Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 : libxml2 vulnerabilities (USN-815-1)

Ubuntu Security Notice (C) 2009-2016 Canonical, Inc. / NASL script (C) 2009-2016 Tenable Network Security, Inc.


Synopsis :

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

Description :

It was discovered that libxml2 did not correctly handle root XML
document element DTD definitions. If a user were tricked into
processing a specially crafted XML document, a remote attacker could
cause the application linked against libxml2 to crash, leading to a
denial of service. (CVE-2009-2414)

It was discovered that libxml2 did not correctly parse Notation and
Enumeration attribute types. If a user were tricked into processing a
specially crafted XML document, a remote attacker could cause the
application linked against libxml2 to crash, leading to a denial of
service. (CVE-2009-2416)

USN-644-1 fixed a vulnerability in libxml2. This advisory provides the
corresponding update for Ubuntu 9.04.

It was discovered that libxml2 did not correctly handle long entity
names. If a user were tricked into processing a specially crafted XML
document, a remote attacker could execute arbitrary code with user
privileges or cause the application linked against libxml2 to crash,
leading to a denial of service. (CVE-2008-3529).

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 packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 7.8
(CVSS2#E:POC/RL:OF/RC:C)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 40576 ()

Bugtraq ID: 31126
36010

CVE ID: CVE-2008-3529
CVE-2009-2414
CVE-2009-2416