Ubuntu 8.04 LTS / 9.04 / 9.10 : xorg-server vulnerabilities (USN-939-1)

High Nessus Plugin ID 46672


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


Loic Minier discovered that xvfb-run did not correctly keep the X.org session cookie private. A local attacker could gain access to any local sessions started by xvfb-run. Ubuntu 9.10 was not affected.

It was discovered that the X.org server did not correctly handle certain calculations. A remote attacker could exploit this to crash the X.org session or possibly run arbitrary code with root privileges.

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.


Update the affected packages.

Plugin Details

Severity: High

ID: 46672

File Name: ubuntu_USN-939-1.nasl

Version: $Revision: 1.10 $

Type: local

Agent: unix

Published: 2010/05/19

Modified: 2016/05/27

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:C/A:C

Temporal Vector: CVSS2#E:ND/RL:OF/RC:ND

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:xdmx, p-cpe:/a:canonical:ubuntu_linux:xdmx-tools, p-cpe:/a:canonical:ubuntu_linux:xnest, p-cpe:/a:canonical:ubuntu_linux:xserver-common, p-cpe:/a:canonical:ubuntu_linux:xserver-xephyr, p-cpe:/a:canonical:ubuntu_linux:xserver-xfbdev, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-dbg, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-dev, p-cpe:/a:canonical:ubuntu_linux:xvfb, cpe:/o:canonical:ubuntu_linux:8.04:-:lts, cpe:/o:canonical:ubuntu_linux:9.04, cpe:/o:canonical:ubuntu_linux:9.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2010/05/18

Reference Information

CVE: CVE-2009-1573, CVE-2010-1166

BID: 34828, 39758

OSVDB: 54680, 64246

USN: 939-1

CWE: 264