ID CVE-2017-15592
Summary An issue was discovered in Xen through 4.9.x allowing x86 HVM guest OS users to cause a denial of service (hypervisor crash) or possibly gain privileges because self-linear shadow mappings are mishandled for translated guests.
References
Vulnerable Configurations
  • Xen 4.9.0
    cpe:2.3:o:xen:xen:4.9.0
CVSS
Base: 7.2
Impact:
Exploitability:
CWE CWE-264
CAPEC
  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
nessus via4
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2017-0176.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - BUILDINFO: OVMF commit=173bf5c847e3ca8b42c11796ce048d8e2e916ff8 - BUILDINFO: xen commit=b90f0a4fa66aea67e743c393ba307612a2fec379 - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - p2m: Check return value of p2m_set_entry when decreasing reservation (George Dunlap) [Orabug: 27216264] (CVE-2017-17045) - p2m: Always check to see if removing a p2m entry actually worked (George Dunlap) [Orabug: 27216264] (CVE-2017-17045) - x86/pod: prevent infinite loop when shattering large pages (Julien Grall) [Orabug: 27216261] (CVE-2017-17044) - xen/physmap: Do not permit a guest to populate PoD pages for itself (Elena Ufimtseva) [Orabug: 27216261] (CVE-2017-17044) - xend/pxm: Include pxm in XenStore when hotplugging PCI devices (Konrad Rzeszutek Wilk) [Orabug: 27206706] - BUILDINFO: OVMF commit=173bf5c847e3ca8b42c11796ce048d8e2e916ff8 - BUILDINFO: xen commit=2f4972e50ebd2a470b19bfdb1fc6ce91e77614e0 - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - vNUMA: assign vcpus to nodes by interleaving (Elena Ufimtseva) - BUILDINFO: OVMF commit=173bf5c847e3ca8b42c11796ce048d8e2e916ff8 - BUILDINFO: xen commit=c9c2df2dc87e18c9dcf584aedf859ab50b62883a - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - vNUMA: disable vNUMA if fail to find vcpus for pinning (Elena Ufimtseva) [Orabug: 27091931] - BUILDINFO: OVMF commit=173bf5c847e3ca8b42c11796ce048d8e2e916ff8 - BUILDINFO: xen commit=fe4d54f49f8cf07f9e9d8077b7c85d287fb5c90c - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - x86/shadow: correct SH_LINEAR mapping detection in sh_guess_wrmap (Andrew Cooper) [Orabug: 27148184] (CVE-2017-15592) (CVE-2017-15592) - x86: don't wrongly trigger linear page table assertion (Jan Beulich) [Orabug: 27148179] (CVE-2017-15595) - BUILDINFO: OVMF commit=173bf5c847e3ca8b42c11796ce048d8e2e916ff8 - BUILDINFO: xen commit=b67a2d04c74002cceabfa76612a27fd1cf3f2b29 - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - vNUMA: fix cpus assignment in manual vNUMA mode. (Elena Ufimtseva)
    last seen 2019-02-21
    modified 2018-11-19
    plugin id 105249
    published 2017-12-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105249
    title OracleVM 3.4 : xen (OVMSA-2017-0176)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-3212-1.NASL
    description This update for xen fixes several issues. These security issues were fixed : - bsc#1068187: Failure to recognize errors in the Populate on Demand (PoD) code allowed for DoS (XSA-246) - bsc#1068191: Missing p2m error checking in PoD code allowed unprivileged guests to retain a writable mapping of freed memory leading to information leaks, privilege escalation or DoS (XSA-247). - CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063123) - CVE-2017-15597: A grant copy operation being done on a grant of a dying domain allowed a malicious guest administrator to corrupt hypervisor memory, allowing for DoS or potentially privilege escalation and information leaks (bsc#1061075). - CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking (bsc#1061081). - CVE-2017-15592: x86 HVM guest OS users were able to cause a DoS (hypervisor crash) or possibly gain privileges because self-linear shadow mappings were mishandled for translated guests (bsc#1061086). 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 2018-11-30
    plugin id 105033
    published 2017-12-06
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105033
    title SUSE SLES11 Security Update : xen (SUSE-SU-2017:3212-1)
  • NASL family Misc.
    NASL id CITRIX_XENSERVER_CTX230138.NASL
    description The version of Citrix XenServer installed on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities as noted in the CTX230138 advisory.
    last seen 2019-02-21
    modified 2018-11-29
    plugin id 105083
    published 2017-12-07
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105083
    title Citrix XenServer Multiple Vulnerabilities (CTX230138)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2018-0005.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0005 for details.
    last seen 2019-02-21
    modified 2018-11-19
    plugin id 105717
    published 2018-01-10
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105717
    title OracleVM 3.4 : xen (OVMSA-2018-0005) (Meltdown) (Spectre)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2018-0248.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0248 for details.
    last seen 2019-02-21
    modified 2018-11-19
    plugin id 111992
    published 2018-08-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=111992
    title OracleVM 3.4 : xen (OVMSA-2018-0248) (Bunker Buster) (Foreshadow) (Meltdown) (POODLE) (Spectre)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DLA-1181.NASL
    description Multiple vulnerabilities have been discovered in the Xen hypervisor : CVE-2017-15588 Jann Horn discovered a race condition that can cause a stale TLB entry which might result in privilege escalation, denial of service or information leak. CVE-2017-15589 Roger Pau Monné discovered a hypervisor stack leak in the x86 I/O intercept code, resulting in information leaks. CVE-2017-15592 Andrew Cooper discovered that incorrect handling of self-linear shadow mappings for translated guests might result in denial of service or privilege escalation. CVE-2017-15593 Jan Beulich discovered that page type reference counts are mishandled which may result in denial of service. CVE-2017-15595 Jann Horn discovered that crafted page-table stacking might result in denial of service, privilege escalation or information leaks. For Debian 7 'Wheezy', these problems have been fixed in version 4.1.6.lts1-10. We recommend that you upgrade your xen packages. NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA 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 2018-07-06
    plugin id 104708
    published 2017-11-21
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104708
    title Debian DLA-1181-1 : xen security update
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2017-0177.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - Due to the history performance reason, we decide to disable PoD feature in old OVM product.XSA-246,XSA-247 [bug 27121016] (CVE-2017-17044, CVE-2017-17045) - From 2a99aa99fc84a45f505f84802af56b006d14c52e Mon Sep 17 00:00:00 2001 From: Andrew Cooper Date: Fri, 19 Aug 2016 15:08:10 +0100 Subject: [PATCH] xen/physmap: Do not permit a guest to populate PoD pages for itself PoD is supposed to be entirely transparent to guest, but this interface has been left exposed for a long time. The use of PoD requires careful co-ordination by the toolstack with the XENMEM_[get,set]_pod_target hypercalls, and xenstore ballooning target. The best a guest can do without toolstack cooperation crash. Furthermore, there are combinations of features (e.g. c/s c63868ff 'libxl: disallow PCI device assignment for HVM guest when PoD is enabled') which a toolstack might wish to explicitly prohibit (in this case, because the two simply don't function in combination). In such cases, the guest mustn't be able to subvert the configuration chosen by the toolstack. Conflict: xen/common/memory.c - x86/shadow: correct SH_LINEAR mapping detection in sh_guess_wrmap The fix for XSA-243 / CVE-2017-15592 (c/s bf2b4eadcf379) introduced a change in behaviour for sh_guest_wrmap, where it had to cope with no shadow linear mapping being present. As the name suggests, guest_vtable is a mapping of the guests pagetable, not Xen's pagetable, meaning that it isn't the pagetable we need to check for the shadow linear slot in. The practical upshot is that a shadow HVM vcpu which switches into 4-level paging mode, with an L4 pagetable that contains a mapping which aliases Xen's SH_LINEAR_PT_VIRT_START will fool the safety check for whether a SHADOW_LINEAR mapping is present. As the check passes (when it should have failed), Xen subsequently falls over the missing mapping with a pagefault such as: (XEN) Pagetable walk from ffff8140a0503880: (XEN) L4[0x102] = 000000046c218063 ffffffffffffffff (XEN) L3[0x102] = 000000046c218063 ffffffffffffffff (XEN) L2[0x102] = 000000046c218063 ffffffffffffffff (XEN) L1[0x103] = 0000000000000000 ffffffffffffffff This is part of XSA-243. (CVE-2017-15592)
    last seen 2019-02-21
    modified 2018-07-25
    plugin id 105250
    published 2017-12-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105250
    title OracleVM 3.3 : xen (OVMSA-2017-0177)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2017-0178.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - From 2a99aa99fc84a45f505f84802af56b006d14c52e Mon Sep 17 00:00:00 2001 From: Andrew Cooper Date: Fri, 19 Aug 2016 15:08:10 +0100 Subject: [PATCH] xen/physmap: Do not permit a guest to populate PoD pages for itself PoD is supposed to be entirely transparent to guest, but this interface has been left exposed for a long time. The use of PoD requires careful co-ordination by the toolstack with the XENMEM_[get,set]_pod_target hypercalls, and xenstore ballooning target. The best a guest can do without toolstack cooperation crash. Furthermore, there are combinations of features (e.g. c/s c63868ff 'libxl: disallow PCI device assignment for HVM guest when PoD is enabled') which a toolstack might wish to explicitly prohibit (in this case, because the two simply don't function in combination). In such cases, the guest mustn't be able to subvert the configuration chosen by the toolstack. Conflict: xen/common/memory.c - Due to the history performance reason, we decide to disable PoD feature in old OVM product. Please don't set maxmem>memory XSA-246,XSA-247 [bug 27120669] (CVE-2017-17044, CVE-2017-17045) - x86/shadow: correct SH_LINEAR mapping detection in sh_guess_wrmap The fix for XSA-243 / CVE-2017-15592 (c/s bf2b4eadcf379) introduced a change in behaviour for sh_guest_wrmap, where it had to cope with no shadow linear mapping being present. As the name suggests, guest_vtable is a mapping of the guests pagetable, not Xen's pagetable, meaning that it isn't the pagetable we need to check for the shadow linear slot in. The practical upshot is that a shadow HVM vcpu which switches into 4-level paging mode, with an L4 pagetable that contains a mapping which aliases Xen's SH_LINEAR_PT_VIRT_START will fool the safety check for whether a SHADOW_LINEAR mapping is present. As the check passes (when it should have failed), Xen subsequently falls over the missing mapping with a pagefault such as: (XEN) Pagetable walk from ffff8140a0503880: (XEN) L4[0x102] = 000000046c218063 ffffffffffffffff (XEN) L3[0x102] = 000000046c218063 ffffffffffffffff (XEN) L2[0x102] = 000000046c218063 ffffffffffffffff (XEN) L1[0x103] = 0000000000000000 ffffffffffffffff This is part of XSA-243. (CVE-2017-15592) - dpci: Fix a race during unbinding of MSI interrupt The check of hvm_irq_dpci->mapping and read of flags are not protected in same critical area, so the unbind of MSI interrupt may intercepts between them. Like below scene: CPU0 CPU1 ---- ---- hvm_do_IRQ_dpci !test_bit(mirq, dpci->mapping)) return 0 spin_lock(&d->event_lock) hvm_irq_dpci->mirq[machine_gsi].flags = 0 clear_bit(machine_gsi, hvm_irq_dpci->mapping) spin_unlock(&d->event_lock) hvm_dirq_assist spin_lock(&d->event_lock) if ( pt_irq_need_timer(hvm_irq_dpci->mirq[pirq].flags)) set_timer spin_unlock(&d->event_lock) Then set_timer is mistakenly called which access uninitialized timer struct. Then page fault happen and a backtrace like below: (XEN) Xen call trace: (XEN) [] set_timer+0x92/0x170 (XEN) [] hvm_dirq_assist+0x1c3/0x1e0 (XEN) [] do_tasklet_work_percpu+0x7f/0x120 (XEN) [] __do_softirq+0x65/0x90 (XEN) [] process_softirqs+0x6/0x10 (XEN) (XEN) Pagetable walk from 0000000000000008: (XEN) L4[0x000] = 0000002104cc1067 0000000000289430 (XEN) L3[0x000] = 000000212ecd8067 00000000002b3447 (XEN) L2[0x000] = 0000000000000000 ffffffffffffffff (XEN) (XEN) **************************************** (XEN) Panic on CPU 41: (XEN) FATAL PAGE FAULT (XEN) [error_code=0002] (XEN) Faulting linear address: 0000000000000008 (XEN) **************************************** This issue is OVM3.2 only as OVM3.3 or above already has similar fix in pt_pirq_iterate
    last seen 2019-02-21
    modified 2018-07-25
    plugin id 105251
    published 2017-12-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105251
    title OracleVM 3.2 : xen (OVMSA-2017-0178)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2017-D4709B0D8B.NASL
    description xen: various flaws (#1501391) multiple MSI mapping issues on x86 [XSA-237] DMOP map/unmap missing argument checks [XSA-238] hypervisor stack leak in x86 I/O intercept code [XSA-239] Unlimited recursion in linear pagetable de-typing [XSA-240] Stale TLB entry due to page type release race [XSA-241] page type reference leak on x86 [XSA-242] x86: Incorrect handling of self-linear shadow mappings with translated guests [XSA-243] x86: Incorrect handling of IST settings during CPU hotplug [XSA-244] ---- ARM: Some memory not scrubbed at boot [XSA-245] Qemu: vga: reachable assert failure during during display update [CVE-2017-13673] (#1486591) Qemu: vga: OOB read access during display update [CVE-2017-13672] (#1486562) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-02-02
    plugin id 104347
    published 2017-11-02
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104347
    title Fedora 25 : xen (2017-d4709b0d8b)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2017-2500A024EF.NASL
    description fix an issue in patch for [XSA-240, CVE-2017-15595] that might be a security issue fix for [XSA-243, CVE-2017-15592] could cause hypervisor crash (DOS) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-02-01
    plugin id 104823
    published 2017-11-29
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104823
    title Fedora 26 : xen (2017-2500a024ef)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-3239-1.NASL
    description This update for xen fixes several issues. These security issues were fixed : - bsc#1068187: Failure to recognize errors in the Populate on Demand (PoD) code allowed for DoS (XSA-246) - bsc#1068191: Missing p2m error checking in PoD code allowed unprivileged guests to retain a writable mapping of freed memory leading to information leaks, privilege escalation or DoS (XSA-247). - CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063123) - CVE-2017-15597: A grant copy operation being done on a grant of a dying domain allowed a malicious guest administrator to corrupt hypervisor memory, allowing for DoS or potentially privilege escalation and information leaks (bsc#1061075). - CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking (bsc#1061081). - CVE-2017-15592: x86 HVM guest OS users were able to cause a DoS (hypervisor crash) or possibly gain privileges because self-linear shadow mappings were mishandled for translated guests (bsc#1061086). - CVE-2017-13672: The VGA display emulator support allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update (bsc#1056336) 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 2018-11-30
    plugin id 105148
    published 2017-12-11
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105148
    title SUSE SLES12 Security Update : xen (SUSE-SU-2017:3239-1)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2017-1181.NASL
    description This update for xen fixes several issues : These security issues were fixed : - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host (bsc#1059777) - CVE-2017-15593: Missing cleanup in the page type system allowed a malicious or buggy PV guest to cause DoS (XSA-242 bsc#1061084) - CVE-2017-15592: A problem in the shadow pagetable code allowed a malicious or buggy HVM guest to cause DoS or cause hypervisor memory corruption potentially allowing the guest to escalate its privilege (XSA-243 bsc#1061086) - CVE-2017-15594: Problematic handling of the selector fields in the Interrupt Descriptor Table (IDT) allowed a malicious or buggy x86 PV guest to escalate its privileges or cause DoS (XSA-244 bsc#1061087) - CVE-2017-15591: Missing checks in the handling of DMOPs allowed malicious or buggy stub domain kernels or tool stacks otherwise living outside of Domain0 to cause a DoS (XSA-238 bsc#1061077) - CVE-2017-15589: Intercepted I/O write operations with less than a full machine word's worth of data were not properly handled, which allowed a malicious unprivileged x86 HVM guest to obtain sensitive information from the host or other guests (XSA-239 bsc#1061080) - CVE-2017-15595: In certain configurations of linear page tables a stack overflow might have occured that allowed a malicious or buggy PV guest to cause DoS and potentially privilege escalation and information leaks (XSA-240 bsc#1061081) - CVE-2017-15588: Under certain conditions x86 PV guests could have caused the hypervisor to miss a necessary TLB flush for a page. This allowed a malicious x86 PV guest to access all of system memory, allowing for privilege escalation, DoS, and information leaks (XSA-241 bsc#1061082) - CVE-2017-15590: Multiple issues existed with the setup of PCI MSI interrupts that allowed a malicious or buggy guest to cause DoS and potentially privilege escalation and information leaks (XSA-237 bsc#1061076) - bsc#1055321: When dealing with the grant map space of add-to-physmap operations, ARM specific code failed to release a lock. This allowed a malicious guest administrator to cause DoS (XSA-235) This update was imported from the SUSE:SLE-12-SP3:Update update project.
    last seen 2019-02-21
    modified 2018-01-26
    plugin id 104085
    published 2017-10-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104085
    title openSUSE Security Update : xen (openSUSE-2017-1181)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-2864-1.NASL
    description This update for xen fixes several issues: These security issues were fixed : - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host (bsc#1059777) - CVE-2017-15593: Missing cleanup in the page type system allowed a malicious or buggy PV guest to cause DoS (XSA-242 bsc#1061084) - CVE-2017-15592: A problem in the shadow pagetable code allowed a malicious or buggy HVM guest to cause DoS or cause hypervisor memory corruption potentially allowing the guest to escalate its privilege (XSA-243 bsc#1061086) - CVE-2017-15594: Problematic handling of the selector fields in the Interrupt Descriptor Table (IDT) allowed a malicious or buggy x86 PV guest to escalate its privileges or cause DoS (XSA-244 bsc#1061087) - CVE-2017-15591: Missing checks in the handling of DMOPs allowed malicious or buggy stub domain kernels or tool stacks otherwise living outside of Domain0 to cause a DoS (XSA-238 bsc#1061077) - CVE-2017-15589: Intercepted I/O write operations with less than a full machine word's worth of data were not properly handled, which allowed a malicious unprivileged x86 HVM guest to obtain sensitive information from the host or other guests (XSA-239 bsc#1061080) - CVE-2017-15595: In certain configurations of linear page tables a stack overflow might have occured that allowed a malicious or buggy PV guest to cause DoS and potentially privilege escalation and information leaks (XSA-240 bsc#1061081) - CVE-2017-15588: Under certain conditions x86 PV guests could have caused the hypervisor to miss a necessary TLB flush for a page. This allowed a malicious x86 PV guest to access all of system memory, allowing for privilege escalation, DoS, and information leaks (XSA-241 bsc#1061082) - CVE-2017-15590: Multiple issues existed with the setup of PCI MSI interrupts that allowed a malicious or buggy guest to cause DoS and potentially privilege escalation and information leaks (XSA-237 bsc#1061076) 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 2018-11-30
    plugin id 104252
    published 2017-10-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104252
    title SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2017:2864-1)
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201801-14.NASL
    description The remote host is affected by the vulnerability described in GLSA-201801-14 (Xen: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Xen. Please review the referenced CVE identifiers for details. Impact : A local attacker could potentially execute arbitrary code with the privileges of the Xen (QEMU) process on the host, gain privileges on the host system, or cause a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen 2019-02-21
    modified 2018-01-26
    plugin id 106038
    published 2018-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=106038
    title GLSA-201801-14 : Xen: Multiple vulnerabilities
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-2812-1.NASL
    description This update for xen fixes several issues: These security issues were fixed : - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host (bsc#1059777) - CVE-2017-15593: Missing cleanup in the page type system allowed a malicious or buggy PV guest to cause DoS (XSA-242 bsc#1061084) - CVE-2017-15592: A problem in the shadow pagetable code allowed a malicious or buggy HVM guest to cause DoS or cause hypervisor memory corruption potentially allowing the guest to escalate its privilege (XSA-243 bsc#1061086) - CVE-2017-15594: Problematic handling of the selector fields in the Interrupt Descriptor Table (IDT) allowed a malicious or buggy x86 PV guest to escalate its privileges or cause DoS (XSA-244 bsc#1061087) - CVE-2017-15589: Intercepted I/O write operations with less than a full machine word's worth of data were not properly handled, which allowed a malicious unprivileged x86 HVM guest to obtain sensitive information from the host or other guests (XSA-239 bsc#1061080) - CVE-2017-15595: In certain configurations of linear page tables a stack overflow might have occured that allowed a malicious or buggy PV guest to cause DoS and potentially privilege escalation and information leaks (XSA-240 bsc#1061081) - CVE-2017-15588: Under certain conditions x86 PV guests could have caused the hypervisor to miss a necessary TLB flush for a page. This allowed a malicious x86 PV guest to access all of system memory, allowing for privilege escalation, DoS, and information leaks (XSA-241 bsc#1061082) - CVE-2017-15590: Multiple issues existed with the setup of PCI MSI interrupts that allowed a malicious or buggy guest to cause DoS and potentially privilege escalation and information leaks (XSA-237 bsc#1061076) 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 2018-11-30
    plugin id 104098
    published 2017-10-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104098
    title SUSE SLES11 Security Update : xen (SUSE-SU-2017:2812-1)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-2815-1.NASL
    description This update for xen fixes several issues: These security issues were fixed : - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host (bsc#1059777) - CVE-2017-15593: Missing cleanup in the page type system allowed a malicious or buggy PV guest to cause DoS (XSA-242 bsc#1061084) - CVE-2017-15592: A problem in the shadow pagetable code allowed a malicious or buggy HVM guest to cause DoS or cause hypervisor memory corruption potentially allowing the guest to escalate its privilege (XSA-243 bsc#1061086) - CVE-2017-15594: Problematic handling of the selector fields in the Interrupt Descriptor Table (IDT) allowed a malicious or buggy x86 PV guest to escalate its privileges or cause DoS (XSA-244 bsc#1061087) - CVE-2017-15589: Intercepted I/O write operations with less than a full machine word's worth of data were not properly handled, which allowed a malicious unprivileged x86 HVM guest to obtain sensitive information from the host or other guests (XSA-239 bsc#1061080) - CVE-2017-15595: In certain configurations of linear page tables a stack overflow might have occured that allowed a malicious or buggy PV guest to cause DoS and potentially privilege escalation and information leaks (XSA-240 bsc#1061081) - CVE-2017-15588: Under certain conditions x86 PV guests could have caused the hypervisor to miss a necessary TLB flush for a page. This allowed a malicious x86 PV guest to access all of system memory, allowing for privilege escalation, DoS, and information leaks (XSA-241 bsc#1061082) - CVE-2017-15590: Multiple issues existed with the setup of PCI MSI interrupts that allowed a malicious or buggy guest to cause DoS and potentially privilege escalation and information leaks (XSA-237 bsc#1061076) 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 2018-11-30
    plugin id 104099
    published 2017-10-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104099
    title SUSE SLES11 Security Update : xen (SUSE-SU-2017:2815-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2017-F2577F2108.NASL
    description update to xen-4.7.4 update Source0 location ---- fix an issue in patch for [XSA-240, CVE-2017-15595] that might be a security issue fix for [XSA-243, CVE-2017-15592] could cause hypervisor crash (DOS) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-02-02
    plugin id 105208
    published 2017-12-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105208
    title Fedora 25 : xen (2017-f2577f2108)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-4050.NASL
    description Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, information leaks, privilege escalation or the execution of arbitrary code.
    last seen 2019-02-21
    modified 2018-11-13
    plugin id 104819
    published 2017-11-29
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104819
    title Debian DSA-4050-1 : xen - security update
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-3236-1.NASL
    description This update for xen fixes several issues. These security issues were fixed : - bsc#1068187: Failure to recognize errors in the Populate on Demand (PoD) code allowed for DoS (XSA-246) - bsc#1068191: Missing p2m error checking in PoD code allowed unprivileged guests to retain a writable mapping of freed memory leading to information leaks, privilege escalation or DoS (XSA-247). - CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063123) - CVE-2017-15597: A grant copy operation being done on a grant of a dying domain allowed a malicious guest administrator to corrupt hypervisor memory, allowing for DoS or potentially privilege escalation and information leaks (bsc#1061075). - CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking (bsc#1061081). - CVE-2017-15592: x86 HVM guest OS users were able to cause a DoS (hypervisor crash) or possibly gain privileges because self-linear shadow mappings were mishandled for translated guests (bsc#1061086). - CVE-2017-13672: The VGA display emulator support allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update (bsc#1056336) 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 2018-11-30
    plugin id 105098
    published 2017-12-08
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105098
    title SUSE SLES12 Security Update : xen (SUSE-SU-2017:3236-1)
  • NASL family Misc.
    NASL id XEN_SERVER_XSA-240.NASL
    description According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a stack overflow vulnerability that is triggered when recursion is not properly handled when de-typing linear pagetables. By stacking multiple layers of page tables, an attacker within a guest can cause a stack overflow, resulting in the Xen process to crash. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.
    last seen 2019-02-21
    modified 2018-08-08
    plugin id 103975
    published 2017-10-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103975
    title Xen Hypervisor Pagetable De-typing Recursion Handling Guest-to-Host DoS (XSA-240)
  • NASL family Misc.
    NASL id XEN_SERVER_XSA-244.NASL
    description According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by an unspecified flaw that is triggered when, as a new CPU is brought online, it copies certain selector fields from CPU0's Interrupt Descriptor Table (IDT) while CPU0 is in HVM context. This may result in incorrect values being copied, allowing an attacker on the guest to cause a denial of service or gain elevated privileges on the host. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.
    last seen 2019-02-21
    modified 2018-08-08
    plugin id 103979
    published 2017-10-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103979
    title Xen Hypervisor New CPU Interrupt Descriptor Table (IDT) Copy Handling Guest-to-Host Privilege Escalation (XSA-244)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2017-0166.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - BUILDINFO: xen commit=6c164f71ed0dc46201f1d69de65d05d138556fcc - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - x86/cpu: fix IST handling during PCPU bringup (Andrew Cooper) [Orabug: 26901427] (CVE-2017-15594) - x86/shadow: Don't create self-linear shadow mappings for 4-level translated guests (Andrew Cooper) [Orabug: 26901416] (CVE-2017-15592) - x86: Disable the use of auto-translated PV guests (Andrew Cooper) [Orabug: 26901416] (CVE-2017-15592) - x86: don't allow page_unlock to drop the last type reference (Jan Beulich) [Orabug: 26901404] (CVE-2017-15593) - x86: don't store possibly stale TLB flush time stamp (Jan Beulich) [Orabug: 26901395] (CVE-2017-15588) - x86/mm: Disable PV linear pagetables by default (George Dunlap) [Orabug: 26901366] (CVE-2017-15595) - x86: limit linear page table use to a single level (Jan Beulich) [Orabug: 26901366] (CVE-2017-15595) - x86/HVM: prefill partially used variable on emulation paths (Jan Beulich) [Orabug: 26901350] (CVE-2017-15589) - x86/FLASK: fix unmap-domain-IRQ XSM hook (Jan Beulich) [Orabug: 26901322] (CVE-2017-15590) - x86/IRQ: conditionally preserve irq <-> pirq mapping on map error paths (Jan Beulich) [Orabug: 26901322] (CVE-2017-15590) - x86/MSI: disallow redundant enabling (Jan Beulich) [Orabug: 26901322] (CVE-2017-15590) - x86: enforce proper privilege when (un)mapping pIRQ-s (Jan Beulich) [Orabug: 26901322] (CVE-2017-15590) - x86: don't allow MSI pIRQ mapping on unowned device (Jan Beulich) [Orabug: 26901322] (CVE-2017-15590) - gnttab: fix pin count / page reference race (Jan Beulich) [Orabug: 26901282] (CVE-2017-15597)
    last seen 2019-02-21
    modified 2018-11-19
    plugin id 104249
    published 2017-10-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104249
    title OracleVM 3.4 : xen (OVMSA-2017-0166)
  • NASL family Misc.
    NASL id XEN_SERVER_XSA-237.NASL
    description According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by multiple vulnerabilities related to the setup of PCI MSI interrupts, which may allow an attacker on the guest to cause a denial of service on the host, potentially disclose sensitive information from the host, or potentially gain elevated privileges on the host. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.
    last seen 2019-02-21
    modified 2018-08-08
    plugin id 103972
    published 2017-10-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103972
    title Xen Hypervisor PCI MSI Interrupt Setup Multiple Guest-to-Host Privilege Escalation (XSA-237)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-2873-1.NASL
    description This update for xen fixes several issues: These security issues were fixed : - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host (bsc#1059777) - CVE-2017-15593: Missing cleanup in the page type system allowed a malicious or buggy PV guest to cause DoS (XSA-242 bsc#1061084) - CVE-2017-15592: A problem in the shadow pagetable code allowed a malicious or buggy HVM guest to cause DoS or cause hypervisor memory corruption potentially allowing the guest to escalate its privilege (XSA-243 bsc#1061086) - CVE-2017-15594: Problematic handling of the selector fields in the Interrupt Descriptor Table (IDT) allowed a malicious or buggy x86 PV guest to escalate its privileges or cause DoS (XSA-244 bsc#1061087) - CVE-2017-15591: Missing checks in the handling of DMOPs allowed malicious or buggy stub domain kernels or tool stacks otherwise living outside of Domain0 to cause a DoS (XSA-238 bsc#1061077) - CVE-2017-15589: Intercepted I/O write operations with less than a full machine word's worth of data were not properly handled, which allowed a malicious unprivileged x86 HVM guest to obtain sensitive information from the host or other guests (XSA-239 bsc#1061080) - CVE-2017-15595: In certain configurations of linear page tables a stack overflow might have occured that allowed a malicious or buggy PV guest to cause DoS and potentially privilege escalation and information leaks (XSA-240 bsc#1061081) - CVE-2017-15588: Under certain conditions x86 PV guests could have caused the hypervisor to miss a necessary TLB flush for a page. This allowed a malicious x86 PV guest to access all of system memory, allowing for privilege escalation, DoS, and information leaks (XSA-241 bsc#1061082) - CVE-2017-15590: Multiple issues existed with the setup of PCI MSI interrupts that allowed a malicious or buggy guest to cause DoS and potentially privilege escalation and information leaks (XSA-237 bsc#1061076) 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 2018-11-30
    plugin id 104255
    published 2017-10-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104255
    title SUSE SLES12 Security Update : xen (SUSE-SU-2017:2873-1)
  • NASL family Misc.
    NASL id CITRIX_XENSERVER_CTX228867.NASL
    description The version of Citrix XenServer installed on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities as noted in the CTX228867 advisory.
    last seen 2019-02-21
    modified 2018-07-06
    plugin id 103927
    published 2017-10-18
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103927
    title Citrix XenServer Multiple Vulnerabilities (CTX228867)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2017-0162.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - BUILDINFO: OVMF commit=173bf5c847e3ca8b42c11796ce048d8e2e916ff8 - BUILDINFO: xen commit=41067cbb7a1ecab6aa2ca0d8d40a4c9f36c5e76e - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - x86/cpu: fix IST handling during PCPU bringup (Andrew Cooper) [Orabug: 26901421] (CVE-2017-15594) - x86/shadow: Don't create self-linear shadow mappings for 4-level translated guests (Andrew Cooper) [Orabug: 26901413] (CVE-2017-15592) - x86: Disable the use of auto-translated PV guests (Andrew Cooper) [Orabug: 26901413] (CVE-2017-15592) - x86: don't allow page_unlock to drop the last type reference (Jan Beulich) [Orabug: 26901401] (CVE-2017-15593) - x86: don't store possibly stale TLB flush time stamp (Jan Beulich) [Orabug: 26901391] (CVE-2017-15588) - x86/mm: Disable PV linear pagetables by default (George Dunlap) [Orabug: 26901363] (CVE-2017-15595) - x86: limit linear page table use to a single level (Jan Beulich) [Orabug: 26901363] (CVE-2017-15595) - x86/HVM: prefill partially used variable on emulation paths (Jan Beulich) [Orabug: 26901338] (CVE-2017-15589) - x86/FLASK: fix unmap-domain-IRQ XSM hook (Jan Beulich) [Orabug: 26901311] (CVE-2017-15590) - x86/IRQ: conditionally preserve irq <-> pirq mapping on map error paths (Jan Beulich) [Orabug: 26901311] (CVE-2017-15590) - x86/MSI: disallow redundant enabling (Jan Beulich) [Orabug: 26901311] (CVE-2017-15590) - x86: enforce proper privilege when (un)mapping pIRQ-s (Jan Beulich) [Orabug: 26901311] (CVE-2017-15590) - x86: don't allow MSI pIRQ mapping on unowned device (Jan Beulich) [Orabug: 26901311] (CVE-2017-15590) - gnttab: fix pin count / page reference race (Jan Beulich) [Orabug: 26901277] (CVE-2017-15597)
    last seen 2019-02-21
    modified 2018-11-19
    plugin id 104201
    published 2017-10-27
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104201
    title OracleVM 3.2 / 3.3 / 3.4 : xen (OVMSA-2017-0162)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DLA-1559.NASL
    description Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, informations leaks or privilege escalation. For Debian 8 'Jessie', these problems have been fixed in version 4.4.4lts3-0+deb8u1. We recommend that you upgrade your xen packages. NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA 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 2018-10-31
    plugin id 118503
    published 2018-10-31
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=118503
    title Debian DLA-1559-1 : xen security update
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2017-C432DB2971.NASL
    description xen: various flaws (#1501391) multiple MSI mapping issues on x86 [XSA-237] DMOP map/unmap missing argument checks [XSA-238] hypervisor stack leak in x86 I/O intercept code [XSA-239] Unlimited recursion in linear pagetable de-typing [XSA-240] Stale TLB entry due to page type release race [XSA-241] page type reference leak on x86 [XSA-242] x86: Incorrect handling of self-linear shadow mappings with translated guests [XSA-243] x86: Incorrect handling of IST settings during CPU hotplug [XSA-244] Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-02-02
    plugin id 105971
    published 2018-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105971
    title Fedora 27 : xen (2017-c432db2971)
  • NASL family Misc.
    NASL id XEN_SERVER_XSA-243.NASL
    description According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by an unspecified flaw in mm/shadow/multi.c that is triggered during the handling of self-linear shadow mappings with translated guests. This may allow an attacker on the guest to cause a denial of service or gain elevated privileges on the host. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.
    last seen 2019-02-21
    modified 2018-08-08
    plugin id 103978
    published 2017-10-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103978
    title Xen Hypervisor Translated Guest Self-linear Shadow Mapping Handling Guest-to-Host Privilege Escalation (XSA-243)
  • NASL family Misc.
    NASL id XEN_SERVER_XSA-242.NASL
    description According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by an unspecified flaw in arch/x86/mm.c that is triggered as page type references are not properly handled when performing certain cleanup operations. This allows an attacker on the guest to consume excessive memory, resulting in a denial of service for the host. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.
    last seen 2019-02-21
    modified 2018-08-08
    plugin id 103977
    published 2017-10-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103977
    title Xen Hypervisor Page Type Reference Handling Memory Exhaustion Guest-to-Host DoS (XSA-242)
  • NASL family Misc.
    NASL id XEN_SERVER_XSA-239.NASL
    description According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by an unspecified flaw in the hvmemul_do_io() function in arch/x86/hvm/emulate.c that is triggered as an internal structure may contain data from an uninitialized hypervisor stack slot. This may allow an attacker on the guest to gain access to potentially sensitive information from the host. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.
    last seen 2019-02-21
    modified 2018-08-08
    plugin id 103974
    published 2017-10-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103974
    title Xen Hypervisor I/O Intercept Code Hypervisor Stack Guest-to-Host Information Disclosure (XSA-239)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2017-5BCDDC1984.NASL
    description xen: various flaws (#1501391) multiple MSI mapping issues on x86 [XSA-237] DMOP map/unmap missing argument checks [XSA-238] hypervisor stack leak in x86 I/O intercept code [XSA-239] Unlimited recursion in linear pagetable de-typing [XSA-240] Stale TLB entry due to page type release race [XSA-241] page type reference leak on x86 [XSA-242] x86: Incorrect handling of self-linear shadow mappings with translated guests [XSA-243] x86: Incorrect handling of IST settings during CPU hotplug [XSA-244] ---- ARM: Some memory not scrubbed at boot [XSA-245] Qemu: vga: reachable assert failure during during display update [CVE-2017-13673] (#1486591) Qemu: vga: OOB read access during display update [CVE-2017-13672] (#1486562) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-02-01
    plugin id 104310
    published 2017-11-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104310
    title Fedora 26 : xen (2017-5bcddc1984)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-3242-1.NASL
    description This update for xen fixes several issues. These security issues were fixed : - bsc#1068187: Failure to recognize errors in the Populate on Demand (PoD) code allowed for DoS (XSA-246) - bsc#1068191: Missing p2m error checking in PoD code allowed unprivileged guests to retain a writable mapping of freed memory leading to information leaks, privilege escalation or DoS (XSA-247). - CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063123) - CVE-2017-15597: A grant copy operation being done on a grant of a dying domain allowed a malicious guest administrator to corrupt hypervisor memory, allowing for DoS or potentially privilege escalation and information leaks (bsc#1061075). - CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking (bsc#1061081). - CVE-2017-15592: x86 HVM guest OS users were able to cause a DoS (hypervisor crash) or possibly gain privileges because self-linear shadow mappings were mishandled for translated guests (bsc#1061086). - CVE-2017-13672: The VGA display emulator support allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update (bsc#1056336) 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 2018-11-30
    plugin id 105149
    published 2017-12-11
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105149
    title SUSE SLES11 Security Update : xen (SUSE-SU-2017:3242-1)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2017-1239.NASL
    description This update for xen fixes several issues : These security issues were fixed : - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host (bsc#1059777) - CVE-2017-15593: Missing cleanup in the page type system allowed a malicious or buggy PV guest to cause DoS (XSA-242 bsc#1061084) - CVE-2017-15592: A problem in the shadow pagetable code allowed a malicious or buggy HVM guest to cause DoS or cause hypervisor memory corruption potentially allowing the guest to escalate its privilege (XSA-243 bsc#1061086) - CVE-2017-15594: Problematic handling of the selector fields in the Interrupt Descriptor Table (IDT) allowed a malicious or buggy x86 PV guest to escalate its privileges or cause DoS (XSA-244 bsc#1061087) - CVE-2017-15591: Missing checks in the handling of DMOPs allowed malicious or buggy stub domain kernels or tool stacks otherwise living outside of Domain0 to cause a DoS (XSA-238 bsc#1061077) - CVE-2017-15589: Intercepted I/O write operations with less than a full machine word's worth of data were not properly handled, which allowed a malicious unprivileged x86 HVM guest to obtain sensitive information from the host or other guests (XSA-239 bsc#1061080) - CVE-2017-15595: In certain configurations of linear page tables a stack overflow might have occured that allowed a malicious or buggy PV guest to cause DoS and potentially privilege escalation and information leaks (XSA-240 bsc#1061081) - CVE-2017-15588: Under certain conditions x86 PV guests could have caused the hypervisor to miss a necessary TLB flush for a page. This allowed a malicious x86 PV guest to access all of system memory, allowing for privilege escalation, DoS, and information leaks (XSA-241 bsc#1061082) - CVE-2017-15590: Multiple issues existed with the setup of PCI MSI interrupts that allowed a malicious or buggy guest to cause DoS and potentially privilege escalation and information leaks (XSA-237 bsc#1061076) This non-security issue was fixed : - bsc#1057358: Fixed boot when secure boot is enabled This update was imported from the SUSE:SLE-12-SP2:Update update project.
    last seen 2019-02-21
    modified 2018-01-26
    plugin id 104349
    published 2017-11-02
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104349
    title openSUSE Security Update : xen (openSUSE-2017-1239)
  • NASL family Misc.
    NASL id XEN_SERVER_XSA-238.NASL
    description According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by unspecified flaws in arch/x86/hvm/ioreq.c that is triggered when handling DMOPs. This may allow an attacker within a guest to consume excessive resources. Note this can only be exploited by domains controlling HVM guests. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.
    last seen 2019-02-21
    modified 2018-08-08
    plugin id 103973
    published 2017-10-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103973
    title Xen Hypervisor Multiple Functions DMOP Handling Guest-to-Host DoS (XSA-238)
  • NASL family Misc.
    NASL id XEN_SERVER_XSA-241.NASL
    description According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a race condition that is triggered when handling TLB flush requests. This allows an attacker on the guest to access all system memory, allowing them to cause a denial of service, disclose sensitive information, or gain elevated privileges on the host. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.
    last seen 2019-02-21
    modified 2018-08-08
    plugin id 103976
    published 2017-10-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103976
    title Xen Hypervisor TLB Flush Request Handling Race Condition System Memory Access Guest-to-Host Privilege Escalation (XSA-241)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-2856-1.NASL
    description This update for xen fixes several issues: These security issues were fixed : - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host (bsc#1059777) - CVE-2017-15593: Missing cleanup in the page type system allowed a malicious or buggy PV guest to cause DoS (XSA-242 bsc#1061084) - CVE-2017-15592: A problem in the shadow pagetable code allowed a malicious or buggy HVM guest to cause DoS or cause hypervisor memory corruption potentially allowing the guest to escalate its privilege (XSA-243 bsc#1061086) - CVE-2017-15594: Problematic handling of the selector fields in the Interrupt Descriptor Table (IDT) allowed a malicious or buggy x86 PV guest to escalate its privileges or cause DoS (XSA-244 bsc#1061087) - CVE-2017-15589: Intercepted I/O write operations with less than a full machine word's worth of data were not properly handled, which allowed a malicious unprivileged x86 HVM guest to obtain sensitive information from the host or other guests (XSA-239 bsc#1061080) - CVE-2017-15595: In certain configurations of linear page tables a stack overflow might have occured that allowed a malicious or buggy PV guest to cause DoS and potentially privilege escalation and information leaks (XSA-240 bsc#1061081) - CVE-2017-15588: Under certain conditions x86 PV guests could have caused the hypervisor to miss a necessary TLB flush for a page. This allowed a malicious x86 PV guest to access all of system memory, allowing for privilege escalation, DoS, and information leaks (XSA-241 bsc#1061082) - CVE-2017-15590: Multiple issues existed with the setup of PCI MSI interrupts that allowed a malicious or buggy guest to cause DoS and potentially privilege escalation and information leaks (XSA-237 bsc#1061076) 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 2018-11-30
    plugin id 104209
    published 2017-10-27
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104209
    title SUSE SLES12 Security Update : xen (SUSE-SU-2017:2856-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2017-C31799EE4A.NASL
    description fix an issue in patch for [XSA-240, CVE-2017-15595] that might be a security issue fix for [XSA-243, CVE-2017-15592] could cause hypervisor crash (DOS) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-02-02
    plugin id 105970
    published 2018-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105970
    title Fedora 27 : xen (2017-c31799ee4a)
refmap via4
bid
  • 101513
  • 102129
confirm
debian DSA-4050
gentoo GLSA-201801-14
mlist
  • [debian-lts-announce] 20171120 [SECURITY] [DLA 1181-1] xen security update
  • [debian-lts-announce] 20181030 [SECURITY] [DLA 1559-1] xen security update
sectrack 1039568
Last major update 18-10-2017 - 04:29
Published 18-10-2017 - 04:29
Last modified 30-10-2018 - 06:29
Back to Top