Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.04 : libvirt vulnerabilities (USN-1954-1)

Ubuntu Security Notice (C) 2013-2016 Canonical, Inc. / NASL script (C) 2013-2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related
patches.

Description :

It was discovered that libvirt used the pkcheck tool in an unsafe
manner. A local attacker could possibly use this flaw to bypass polkit
authentication. In Ubuntu, libvirt polkit authentication is not
enabled by default. (CVE-2013-4311)

It was discovered that libvirt incorrectly handled certain memory
stats requests. A remote attacker could use this issue to cause
libvirt to crash, resulting in a denial of service. This issue only
affected Ubuntu 12.04 LTS, Ubuntu 12.10, and Ubuntu 13.04.
(CVE-2013-4296)

It was discovered that libvirt incorrectly handled certain bitmap
operations. A remote attacker could use this issue to cause libvirt to
crash, resulting in a denial of service. This issue only affected
Ubuntu 13.04. (CVE-2013-5651).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected libvirt-bin and / or libvirt0 packages.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 4.3
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 69972 ()

Bugtraq ID: 62508
62509
62510

CVE ID: CVE-2013-4296
CVE-2013-4311
CVE-2013-5651