| Name | CVE-2023-4577 |
| Description | When `UpdateRegExpStatics` attempted to access `initialStringHeap` it could already have been garbage collected prior to entering the function, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| firefox (PTS) | sid | 142.0.1-1 | fixed |
| firefox-esr (PTS) | bullseye | 115.14.0esr-1~deb11u1 | fixed |
| bullseye (security) | 128.14.0esr-1~deb11u1 | fixed |
| bookworm, bookworm (security) | 128.14.0esr-1~deb12u1 | fixed |
| trixie (security), trixie | 128.14.0esr-1~deb13u1 | fixed |
| forky, sid | 128.14.0esr-1 | fixed |
| thunderbird (PTS) | bullseye | 1:115.12.0-1~deb11u1 | fixed |
| bullseye (security) | 1:128.14.0esr-1~deb11u1 | fixed |
| bookworm, bookworm (security) | 1:128.14.0esr-1~deb12u1 | fixed |
| trixie (security), trixie | 1:128.14.0esr-1~deb13u1 | fixed |
| forky, sid | 1:128.14.0esr-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bookworm] - firefox-esr <not-affected> (ESR 102 not affected)
[bullseye] - firefox-esr <not-affected> (ESR 102 not affected)
[buster] - firefox-esr <not-affected> (ESR 102 not affected)
[bookworm] - thunderbird <not-affected> (ESR 102 not affected)
[bullseye] - thunderbird <not-affected> (ESR 102 not affected)
[buster] - thunderbird <not-affected> (ESR 102 not affected)
https://www.mozilla.org/en-US/security/advisories/mfsa2023-34/#CVE-2023-4577
https://www.mozilla.org/en-US/security/advisories/mfsa2023-35/#CVE-2023-4577
https://www.mozilla.org/en-US/security/advisories/mfsa2023-36/#CVE-2023-4577
https://www.mozilla.org/en-US/security/advisories/mfsa2023-38/#CVE-2023-4577