medium5.3
CVE-2023-6857
When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller than necessary.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox | before 121.0 |
| Mozilla | Firefox Esr | before 115.6 |
| Mozilla | Thunderbird | before 115.6 |
| Debian | Debian Linux | Versions 10.0, 11.0, 12.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://bugzilla.mozilla.org/show_bug.cgi?id=1796023
- https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html
- https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html
- https://security.gentoo.org/glsa/202401-10
- https://www.debian.org/security/2023/dsa-5581
- https://www.debian.org/security/2023/dsa-5582
- https://www.mozilla.org/security/advisories/mfsa2023-54/
- https://www.mozilla.org/security/advisories/mfsa2023-55/
- https://www.mozilla.org/security/advisories/mfsa2023-56/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1796023
- https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html
- https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html
- https://security.gentoo.org/glsa/202401-10
- https://www.debian.org/security/2023/dsa-5581
- https://www.debian.org/security/2023/dsa-5582
- https://www.mozilla.org/security/advisories/mfsa2023-54/
- https://www.mozilla.org/security/advisories/mfsa2023-55/
- https://www.mozilla.org/security/advisories/mfsa2023-56/