National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2013-4154 Detail

Current Description

The qemuAgentCommand function in libvirt before 1.1.1, when a guest agent is not configured, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via vectors related to "agent based cpu (un)plug," as demonstrated by the "virsh vcpucount foobar --guest" command.

Source:  MITRE
Description Last Modified:  09/30/2013
View Analysis Description

Evaluator Description

Per: http://cwe.mitre.org/data/definitions/476.html 'CWE-476: NULL Pointer Dereference'

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=96518d4316b711c72205117f8d5c967d5127bbb6 Exploit Patch
http://libvirt.org/news.html
http://openwall.com/lists/oss-security/2013/07/19/12 Patch
https://bugzilla.redhat.com/show_bug.cgi?id=984821 Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=986386 Patch

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:redhat:libvirt:1.0.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:redhat:libvirt:1.0.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:redhat:libvirt:1.0.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:redhat:libvirt:1.0.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:redhat:libvirt:1.0.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:redhat:libvirt:1.0.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:redhat:libvirt:1.0.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
1.1.0


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2013-4154
NVD Published Date:
09/30/2013
NVD Last Modified:
10/11/2013