Stack-based buffer overflow in libXfont - CVE-2013-6462

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Main Vulnerability Database Vulnerabilities #VU32591

Stack-based buffer overflow in libXfont - CVE-2013-6462

Published: January 9, 2014 / Updated: July 28, 2020


Vulnerability identifier: #VU32591
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-6462
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the bdfReadCharacters function in bitmap/bdfread.c when processing a long string in a character name in a BDF font file. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

libXfont
Amazon Linux AMI
Gentoo Linux
Slackware Linux
libxfont (Alpine package)

How to mitigate CVE-2013-6462

Update to version 1.4.7.

libXfont - update to 1.4.7
libxfont (Alpine package) - update to 1.4.7-r0

External References

Related Security Bulletins