FreeBSD : libXfont -- X Font Service Protocol and Font metadata file handling issues (b060ee50-daba-11e3-99f2-bcaec565249c)

High Nessus Plugin ID 74004


The remote FreeBSD host is missing one or more security-related updates.


Alan Coopersmith reports :

Ilja van Sprundel, a security researcher with IOActive, has discovered several issues in the way the libXfont library handles the responses it receives from xfs servers, and has worked with X.Org's security team to analyze, confirm, and fix these issues.

Most of these issues stem from libXfont trusting the font server to send valid protocol data, and not verifying that the values will not overflow or cause other damage. This code is commonly called from the X server when an X Font Server is active in the font path, so may be running in a setuid-root process depending on the X server in use.
Exploits of this path could be used by a local, authenticated user to attempt to raise privileges; or by a remote attacker who can control the font server to attempt to execute code with the privileges of the X server.


Update the affected packages.

See Also

Plugin Details

Severity: High

ID: 74004

File Name: freebsd_pkg_b060ee50daba11e399f2bcaec565249c.nasl

Version: $Revision: 1.4 $

Type: local

Published: 2014/05/14

Modified: 2015/07/16

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:libXfont, p-cpe:/a:freebsd:freebsd:linux-c6-xorg-libs, p-cpe:/a:freebsd:freebsd:linux-f10-xorg-libs, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 2014/05/13

Vulnerability Publication Date: 2014/05/13

Reference Information

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