ID CVE-2014-4021
Summary Xen 3.2.x through 4.4.x does not properly clean memory pages recovered from guests, which allows local guest OS users to obtain sensitive information via unspecified vectors.
References
Vulnerable Configurations
  • Xen Xen 3.2.0
    cpe:2.3:o:xen:xen:3.2.0
  • Xen Xen 3.2.1
    cpe:2.3:o:xen:xen:3.2.1
  • Xen Xen 3.2.2
    cpe:2.3:o:xen:xen:3.2.2
  • Xen Xen 3.2.3
    cpe:2.3:o:xen:xen:3.2.3
  • Xen 4.0.0
    cpe:2.3:o:xen:xen:4.0.0
  • Xen 4.0.1
    cpe:2.3:o:xen:xen:4.0.1
  • Xen 4.0.2
    cpe:2.3:o:xen:xen:4.0.2
  • Xen 4.0.3
    cpe:2.3:o:xen:xen:4.0.3
  • Xen 4.0.4
    cpe:2.3:o:xen:xen:4.0.4
  • Xen 4.1.0
    cpe:2.3:o:xen:xen:4.1.0
  • Xen 4.1.1
    cpe:2.3:o:xen:xen:4.1.1
  • Xen 4.1.2
    cpe:2.3:o:xen:xen:4.1.2
  • Xen 4.1.3
    cpe:2.3:o:xen:xen:4.1.3
  • Xen 4.1.4
    cpe:2.3:o:xen:xen:4.1.4
  • Xen 4.1.5
    cpe:2.3:o:xen:xen:4.1.5
  • Xen 4.1.6.1
    cpe:2.3:o:xen:xen:4.1.6.1
  • Xen 4.2.0
    cpe:2.3:o:xen:xen:4.2.0
  • Xen 4.2.1
    cpe:2.3:o:xen:xen:4.2.1
  • Xen 4.2.2
    cpe:2.3:o:xen:xen:4.2.2
  • Xen 4.2.3
    cpe:2.3:o:xen:xen:4.2.3
  • Xen Xen 4.3.0
    cpe:2.3:o:xen:xen:4.3.0
  • Xen 4.3.1
    cpe:2.3:o:xen:xen:4.3.1
  • Xen 4.4.0
    cpe:2.3:o:xen:xen:4.4.0
  • Xen 4.4.0 release candidate 1
    cpe:2.3:o:xen:xen:4.4.0:rc1
CVSS
Base: 2.7 (as of 01-12-2015 - 10:27)
Impact:
Exploitability:
CWE CWE-119
CAPEC
  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
  • Overflow Binary Resource File
    An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the attacker access to the execution stack and execute arbitrary code in the target process. This attack pattern is a variant of standard buffer overflow attacks using an unexpected vector (binary files) to wrap its attack and open up a new attack vector. The attacker is required to either directly serve the binary content to the victim, or place it in a locale like a MP3 sharing application, for the victim to download. The attacker then is notified upon the download or otherwise locates the vulnerability opened up by the buffer overflow.
  • Buffer Overflow via Symbolic Links
    This type of attack leverages the use of symbolic links to cause buffer overflows. An attacker can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
  • Overflow Variables and Tags
    This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The attacker crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
  • Buffer Overflow via Parameter Expansion
    In this attack, the target software is given input that the attacker knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
  • Buffer Overflow in an API Call
    This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An attacker who has access to an API may try to embed malicious code in the API function call and exploit a buffer overflow vulnerability in the function's implementation. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
  • Buffer Overflow in Local Command-Line Utilities
    This attack targets command-line utilities available in a number of shells. An attacker can leverage a vulnerability found in a command-line utility to escalate privilege to root.
Access
VectorComplexityAuthentication
ADJACENT_NETWORK LOW SINGLE_INSTANCE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
nessus via4
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2014-7722.NASL
    description Hypervisor heap contents leaked to guest, with extra patch to avoid regression 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 76370
    published 2014-07-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=76370
    title Fedora 20 : xen-4.3.2-6.fc20 (2014-7722)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2014-7734.NASL
    description Hypervisor heap contents leaked to guest, with extra patch to avoid regression 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 76371
    published 2014-07-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=76371
    title Fedora 19 : xen-4.2.4-6.fc19 (2014-7734)
  • NASL family Misc.
    NASL id CITRIX_XENSERVER_CTX140984.NASL
    description The remote host is running a version of Citrix XenServer that is affected by multiple vulnerabilities : - An information disclosure exists due to the Xen hypervisor's failure to properly clean memory pages. (CVE-2014-4021) - An unspecified vulnerability exists due to a buffer overflow in the HVM graphics console. (CVE-2014-4947) - XenServer is affected by an unspecified denial of service and information disclosure vulnerability. (CVE-2014-4948)
    last seen 2019-02-21
    modified 2018-07-09
    plugin id 76771
    published 2014-07-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=76771
    title Citrix XenServer Multiple Vulnerabilities (CTX140984)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2014-0926.NASL
    description From Red Hat Security Advisory 2014:0926 : Updated kernel packages that fix two security issues and several bugs 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 NULL pointer dereference flaw was found in the rds_iw_laddr_check() function in the Linux kernel's implementation of Reliable Datagram Sockets (RDS). A local, unprivileged user could use this flaw to crash the system. (CVE-2014-2678, Moderate) * It was found that the Xen hypervisor implementation did not properly clean memory pages previously allocated by the hypervisor. A privileged guest user could potentially use this flaw to read data relating to other guests or the hypervisor itself. (CVE-2014-4021, Moderate) Red Hat would like to thank the Xen project for reporting CVE-2014-4021. Upstream acknowledges Jan Beulich as the original reporter. This update also fixes the following bugs : * A bug in the journaling block device (jbd and jbd2) code could, under certain circumstances, trigger a BUG_ON() assertion and result in a kernel oops. This happened when an application performed an extensive number of commits to the journal of the ext3 file system and there was no currently active transaction while synchronizing the file's in-core state. This problem has been resolved by correcting respective test conditions in the jbd and jbd2 code. (BZ#1097528) * After a statically defined gateway became unreachable and its corresponding neighbor entry entered a FAILED state, the gateway stayed in the FAILED state even after it became reachable again. As a consequence, traffic was not routed through that gateway. This update allows probing such a gateway automatically so that the traffic can be routed through this gateway again once it becomes reachable. (BZ#1106354) * Due to an incorrect condition check in the IPv6 code, the ipv6 driver was unable to correctly assemble incoming packet fragments, which resulted in a high IPv6 packet loss rate. This update fixes the said check for a fragment overlap and ensures that incoming IPv6 packet fragments are now processed as expected. (BZ#1107932) * Recent changes in the d_splice_alias() function introduced a bug that allowed d_splice_alias() to return a dentry from a different directory than the directory being looked up. As a consequence in cluster environment, a kernel panic could be triggered when a directory was being removed while a concurrent cross-directory operation was performed on this directory on another cluster node. This update avoids the kernel panic in this situation by correcting the search logic in the d_splice_alias() function so that the function can no longer return a dentry from an incorrect directory. (BZ#1109720) * The NFSv4 server did not handle multiple OPEN operations to the same file separately, which could cause the NFSv4 client to repeatedly send CLOSE requests with the same state ID, even though the NFS server rejected the request with an NFS4ERR_OLD_STATEID (10024) error code. This update ensures that the NFSv4 client no longer re-sends the same CLOSE request after receiving NFS4ERR_OLD_STATEID. (BZ#1113468) 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 2016-04-27
    plugin id 76856
    published 2014-07-27
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=76856
    title Oracle Linux 5 : kernel (ELSA-2014-0926)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_11_XEN-201409-141002.NASL
    description The SUSE Linux Enterprise 11 Service Pack 3 Xen package was updated to fix various bugs and security issues. The following security issues have been fixed : - XSA-108: CVE-2014-7188: Improper MSR range used for x2APIC emulation. (bnc#897657) - XSA-106: CVE-2014-7156: Missing privilege level checks in x86 emulation of software interrupts. (bnc#895802) - XSA-105: CVE-2014-7155: Missing privilege level checks in x86 HLT, LGDT, LIDT, and LMSW emulation. (bnc#895799) - XSA-104: CVE-2014-7154: Race condition in HVMOP_track_dirty_vram. (bnc#895798) - XSA-100: CVE-2014-4021: Hypervisor heap contents leaked to guests. (bnc#880751) - XSA-96: CVE-2014-3967 / CVE-2014-3968: Vulnerabilities in HVM MSI injection. (bnc#878841) - XSA-89: CVE-2014-2599: HVMOP_set_mem_access is not preemptible. (bnc#867910) - XSA-65: CVE-2013-4344: qemu SCSI REPORT LUNS buffer overflow. (bnc#842006) - qemu: zaurus: buffer overrun on invalid state load (bnc#864801) The following non-security issues have been fixed:. (CVE-2013-4540) - xend: Fix netif convertToDeviceNumber for running domains. (bnc#891539) - Installing SLES12 as a VM on SLES11 SP3 fails because of btrfs in the VM. (bnc#882092) - XEN kernel panic do_device_not_available(). (bnc#881900) - Boot Failure with xen kernel in UEFI mode with error 'No memory for trampoline'. (bnc#833483) - SLES 11 SP3 vm-install should get RHEL 7 support when released. (bnc#862608) - SLES 11 SP3 XEN kiso version cause softlockup on 8 blades npar(480 cpu). (bnc#858178) - Local attach support for PHY backends using scripts local_attach_support_for_phy.patch. (bnc#865682) - Improve multipath support for npiv devices block-npiv (bnc#798770)
    last seen 2019-02-21
    modified 2014-10-23
    plugin id 78652
    published 2014-10-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=78652
    title SuSE 11.3 Security Update : Xen (SAT Patch Number 9828)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2014-1691-1.NASL
    description Xen has been updated to fix six security issues : - Guest effectable page reference leak in MMU_MACHPHYS_UPDATE handling (CVE-2014-9030). - Insufficient bounding of 'REP MOVS' to MMIO emulated inside the hypervisor (CVE-2014-8867). - Missing privilege level checks in x86 emulation of far branches (CVE-2014-8595). - Guest user mode triggerable VM exits not handled by hypervisor (bnc#903850). - Missing privilege level checks in x86 HLT, LGDT, LIDT, and LMSW emulation (CVE-2014-7155). - Hypervisor heap contents leaked to guests (CVE-2014-4021). 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 2018-11-10
    plugin id 83651
    published 2015-05-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83651
    title SUSE SLES10 Security Update : Xen (SUSE-SU-2014:1691-1)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2014-0926.NASL
    description Updated kernel packages that fix two security issues and several bugs 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 NULL pointer dereference flaw was found in the rds_iw_laddr_check() function in the Linux kernel's implementation of Reliable Datagram Sockets (RDS). A local, unprivileged user could use this flaw to crash the system. (CVE-2014-2678, Moderate) * It was found that the Xen hypervisor implementation did not properly clean memory pages previously allocated by the hypervisor. A privileged guest user could potentially use this flaw to read data relating to other guests or the hypervisor itself. (CVE-2014-4021, Moderate) Red Hat would like to thank the Xen project for reporting CVE-2014-4021. Upstream acknowledges Jan Beulich as the original reporter. This update also fixes the following bugs : * A bug in the journaling block device (jbd and jbd2) code could, under certain circumstances, trigger a BUG_ON() assertion and result in a kernel oops. This happened when an application performed an extensive number of commits to the journal of the ext3 file system and there was no currently active transaction while synchronizing the file's in-core state. This problem has been resolved by correcting respective test conditions in the jbd and jbd2 code. (BZ#1097528) * After a statically defined gateway became unreachable and its corresponding neighbor entry entered a FAILED state, the gateway stayed in the FAILED state even after it became reachable again. As a consequence, traffic was not routed through that gateway. This update allows probing such a gateway automatically so that the traffic can be routed through this gateway again once it becomes reachable. (BZ#1106354) * Due to an incorrect condition check in the IPv6 code, the ipv6 driver was unable to correctly assemble incoming packet fragments, which resulted in a high IPv6 packet loss rate. This update fixes the said check for a fragment overlap and ensures that incoming IPv6 packet fragments are now processed as expected. (BZ#1107932) * Recent changes in the d_splice_alias() function introduced a bug that allowed d_splice_alias() to return a dentry from a different directory than the directory being looked up. As a consequence in cluster environment, a kernel panic could be triggered when a directory was being removed while a concurrent cross-directory operation was performed on this directory on another cluster node. This update avoids the kernel panic in this situation by correcting the search logic in the d_splice_alias() function so that the function can no longer return a dentry from an incorrect directory. (BZ#1109720) * The NFSv4 server did not handle multiple OPEN operations to the same file separately, which could cause the NFSv4 client to repeatedly send CLOSE requests with the same state ID, even though the NFS server rejected the request with an NFS4ERR_OLD_STATEID (10024) error code. This update ensures that the NFSv4 client no longer re-sends the same CLOSE request after receiving NFS4ERR_OLD_STATEID. (BZ#1113468) 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 76779
    published 2014-07-25
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=76779
    title CentOS 5 : kernel (CESA-2014:0926)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20140723_KERNEL_ON_SL5_X.NASL
    description - A NULL pointer dereference flaw was found in the rds_iw_laddr_check() function in the Linux kernel's implementation of Reliable Datagram Sockets (RDS). A local, unprivileged user could use this flaw to crash the system. (CVE-2014-2678, Moderate) - It was found that the Xen hypervisor implementation did not properly clean memory pages previously allocated by the hypervisor. A privileged guest user could potentially use this flaw to read data relating to other guests or the hypervisor itself. (CVE-2014-4021, Moderate) This update also fixes the following bugs : - A bug in the journaling block device (jbd and jbd2) code could, under certain circumstances, trigger a BUG_ON() assertion and result in a kernel oops. This happened when an application performed an extensive number of commits to the journal of the ext3 file system and there was no currently active transaction while synchronizing the file's in-core state. This problem has been resolved by correcting respective test conditions in the jbd and jbd2 code. - After a statically defined gateway became unreachable and its corresponding neighbor entry entered a FAILED state, the gateway stayed in the FAILED state even after it became reachable again. As a consequence, traffic was not routed through that gateway. This update allows probing such a gateway automatically so that the traffic can be routed through this gateway again once it becomes reachable. - Due to an incorrect condition check in the IPv6 code, the ipv6 driver was unable to correctly assemble incoming packet fragments, which resulted in a high IPv6 packet loss rate. This update fixes the said check for a fragment overlap and ensures that incoming IPv6 packet fragments are now processed as expected. - Recent changes in the d_splice_alias() function introduced a bug that allowed d_splice_alias() to return a dentry from a different directory than the directory being looked up. As a consequence in cluster environment, a kernel panic could be triggered when a directory was being removed while a concurrent cross-directory operation was performed on this directory on another cluster node. This update avoids the kernel panic in this situation by correcting the search logic in the d_splice_alias() function so that the function can no longer return a dentry from an incorrect directory. - The NFSv4 server did not handle multiple OPEN operations to the same file separately, which could cause the NFSv4 client to repeatedly send CLOSE requests with the same state ID, even though the NFS server rejected the request with an NFS4ERR_OLD_STATEID (10024) error code. This update ensures that the NFSv4 client no longer re-sends the same CLOSE request after receiving NFS4ERR_OLD_STATEID. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-12-28
    plugin id 76782
    published 2014-07-25
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=76782
    title Scientific Linux Security Update : kernel on SL5.x i386/x86_64
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2014-1710-1.NASL
    description xen was updated to fix 14 security issues : - Guest effectable page reference leak in MMU_MACHPHYS_UPDATE handling (CVE-2014-9030). - Insufficient bounding of 'REP MOVS' to MMIO emulated inside the hypervisor (CVE-2014-8867). - Missing privilege level checks in x86 HLT, LGDT, LIDT, and LMSW emulation (CVE-2014-7155). - Hypervisor heap contents leaked to guests (CVE-2014-4021). - Missing privilege level checks in x86 emulation of far branches (CVE-2014-8595). - Insufficient restrictions on certain MMU update hypercalls (CVE-2014-8594). - Intel VT-d Interrupt Remapping engines can be evaded by native NMI interrupts (CVE-2013-3495). - Missing privilege level checks in x86 emulation of software interrupts (CVE-2014-7156). - Race condition in HVMOP_track_dirty_vram (CVE-2014-7154). - Improper MSR range used for x2APIC emulation (CVE-2014-7188). - HVMOP_set_mem_type allows invalid P2M entries to be created (CVE-2014-3124). - HVMOP_set_mem_access is not preemptible (CVE-2014-2599). - Excessive checking in compatibility mode hypercall argument translation (CVE-2014-8866). - Guest user mode triggerable VM exits not handled by hypervisor (bnc#903850). The update package also includes non-security fixes. See advisory for details. 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 2018-11-10
    plugin id 83654
    published 2015-05-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83654
    title SUSE SLES11 Security Update : xen (SUSE-SU-2014:1710-1)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2014-579.NASL
    description XEN was updated to fix various bugs and security issues. Security issues fixed : - bnc#897657 - CVE-2014-7188: XSA-108 Improper MSR range used for x2APIC emulation - bnc#895802 - CVE-2014-7156: XSA-106: Missing privilege level checks in x86 emulation of software interrupts - bnc#895799 - CVE-2014-7155: XSA-105: Missing privilege level checks in x86 HLT, LGDT, LIDT, and LMSW emulation - bnc#895798 - CVE-2014-7154: XSA-104: Race condition in HVMOP_track_dirty_vram - bnc#864801 - CVE-2013-4540: qemu: zaurus: buffer overrun on invalid state load - bnc#880751 - CVE-2014-4021: XSA-100: Hypervisor heap contents leaked to guests - bnc#878841 - CVE-2014-3967,CVE-2014-3968: XSA-96: Vulnerabilities in HVM MSI injection - bnc#867910 - CVE-2014-2599: XSA-89: HVMOP_set_mem_access is not preemptible - bnc#842006 - CVE-2013-4344: XSA-65: xen: qemu SCSI REPORT LUNS buffer overflow Other bugs fixed : - bnc#896023 - Adjust xentop column layout - bnc#891539 - xend: fix netif convertToDeviceNumber for running domains - bnc#820873 - The 'long' option doesn't work with 'xl list' - bnc#881900 - XEN kernel panic do_device_not_available() - bnc#833483 - Boot Failure with xen kernel in UEFI mode with error 'No memory for trampoline' - bnc#862608 - SLES 11 SP3 vm-install should get RHEL 7 support when released - bnc#858178 - [HP HPS Bug]: SLES11sp3 XEN kiso version cause softlockup on 8 blades npar(480 cpu) - bnc#865682 - Local attach support for PHY backends using scripts - bnc#798770 - Improve multipath support for npiv devices
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 78116
    published 2014-10-10
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=78116
    title openSUSE Security Update : xen (openSUSE-SU-2014:1279-1)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2015-0004.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2015-0004 for details.
    last seen 2019-02-21
    modified 2018-07-24
    plugin id 80928
    published 2015-01-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=80928
    title OracleVM 3.3 : xen (OVMSA-2015-0004)
  • 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 Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2014-0926.NASL
    description Updated kernel packages that fix two security issues and several bugs 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 NULL pointer dereference flaw was found in the rds_iw_laddr_check() function in the Linux kernel's implementation of Reliable Datagram Sockets (RDS). A local, unprivileged user could use this flaw to crash the system. (CVE-2014-2678, Moderate) * It was found that the Xen hypervisor implementation did not properly clean memory pages previously allocated by the hypervisor. A privileged guest user could potentially use this flaw to read data relating to other guests or the hypervisor itself. (CVE-2014-4021, Moderate) Red Hat would like to thank the Xen project for reporting CVE-2014-4021. Upstream acknowledges Jan Beulich as the original reporter. This update also fixes the following bugs : * A bug in the journaling block device (jbd and jbd2) code could, under certain circumstances, trigger a BUG_ON() assertion and result in a kernel oops. This happened when an application performed an extensive number of commits to the journal of the ext3 file system and there was no currently active transaction while synchronizing the file's in-core state. This problem has been resolved by correcting respective test conditions in the jbd and jbd2 code. (BZ#1097528) * After a statically defined gateway became unreachable and its corresponding neighbor entry entered a FAILED state, the gateway stayed in the FAILED state even after it became reachable again. As a consequence, traffic was not routed through that gateway. This update allows probing such a gateway automatically so that the traffic can be routed through this gateway again once it becomes reachable. (BZ#1106354) * Due to an incorrect condition check in the IPv6 code, the ipv6 driver was unable to correctly assemble incoming packet fragments, which resulted in a high IPv6 packet loss rate. This update fixes the said check for a fragment overlap and ensures that incoming IPv6 packet fragments are now processed as expected. (BZ#1107932) * Recent changes in the d_splice_alias() function introduced a bug that allowed d_splice_alias() to return a dentry from a different directory than the directory being looked up. As a consequence in cluster environment, a kernel panic could be triggered when a directory was being removed while a concurrent cross-directory operation was performed on this directory on another cluster node. This update avoids the kernel panic in this situation by correcting the search logic in the d_splice_alias() function so that the function can no longer return a dentry from an incorrect directory. (BZ#1109720) * The NFSv4 server did not handle multiple OPEN operations to the same file separately, which could cause the NFSv4 client to repeatedly send CLOSE requests with the same state ID, even though the NFS server rejected the request with an NFS4ERR_OLD_STATEID (10024) error code. This update ensures that the NFSv4 client no longer re-sends the same CLOSE request after receiving NFS4ERR_OLD_STATEID. (BZ#1113468) 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 76751
    published 2014-07-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=76751
    title RHEL 5 : kernel (RHSA-2014:0926)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2014-580.NASL
    description XEN was updated to fix security issues and bugs. Security issues fixed : - bnc#897657 - CVE-2014-7188: XSA-108 Improper MSR range used for x2APIC emulation - bnc#895802 - CVE-2014-7156: XSA-106: Missing privilege level checks in x86 emulation of software interrupts - bnc#895799 - CVE-2014-7155: XSA-105: Missing privilege level checks in x86 HLT, LGDT, LIDT, and LMSW emulation - bnc#895798 - CVE-2014-7154: XSA-104: Race condition in HVMOP_track_dirty_vram - bnc#864801 - CVE-2013-4540: qemu: zaurus: buffer overrun on invalid state load - bnc#875668 - CVE-2014-3124: XSA-92: HVMOP_set_mem_type allows invalid P2M entries to be created - bnc#878841 - CVE-2014-3967, CVE-2014-3968: XSA-96: Xen: Vulnerabilities in HVM MSI injection - bnc#880751 - CVE-2014-4021: XSA-100: Hypervisor heap contents leaked to guests - bnc#842006 - CVE-2013-4344: XSA-65: xen: qemu SCSI REPORT LUNS buffer overflow Other bugs fixed : - bnc#896023 - Adjust xentop column layout - bnc#820873 - The 'long' option doesn't work with 'xl list' - bnc#882127 - Xen kernel panics on booting SLES12 Beta 8 - bnc#865682 - Local attach support for PHY backends using scripts - bnc#798770 - Improve multipath support for npiv devices
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 78117
    published 2014-10-10
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=78117
    title openSUSE Security Update : xen (openSUSE-SU-2014:1281-1)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2014-1732-1.NASL
    description xen was updated to fix 10 security issues : - Guest effectable page reference leak in MMU_MACHPHYS_UPDATE handling (CVE-2014-9030). - Insufficient bounding of 'REP MOVS' to MMIO emulated inside the hypervisor (CVE-2014-8867). - Missing privilege level checks in x86 emulation of far branches (CVE-2014-8595). - Missing privilege level checks in x86 HLT, LGDT, LIDT, and LMSW emulation (CVE-2014-7155). - Hypervisor heap contents leaked to guests (CVE-2014-4021). - Missing privilege level checks in x86 emulation of far branches (CVE-2014-8595). - Insufficient restrictions on certain MMU update hypercalls (CVE-2014-8594). - Intel VT-d Interrupt Remapping engines can be evaded by native NMI interrupts (CVE-2013-3495). - Missing privilege level checks in x86 emulation of software interrupts (CVE-2014-7156). - Race condition in HVMOP_track_dirty_vram (CVE-2014-7154). 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 2018-11-10
    plugin id 83659
    published 2015-05-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83659
    title SUSE SLES11 Security Update : xen (SUSE-SU-2014:1732-1)
redhat via4
advisories
bugzilla
id 1103646
title CVE-2014-4021 xen: Hypervisor heap contents leaked to guests (xsa-100)
oval
AND
  • comment Red Hat Enterprise Linux 5 is installed
    oval oval:com.redhat.rhba:tst:20070331001
  • OR
    • AND
      • comment kernel is earlier than 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926002
      • comment kernel is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314003
    • AND
      • comment kernel-PAE is earlier than 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926020
      • 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 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926022
      • 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 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926012
      • 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 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926014
      • 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 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926008
      • comment kernel-devel is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314007
    • AND
      • comment kernel-doc is earlier than 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926024
      • comment kernel-doc is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314025
    • AND
      • comment kernel-headers is earlier than 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926004
      • comment kernel-headers is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314005
    • AND
      • comment kernel-kdump is earlier than 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926018
      • 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 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926016
      • 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 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926006
      • 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 0:2.6.18-371.11.1.el5
        oval oval:com.redhat.rhsa:tst:20140926010
      • comment kernel-xen-devel is signed with Red Hat redhatrelease key
        oval oval:com.redhat.rhba:tst:20080314013
rhsa
id RHSA-2014:0926
released 2014-07-23
severity Moderate
title RHSA-2014:0926: kernel security and bug fix update (Moderate)
rpms
  • kernel-0:2.6.18-371.11.1.el5
  • kernel-PAE-0:2.6.18-371.11.1.el5
  • kernel-PAE-devel-0:2.6.18-371.11.1.el5
  • kernel-debug-0:2.6.18-371.11.1.el5
  • kernel-debug-devel-0:2.6.18-371.11.1.el5
  • kernel-devel-0:2.6.18-371.11.1.el5
  • kernel-doc-0:2.6.18-371.11.1.el5
  • kernel-headers-0:2.6.18-371.11.1.el5
  • kernel-kdump-0:2.6.18-371.11.1.el5
  • kernel-kdump-devel-0:2.6.18-371.11.1.el5
  • kernel-xen-0:2.6.18-371.11.1.el5
  • kernel-xen-devel-0:2.6.18-371.11.1.el5
refmap via4
bid 68070
confirm
debian DSA-3006
fedora
  • FEDORA-2014-7722
  • FEDORA-2014-7734
gentoo GLSA-201407-03
sectrack 1030442
secunia
  • 59208
  • 60027
  • 60130
  • 60471
suse
  • openSUSE-SU-2014:1279
  • openSUSE-SU-2014:1281
Last major update 06-01-2017 - 22:00
Published 18-06-2014 - 15:55
Last modified 30-10-2018 - 12:26
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