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Vulnerability Details : CVE-2011-2512

The virtio_queue_notify in qemu-kvm 0.14.0 and earlier does not properly validate the virtqueue number, which allows guest users to cause a denial of service (guest crash) and possibly execute arbitrary code via a negative number in the Queue Notify field of the Virtio Header, which bypasses a signed comparison.
Publish Date : 2012-06-21 Last Update Date : 2016-12-07
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- CVSS Scores & Vulnerability Types

CVSS Score
5.8
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceExecute CodeBypass a restriction or similar
CWE ID 20

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat important
6.5
 AV:A/AC:H/Au:S/C:C/I:C/A:C 2011-06-27 2011-05-08
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-2512 oval:org.opensuse.security:def:20112512 unix
DEPRECATED: ELSA-2011-0919 -- qemu-kvm security and bug fix update (important) oval:org.mitre.oval:def:28000 unix
ELSA-2011:0919: qemu-kvm security and bug fix update (Important) oval:org.mitre.oval:def:23582 unix
RHSA-2011:0919: qemu-kvm security and bug fix update (Important) oval:org.mitre.oval:def:22055 unix
RHSA-2011:0919: qemu-kvm security and bug fix update (Important) oval:com.redhat.rhsa:def:20110919 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-2011-2512

# Product Type Vendor Product Version Update Edition Language
1 Application Kvm Group Qemu-kvm 0.12 Version Details Vulnerabilities
2 Application Kvm Group Qemu-kvm 0.14.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Kvm Group Qemu-kvm 2

- References For CVE-2011-2512

http://www.openwall.com/lists/oss-security/2011/06/29/15
MLIST [oss-security] 20110629 Re: CVE request: qemu-kvm: OOB memory access caused by negative vq notifies
https://www.debian.org/security/2011/dsa-2270
DEBIAN DSA-2270
https://hermes.opensuse.org/messages/9605323
SUSE SUSE-SU-2011:0806
http://ubuntu.com/usn/usn-1165-1
UBUNTU USN-1165-1
http://www.openwall.com/lists/oss-security/2011/06/28/13
MLIST [oss-security] 20110628 CVE request: qemu-kvm: OOB memory access caused by negative vq notifies
http://rhn.redhat.com/errata/RHSA-2011-0919.html
REDHAT RHSA-2011:0919
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00007.html
SUSE openSUSE-SU-2011:0803
http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=commitdiff;h=7157e2e23e89adcd436caeab31fdd6b47eded377 CONFIRM

- Metasploit Modules Related To CVE-2011-2512

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