National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2011-2512 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 5.8 MEDIUM
Vector: (AV:A/AC:L/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 6.5


Access Vector (AV): Local_Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=commitdiff;h=7157e2e23e89adcd436caeab31fdd6b47eded377 Exploit Patch
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00007.html
http://rhn.redhat.com/errata/RHSA-2011-0919.html
http://ubuntu.com/usn/usn-1165-1
http://www.openwall.com/lists/oss-security/2011/06/28/13 Patch
http://www.openwall.com/lists/oss-security/2011/06/29/15 Patch
https://hermes.opensuse.org/messages/9605323
https://www.debian.org/security/2011/dsa-2270

Technical Details

Vulnerability Type (View All)

  • Improper Input Validation (CWE-20)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:kvm_group:qemu-kvm:0.12:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:kvm_group:qemu-kvm:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
0.14.0


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2011-2512
NVD Published Date:
06/21/2012
NVD Last Modified:
12/07/2016