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Vulnerability Details : CVE-2012-4461

The KVM subsystem in the Linux kernel before 3.6.9, when running on hosts that use qemu userspace without XSAVE, allows local users to cause a denial of service (kernel OOPS) by using the KVM_SET_SREGS ioctl to set the X86_CR4_OSXSAVE bit in the guest cr4 register, then calling the KVM_RUN ioctl.
Publish Date : 2013-01-22 Last Update Date : 2013-06-20
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- CVSS Scores & Vulnerability Types

CVSS Score
1.9
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID CWE id is not defined for this vulnerability

- Related OVAL Definitions

Title Definition Id Class Family
ELSA-2013:0223: kernel security and bug fix update (Moderate) oval:org.mitre.oval:def:23832 unix
RHSA-2013:0223: kernel security and bug fix update (Moderate) oval:org.mitre.oval:def:20850 unix
RHSA-2013:0223: kernel security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20130223 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2012-4461

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 3.6 Version Details Vulnerabilities
2 OS Linux Linux Kernel 3.6.1 Version Details Vulnerabilities
3 OS Linux Linux Kernel 3.6.2 Version Details Vulnerabilities
4 OS Linux Linux Kernel 3.6.3 Version Details Vulnerabilities
5 OS Linux Linux Kernel 3.6.4 Version Details Vulnerabilities
6 OS Linux Linux Kernel 3.6.5 Version Details Vulnerabilities
7 OS Linux Linux Kernel 3.6.6 Version Details Vulnerabilities
8 OS Linux Linux Kernel 3.6.7 Version Details Vulnerabilities
9 OS Linux Linux Kernel 3.6.8 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 9

- References For CVE-2012-4461

http://article.gmane.org/gmane.comp.emulators.kvm.devel/100742
http://rhn.redhat.com/errata/RHSA-2013-0882.html
REDHAT RHSA-2013:0882
http://rhn.redhat.com/errata/RHSA-2013-0223.html
REDHAT RHSA-2013:0223
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
SUSE openSUSE-SU-2013:0925
https://www.suse.com/support/update/announcement/2012/suse-su-20121679-1.html
SUSE SUSE-SU-2012:1679
https://bugzilla.redhat.com/show_bug.cgi?id=862900 CONFIRM
http://www.securityfocus.com/bid/56414
BID 56414 Linux Kernel KVM CVE-2012-4461 Local Denial of Service Vulnerability Release Date:2013-11-27
http://www.openwall.com/lists/oss-security/2012/11/06/14
MLIST [oss-security] 20121106 CVE-2012-4461 -- kernel: kvm: invalid opcode oops on SET_SREGS with OSXSAVE bit set
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=6d1068b3a98519247d8ba4ec85cd40ac136dbdf9 CONFIRM
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.6.9 CONFIRM
http://secunia.com/advisories/51160
SECUNIA 51160

- Metasploit Modules Related To CVE-2012-4461

There are not any metasploit modules related to this vulnerability (Please visit www.metasploit.com for more information)


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