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

Ubuntu Security Notice (C) 2013-2014 Canonical, Inc. / NASL script (C) 2013-2014 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).

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