Ubuntu 12.04 LTS / 12.10 / 13.10 : libvirt vulnerabilities (USN-2093-1)

Ubuntu Security Notice (C) 2014-2016 Canonical, Inc. / NASL script (C) 2014-2016 Tenable Network Security, Inc.


Synopsis :

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

Description :

Martin Kletzander discovered that libvirt incorrectly handled reading
memory tunables from LXC guests. A local user could possibly use this
flaw to cause libvirtd to crash, resulting in a denial of service.
This issue only affected Ubuntu 13.10. (CVE-2013-6436)

Dario Faggioli discovered that libvirt incorrectly handled the libxl
driver. A local user could possibly use this flaw to cause libvirtd to
crash, resulting in a denial of service, or possibly execute arbitrary
code. This issue only affected Ubuntu 13.10. (CVE-2013-6457)

It was discovered that libvirt contained multiple race conditions in
block device handling. A remote read-only user could use this flaw to
cause libvirtd to crash, resulting in a denial of service.
(CVE-2013-6458)

Eric Blake discovered that libvirt incorrectly handled certain ACLs.
An attacker could use this flaw to possibly obtain certain sensitive
information. This issue only affected Ubuntu 13.10. (CVE-2014-0028)

Jiri Denemark discovered that libvirt incorrectly handled keepalives.
A remote attacker could possibly use this flaw to cause libvirtd to
crash, resulting in a denial of service. (CVE-2014-1447).

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 : 6.8
(CVSS2#AV:A/AC:H/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.9
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 72232 ()

Bugtraq ID: 64549
64723
64945
64963
65004

CVE ID: CVE-2013-6436
CVE-2013-6457
CVE-2013-6458
CVE-2014-0028
CVE-2014-1447