrary code, cause Denial of Service, or gain access to data on the host. Workaround : There is no known workaround at this time.
    last seen 2019-02-21
    modified 2015-04-13
    plugin id 76544
    published 2014-07-17
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=76544
    title GLSA-201407-03 : Xen: Multiple Vunlerabilities
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-3006.NASL
    description Multiple security issues have been discovered in the Xen virtualisation solution which may result in information leaks or denial of service.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 77240
    published 2014-08-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=77240
    title Debian DSA-3006-1 : xen - security update
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2013-1774-1.NASL
    description XEN has been updated to version 4.2.3 c/s 26170, fixing various bugs and security issues. - CVE-2013-4416: XSA-72: Fixed ocaml xenstored that mishandled oversized message replies - CVE-2013-4355: XSA-63: Fixed information leaks through I/O instruction emulation - CVE-2013-4361: XSA-66: Fixed information leak through fbld instruction emulation - CVE-2013-4368: XSA-67: Fixed information leak through outs instruction emulation - CVE-2013-4369: XSA-68: Fixed possible null dereference when parsing vif ratelimiting info - CVE-2013-4370: XSA-69: Fixed misplaced free in ocaml xc_vcpu_getaffinity stub - CVE-2013-4371: XSA-70: Fixed use-after-free in libxl_list_cpupool under memory pressure - CVE-2013-4375: XSA-71: xen: qemu disk backend (qdisk) resource leak - CVE-2013-1442: XSA-62: Fixed information leak on AVX and/or LWP capable CPUs - CVE-2013-1432: XSA-58: Page reference counting error due to XSA-45/CVE-2013-1918 fixes. Various bugs have also been fixed : - Boot failure with xen kernel in UEFI mode with error 'No memory for trampoline' (bnc#833483) - Improvements to block-dmmd script (bnc#828623) - MTU size on Dom0 gets reset when booting DomU with e1000 device (bnc#840196) - In HP's UEFI x86_64 platform and with xen environment, in booting stage, xen hypervisor will panic. (bnc#833251) - Xen: migration broken from xsave-capable to xsave-incapable host (bnc#833796) - In xen, 'shutdown -y 0 -h' cannot power off system (bnc#834751) - In HP's UEFI x86_64 platform with xen environment, xen hypervisor will panic on multiple blades nPar. (bnc#839600) - vcpus not started after upgrading Dom0 from SLES 11 SP2 to SP3 (bnc#835896) - SLES 11 SP3 Xen security patch does not automatically update UEFI boot binary (bnc#836239) - Failed to setup devices for vm instance when start multiple vms simultaneously (bnc#824676) - SLES 9 SP4 guest fails to start after upgrading to SLES 11 SP3 (bnc#817799) - Various upstream fixes have been included. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-07-31
    plugin id 83602
    published 2015-05-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83602
    title SUSE SLED11 / SLES11 Security Update : Xen (SUSE-SU-2013:1774-1)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2013-1449.NASL
    description From Red Hat Security Advisory 2013:1449 : Updated kernel packages that fix multiple security issues and one bug are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel handled the creation of temporary IPv6 addresses. If the IPv6 privacy extension was enabled (/proc/sys/net/ipv6/conf/eth0/use_tempaddr is set to '2'), an attacker on the local network could disable IPv6 temporary address generation, leading to a potential information disclosure. (CVE-2013-0343, Moderate) * An information leak flaw was found in the way Linux kernel's device mapper subsystem, under certain conditions, interpreted data written to snapshot block devices. An attacker could use this flaw to read data from disk blocks in free space, which are normally inaccessible. (CVE-2013-4299, Moderate) * An off-by-one flaw was found in the way the ANSI CPRNG implementation in the Linux kernel processed non-block size aligned requests. This could lead to random numbers being generated with less bits of entropy than expected when ANSI CPRNG was used. (CVE-2013-4345, Moderate) * An information leak flaw was found in the way Xen hypervisor emulated the OUTS instruction for 64-bit paravirtualized guests. A privileged guest user could use this flaw to leak hypervisor stack memory to the guest. (CVE-2013-4368, Moderate) Red Hat would like to thank Fujitsu for reporting CVE-2013-4299, Stephan Mueller for reporting CVE-2013-4345, and the Xen project for reporting CVE-2013-4368. This update also fixes the following bug : * A bug in the GFS2 code prevented glock work queues from freeing glock-related memory while the glock memory shrinker repeatedly queued a large number of demote requests, for example when performing a simultaneous backup of several live GFS2 volumes with a large file count. As a consequence, the glock work queues became overloaded which resulted in a high CPU usage and the GFS2 file systems being unresponsive for a significant amount of time. A patch has been applied to alleviate this problem by calling the yield() function after scheduling a certain amount of tasks on the glock work queues. The problem can now occur only with extremely high work loads. (BZ#1014714) All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2015-12-01
    plugin id 70575
    published 2013-10-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=70575
    title Oracle Linux 5 : kernel (ELSA-2013-1449)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2013-0072.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - x86: check segment descriptor read result in 64-bit OUTS emulation When emulating such an operation from a 64-bit context (CS has long mode set), and the data segment is overridden to FS/GS, the result of reading the overridden segment's descriptor (read_descriptor) is not checked. If it fails, data_base is left uninitialized. This can lead to 8 bytes of Xen's stack being leaked to the guest (implicitly, i.e. via the address given in a #PF). Coverity-ID: 1055116 This is CVE-2013-4368 / XSA-67. Fix formatting. (CVE-2013-4368)
    last seen 2019-02-21
    modified 2017-02-14
    plugin id 79519
    published 2014-11-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=79519
    title OracleVM 3.2 : xen (OVMSA-2013-0072)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2013-1449.NASL
    description Updated kernel packages that fix multiple security issues and one bug are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel handled the creation of temporary IPv6 addresses. If the IPv6 privacy extension was enabled (/proc/sys/net/ipv6/conf/eth0/use_tempaddr is set to '2'), an attacker on the local network could disable IPv6 temporary address generation, leading to a potential information disclosure. (CVE-2013-0343, Moderate) * An information leak flaw was found in the way Linux kernel's device mapper subsystem, under certain conditions, interpreted data written to snapshot block devices. An attacker could use this flaw to read data from disk blocks in free space, which are normally inaccessible. (CVE-2013-4299, Moderate) * An off-by-one flaw was found in the way the ANSI CPRNG implementation in the Linux kernel processed non-block size aligned requests. This could lead to random numbers being generated with less bits of entropy than expected when ANSI CPRNG was used. (CVE-2013-4345, Moderate) * An information leak flaw was found in the way Xen hypervisor emulated the OUTS instruction for 64-bit paravirtualized guests. A privileged guest user could use this flaw to leak hypervisor stack memory to the guest. (CVE-2013-4368, Moderate) Red Hat would like to thank Fujitsu for reporting CVE-2013-4299, Stephan Mueller for reporting CVE-2013-4345, and the Xen project for reporting CVE-2013-4368. This update also fixes the following bug : * A bug in the GFS2 code prevented glock work queues from freeing glock-related memory while the glock memory shrinker repeatedly queued a large number of demote requests, for example when performing a simultaneous backup of several live GFS2 volumes with a large file count. As a consequence, the glock work queues became overloaded which resulted in a high CPU usage and the GFS2 file systems being unresponsive for a significant amount of time. A patch has been applied to alleviate this problem by calling the yield() function after scheduling a certain amount of tasks on the glock work queues. The problem can now occur only with extremely high work loads. (BZ#1014714) All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 70570
    published 2013-10-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=70570
    title CentOS 5 : kernel (CESA-2013:1449)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2013-0073.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - bug 17571611 (CVE-2013-4368)
    last seen 2019-02-21
    modified 2017-02-14
    plugin id 79520
    published 2014-11-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=79520
    title OracleVM 3.1 : xen (OVMSA-2013-0073)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2013-0074.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - x86: check segment descriptor read result in 64-bit OUTS emulation XSA-67 (Matthew Daley) [orabug 17571640] (CVE-2013-4368) - x86: properly set up fbld emulation operand address XSA-66 (Jan Beulich) [orabug 17472492] (CVE-2013-4361) - x86: properly handle hvm_copy_from_guest_[phys,virt] errors XSA-63 (Jan Beulich) [orabug 17472461] (CVE-2013-4355) - libxc: builder: limit maximum size of kernel/ramdisk (Ian Campbell) [orabug 15852491] (CVE-2012-4544) - libxc: builder: Correct fix for CVE-2012-4544 (Ian Campbell) [orabug 15852491] (CVE-2012-4544) - [PATCH 01/21] libelf: abolish libelf-relocate.c (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 02/21] libxc: introduce xc_dom_seg_to_ptr_pages (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 03/21] libxc: Fix range checking in xc_dom_pfn_to_ptr etc. (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 04/21] libelf: abolish elf_sval and elf_access_signed (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 05/21] libelf/xc_dom_load_elf_symtab: Do not use 'syms' uninitialised (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 06/21] libelf: introduce macros for memory access and pointer handling (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 07/21] tools/xcutils/readnotes: adjust print_l1_mfn_valid_note (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 08/21] libelf: check nul-terminated strings properly (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 09/21] libelf: check all pointer accesses (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 10/21] libelf: Check pointer references in elf_is_elfbinary (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 11/21] libelf: Make all callers call elf_check_broken (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 12/21] libelf: use C99 bool for booleans (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 13/21] libelf: use only unsigned integers (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 14/21] libxc: Introduce xc_bitops.h (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 15/21] libelf: check loops for running away (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 16/21] libelf: abolish obsolete macros (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 17/21] libxc: Add range checking to xc_dom_binloader (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 18/21] libxc: check failure of xc_dom_*_to_ptr, xc_map_foreign_range (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 19/21] libxc: check return values from malloc (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 20/21] libxc: range checks in xc_dom_p2m_host and _guest (Ian Jackson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - [PATCH 21/21] libxc: check blob size before proceeding in xc_dom_check_gzip (Matthew Daley) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - libxc: define INVALID_MFN for the XSA-55 patchset (Chuck Anderson) [orabug 16902308] (CVE-2013-2194 CVE-2013-2195 CVE-2013-2196) - fix page refcount handling in page table pin error path (Andrew Cooper) [orabug 16949882] (CVE-2013-1432) - remove CVE-2013-1919 (Chuck Anderson) [orabug 16635741] (CVE-2013-1919) - x86: make vcpu_destroy_pagetables preemptible (Jan Beulich) [orabug 16714903] (CVE-2013-1918) - x86: make new_guest_cr3 preemptible (Jan Beulich) [orabug 16714903] (CVE-2013-1918) - x86: make MMUEXT_NEW_USER_BASEPTR preemptible (Jan Beulich) [orabug 16714903] (CVE-2013-1918) - x86: make vcpu_reset preemptible (Jan Beulich) [orabug 16714903] (CVE-2013-1918) - x86: make arch_set_info_guest preemptible (Jan Beulich) [orabug 16714903] (CVE-2013-1918) - x86: make page table unpinning preemptible (Jan Beulich) [orabug 16714903] (CVE-2013-1918) - x86: make page table handling error paths preemptible (Jan Beulich) [orabug 16714903] (CVE-2013-1918)
    last seen 2019-02-21
    modified 2017-02-14
    plugin id 79521
    published 2014-11-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=79521
    title OracleVM 2.2 : xen (OVMSA-2013-0074)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_11_XEN-201310-131029.NASL
    description XEN has been updated to version 4.2.3 c/s 26170, fixing various bugs and security issues. - XSA-72: Fixed ocaml xenstored that mishandled oversized message replies. (CVE-2013-4416) - XSA-63: Fixed information leaks through I/O instruction emulation. (CVE-2013-4355) - XSA-66: Fixed information leak through fbld instruction emulation. (CVE-2013-4361) - XSA-67: Fixed information leak through outs instruction emulation. (CVE-2013-4368) - XSA-68: Fixed possible null dereference when parsing vif ratelimiting info. (CVE-2013-4369) - XSA-69: Fixed misplaced free in ocaml xc_vcpu_getaffinity stub. (CVE-2013-4370) - XSA-70: Fixed use-after-free in libxl_list_cpupool under memory pressure. (CVE-2013-4371) - XSA-71: xen: qemu disk backend (qdisk) resource leak. (CVE-2013-4375) - XSA-62: Fixed information leak on AVX and/or LWP capable CPUs. (CVE-2013-1442) - XSA-58: Page reference counting error due to XSA-45/CVE-2013-1918 fixes. Various bugs have also been fixed:. (CVE-2013-1432) - Boot failure with xen kernel in UEFI mode with error 'No memory for trampoline'. (bnc#833483) - Improvements to block-dmmd script. (bnc#828623) - MTU size on Dom0 gets reset when booting DomU with e1000 device. (bnc#840196) - In HP's UEFI x86_64 platform and with xen environment, in booting stage, xen hypervisor will panic. (bnc#833251) - Xen: migration broken from xsave-capable to xsave-incapable host. (bnc#833796) - In xen, 'shutdown -y 0 -h' cannot power off system. (bnc#834751) - In HP's UEFI x86_64 platform with xen environment, xen hypervisor will panic on multiple blades nPar. (bnc#839600) - vcpus not started after upgrading Dom0 from SLES 11 SP2 to SP3. (bnc#835896) - SLES 11 SP3 Xen security patch does not automatically update UEFI boot binary. (bnc#836239) - Failed to setup devices for vm instance when start multiple vms simultaneously. (bnc#824676) - SLES 9 SP4 guest fails to start after upgrading to SLES 11 SP3. (bnc#817799) - Various upstream fixes have been included.
    last seen 2019-02-21
    modified 2014-07-26
    plugin id 70969
    published 2013-11-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=70969
    title SuSE 11.2 / 11.3 Security Update : Xen (SAT Patch Numbers 8478 / 8479)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2013-821.NASL
    description Xen was updated to 4.1.6 c/s 23588 to fix various bugs and security issues. Following changes are listed : - Comment out the -include directive in Config.mk as the build service build seems to error out not finding '.config' xen-config.diff - bnc#845520 - CVE-2013-4416: xen: ocaml xenstored mishandles oversized message replies - Improvements to block-dmmd script bnc#828623 - bnc#840196 - MTU size on Dom0 gets reset when booting DomU with e1000 device - bnc#840592 - CVE-2013-4355: XSA-63: xen: Information leaks through I/O instruction emulation - bnc#841766 - CVE-2013-4361: XSA-66: xen: Information leak through fbld instruction emulation - bnc#842511 - CVE-2013-4368: XSA-67: xen: Information leak through outs instruction emulation - xen/27397-ACPI-fix-acpi_os_map_memory.patch: address regression - bnc#839596 - CVE-2013-1442: XSA-62: xen: Information leak on AVX and/or LWP capable CPUs - bnc#833251 - In HP’s UEFI x86_64 platform and with xen environment, in booting stage ,xen hypervisor will panic. - bnc#833796 - Xen: migration broken from xsave-capable to xsave-incapable host - bnc#834751 - In xen, “shutdown –y 0 –h” cannot power off system - bnc#833251 - In HP’s UEFI x86_64 platform and with xen environment, in booting stage ,xen hypervisor will panic. - bnc#839600 - In HP’s UEFI x86_64 platform and sles11sp3 with xen environment, xen hypervisor will panic on multiple blades nPar.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 75189
    published 2014-06-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=75189
    title openSUSE Security Update : xen (openSUSE-SU-2013:1636-1)
redhat via4
advisories
bugzilla
id 1012550
title CVE-2013-4368 xen: information leak through outs instruction emulation (XSA-67)
oval
AND
  • comment Red Hat Enterprise Linux 5 is installed
    oval oval:com.redhat.rhba:tst:20070331001
  • OR
    • AND
      • comment kernel is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449002
      • comment kernel is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314003
    • AND
      • comment kernel-PAE is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449020
      • comment kernel-PAE is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314021
    • AND
      • comment kernel-PAE-devel is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449022
      • comment kernel-PAE-devel is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314023
    • AND
      • comment kernel-debug is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449010
      • comment kernel-debug is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314015
    • AND
      • comment kernel-debug-devel is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449012
      • comment kernel-debug-devel is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314009
    • AND
      • comment kernel-devel is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449006
      • comment kernel-devel is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314007
    • AND
      • comment kernel-doc is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449024
      • comment kernel-doc is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314025
    • AND
      • comment kernel-headers is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449004
      • comment kernel-headers is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314005
    • AND
      • comment kernel-kdump is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449016
      • comment kernel-kdump is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314017
    • AND
      • comment kernel-kdump-devel is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449018
      • comment kernel-kdump-devel is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314019
    • AND
      • comment kernel-xen is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449014
      • comment kernel-xen is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314011
    • AND
      • comment kernel-xen-devel is earlier than 0:2.6.18-371.1.2.el5
        oval oval:com.redhat.rhsa:tst:20131449008
      • comment kernel-xen-devel is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314013
rhsa
id RHSA-2013:1449
released 2013-10-22
severity Moderate
title RHSA-2013:1449: kernel security and bug fix update (Moderate)
rpms
  • kernel-0:2.6.18-371.1.2.el5
  • kernel-PAE-0:2.6.18-371.1.2.el5
  • kernel-PAE-devel-0:2.6.18-371.1.2.el5
  • kernel-debug-0:2.6.18-371.1.2.el5
  • kernel-debug-devel-0:2.6.18-371.1.2.el5
  • kernel-devel-0:2.6.18-371.1.2.el5
  • kernel-doc-0:2.6.18-371.1.2.el5
  • kernel-headers-0:2.6.18-371.1.2.el5
  • kernel-kdump-0:2.6.18-371.1.2.el5
  • kernel-kdump-devel-0:2.6.18-371.1.2.el5
  • kernel-xen-0:2.6.18-371.1.2.el5
  • kernel-xen-devel-0:2.6.18-371.1.2.el5
refmap via4
debian DSA-3006
gentoo GLSA-201407-03
mlist [oss-security] 20131010 Xen Security Advisory 67 (CVE-2013-4368) - Information leak through outs instruction emulation
suse
  • SUSE-SU-2014:0411
  • SUSE-SU-2014:0446
  • SUSE-SU-2014:0470
  • openSUSE-SU-2013:1636
xf xen-cve20134368-info-disc(87799)
Last major update 06-01-2017 - 21:59
Published 17-10-2013 - 19:55
Last modified 28-08-2017 - 21:33
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