Ubuntu 10.04 LTS / 10.10 / 11.04 : libvirt vulnerabilities (USN-1152-1)

Ubuntu Security Notice (C) 2011-2013 Canonical, Inc. / NASL script (C) 2011-2013 Tenable Network Security, Inc.


Synopsis :

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

Description :

It was discovered that libvirt did not use thread-safe error
reporting. A remote attacker could exploit this to cause a denial of
service via application crash. (CVE-2011-1486)

Eric Blake discovered that libvirt had an off-by-one error which could
be used to reopen disk probing and bypass the fix for CVE-2010-2238. A
privileged attacker in the guest could exploit this to read arbitrary
files on the host. This issue only affected Ubuntu 11.04. By default,
guests are confined by an AppArmor profile which provided partial
protection against this flaw. (CVE-2011-2178).

Solution :

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

Risk factor :

Medium / CVSS Base Score : 4.4
(CVSS2#AV:L/AC:M/Au:S/C:C/I:N/A:N)
CVSS Temporal Score : 3.3
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 55167 ()

Bugtraq ID: 47148

CVE ID: CVE-2010-2238
CVE-2011-1486
CVE-2011-2178