Ubuntu 12.04 LTS / 12.10 / 13.10 : libyaml regression (USN-2098-2)

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


Synopsis :

The remote Ubuntu host is missing a security-related patch.

Description :

USN-2098-1 fixed a vulnerability in LibYAML. The security fix used
introduced a regression that caused parsing failures for certain valid
YAML files. This update fixes the problem.

We apologize for the inconvenience.

Florian Weimer discovered that LibYAML incorrectly handled certain
large yaml documents. An attacker could use this issue to cause
LibYAML to crash, resulting in a denial of service, or possibly
execute arbitrary code.

Solution :

Update the affected libyaml-0-2 package.

Risk factor :

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

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 72502 ()

Bugtraq ID: 65258

CVE ID: