X.Org libXfont BDF Font File Handling Stack Buffer Overflow Vulnerability

BID:64694

Info

X.Org libXfont BDF Font File Handling Stack Buffer Overflow Vulnerability

Bugtraq ID: 64694
Class: Boundary Condition Error
CVE: CVE-2013-6462
Remote: Yes
Local: No
Published: Dec 24 2013 12:00AM
Updated: Jul 15 2015 12:16AM
Credit: Alan Coopersmith
Vulnerable: X.org LibXfont 1.3.1
X.org LibXfont 1.2.2
X.org LibXfont 1.2.1
X.org LibXfont 1.2
X.org LibXfont 1.1
X.org LibXfont 1.4.4
X.org LibXfont 1.4.3
Ubuntu Ubuntu Linux 10.04 LTS
SuSE SUSE Linux Enterprise Server 11 SP2
+ Linux kernel 2.6.5
SuSE SUSE Linux Enterprise Desktop 11 SP2
+ Linux kernel 2.6.5
SuSE openSUSE 11.4
Slackware Slackware Linux 13.37
Slackware Slackware Linux 13.1
Slackware Slackware Linux 13.0
RedHat Enterprise Linux Desktop Workstation 5 client
Red Hat Enterprise Linux Workstation Optional 6
Red Hat Enterprise Linux Workstation 6
Red Hat Enterprise Linux Server Optional 6
Red Hat Enterprise Linux Server 6
Red Hat Enterprise Linux HPC Node Optional 6
Red Hat Enterprise Linux HPC Node 6
Red Hat Enterprise Linux Desktop Optional 6
Red Hat Enterprise Linux Desktop 6
Red Hat Enterprise Linux Desktop 5 client
Red Hat Enterprise Linux 5 Server
Oracle Enterprise Linux 6.2
Oracle Enterprise Linux 6
Gentoo Linux
Debian Linux 6.0 sparc
Debian Linux 6.0 s/390
Debian Linux 6.0 powerpc
Debian Linux 6.0 mips
Debian Linux 6.0 ia-64
Debian Linux 6.0 ia-32
Debian Linux 6.0 arm
Debian Linux 6.0 amd64
CentOS CentOS 5
Avaya Voice Portal 5.1.2
Avaya Voice Portal 5.1.1
Avaya Voice Portal 5.1 SP1
Avaya Voice Portal 5.1
Avaya Voice Portal 5.0 SP2
Avaya Voice Portal 5.0 SP1
Avaya Voice Portal 5.0
Avaya Proactive Contact 5.0
Avaya IQ 5.2
Avaya IQ 5.1.1
Avaya IQ 5.1
Avaya IQ 5
Avaya Communication Server 1000M Signaling Server 7.5
Avaya Communication Server 1000M Signaling Server 7.0
Avaya Communication Server 1000M Signaling Server 6.0
Avaya Communication Server 1000M 7.5
Avaya Communication Server 1000M 7.0
Avaya Communication Server 1000M 6.0
Avaya Communication Server 1000E Signaling Server 7.5
Avaya Communication Server 1000E Signaling Server 7.0
Avaya Communication Server 1000E Signaling Server 6.0
Avaya Communication Server 1000E 7.5
Avaya Communication Server 1000E 7.0
Avaya Communication Server 1000E 6.0
Avaya Aura System Platform 6.0.2
Avaya Aura System Platform 6.0.1
Avaya Aura System Platform 6.0 SP3
Avaya Aura System Platform 6.0 SP2
Avaya Aura System Platform 6.0
Avaya Aura System Platform 1.1
Avaya Aura System Manager 6.2
Avaya Aura System Manager 6.1.3
Avaya Aura System Manager 6.1.2
Avaya Aura System Manager 6.1.1
Avaya Aura System Manager 6.1 SP2
Avaya Aura System Manager 6.1 Sp1
Avaya Aura System Manager 6.1
Avaya Aura System Manager 6.0 SP1
Avaya Aura System Manager 6.0
Avaya Aura System Manager 5.2
Avaya Aura Session Manager 5.2 SP2
Avaya Aura Session Manager 5.2 SP1
Avaya Aura Session Manager 5.2
Avaya Aura Presence Services 6.1.1
Avaya Aura Presence Services 6.1
Avaya Aura Presence Services 6.0
Avaya Aura Experience Portal 6.0
Avaya Aura Application Server 5300 SIP Core 2.1
Avaya Aura Application Server 5300 SIP Core 2.0
Attachmate Reflection X 14.1
Attachmate Reflection X 14.0
AlienVault Open Source SIEM (OSSIM) 3.1
Not Vulnerable:

Discussion

X.Org libXfont BDF Font File Handling Stack Buffer Overflow Vulnerability

The 'libXfont' library is prone to a stack-based buffer-overflow vulnerability because it fails to properly bounds-check user-supplied data before copying it into an insufficiently sized buffer.

Attackers can exploit this issue to execute arbitrary code within the context of the application. Failed attacks may cause a denial-of-service condition.

Exploit / POC

X.Org libXfont BDF Font File Handling Stack Buffer Overflow Vulnerability

Attackers can use readily available tools to exploit this issue.

Core Security Technologies has developed a working commercial exploit for its CORE IMPACT product. This exploit is not otherwise publicly available or known to be circulating in the wild.

Solution / Fix

X.Org libXfont BDF Font File Handling Stack Buffer Overflow Vulnerability

Solution:
Updates are available. Please see the references or vendor advisory for more information.

References

X.Org libXfont BDF Font File Handling Stack Buffer Overflow Vulnerability

References:

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report