CVEvulnerability
CVE-2023-4577
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2023-09-11
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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.
Affected configurations
• mozilla firefox (< 117.0)
• mozilla firefox esr (< 115.2)
• mozilla thunderbird (< 115.2)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1847397 Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2023-34/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-36/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-38/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1847397 Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2023-34/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-36/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-38/ Vendor Advisory