Debian DSA-2927-1 : libxfont - security update

high Nessus Plugin ID 73997
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Synopsis

The remote Debian host is missing a security-related update.

Description

Ilja van Sprundel of IOActive discovered several security issues in the X.Org libXfont library, which may allow a local, authenticated user to attempt to raise privileges; or a remote attacker who can control the font server to attempt to execute code with the privileges of the X server.

- CVE-2014-0209 Integer overflow of allocations in font metadata file parsing could allow a local user who is already authenticated to the X server to overwrite other memory in the heap.

- CVE-2014-0210 libxfont does not validate length fields when parsing xfs protocol replies allowing to write past the bounds of allocated memory when storing the returned data from the font server.

- CVE-2014-0211 Integer overflows calculating memory needs for xfs replies could result in allocating too little memory and then writing the returned data from the font server past the end of the allocated buffer.

Solution

Upgrade the libxfont packages.

For the oldstable distribution (squeeze), these problems have been fixed in version 1:1.4.1-5.

For the stable distribution (wheezy), these problems have been fixed in version 1:1.4.5-4.

See Also

https://security-tracker.debian.org/tracker/CVE-2014-0209

https://security-tracker.debian.org/tracker/CVE-2014-0210

https://security-tracker.debian.org/tracker/CVE-2014-0211

https://packages.debian.org/source/squeeze/libxfont

https://packages.debian.org/source/wheezy/libxfont

https://www.debian.org/security/2014/dsa-2927

Plugin Details

Severity: High

ID: 73997

File Name: debian_DSA-2927.nasl

Version: 1.9

Type: local

Agent: unix

Published: 5/14/2014

Updated: 1/11/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libxfont, cpe:/o:debian:debian_linux:6.0, cpe:/o:debian:debian_linux:7.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/13/2014

Reference Information

CVE: CVE-2014-0209, CVE-2014-0210, CVE-2014-0211

DSA: 2927