CVEvulnerability
CVE-2023-6857
5.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2023-12-19
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
- Weaknesses
- CWE-362
Description
When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller than necessary.
*This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is unaffected.* This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
Affected configurations
• mozilla firefox (< 121.0)
• mozilla firefox esr (< 115.6)
• mozilla thunderbird (< 115.6)
• debian debian linux 10.0
• debian debian linux 11.0
• debian debian linux 12.0
Related
Weakness · CWE (1)
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1796023 Issue Tracking, Permissions Required
- https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202401-10 Third Party Advisory
- https://www.debian.org/security/2023/dsa-5581 Third Party Advisory
- https://www.debian.org/security/2023/dsa-5582 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-54/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-55/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-56/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1796023 Issue Tracking, Permissions Required
- https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202401-10 Third Party Advisory
- https://www.debian.org/security/2023/dsa-5581 Third Party Advisory
- https://www.debian.org/security/2023/dsa-5582 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-54/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-55/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-56/ Vendor Advisory