Detections
Analytics
FreeBSD : libXfont -- X Font Service Protocol and Font metadata file handling issues (b060ee50-daba-11e3-99f2-bcaec565249c)
high Nessus Plugin ID 74004
Language:
Synopsis
The remote FreeBSD host is missing one or more security-related updates.Description
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.
Solution
Update the affected packages.See Also
https://lists.x.org/archives/xorg-announce/2014-May/002431.html
Plugin Details
Severity: High
ID: 74004
File Name: freebsd_pkg_b060ee50daba11e399f2bcaec565249c.nasl
Version: 1.8
Type: local
Family: FreeBSD Local Security Checks
Published: 5/14/2014
Updated: 1/6/2021
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
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: 5/13/2014
Vulnerability Publication Date: 5/13/2014