CVEvulnerability
CVE-2020-12387
8.1 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-05-26
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-362, CWE-416
Description
A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
Affected configurations
• mozilla firefox (< 76.0)
• mozilla firefox esr (< 68.8.0)
• mozilla thunderbird (< 68.8.0)
Related
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1545345 Issue Tracking, Permissions Required
- https://security.gentoo.org/glsa/202005-03 Third Party Advisory
- https://security.gentoo.org/glsa/202005-04 Third Party Advisory
- https://usn.ubuntu.com/4373-1/ Broken Link
- https://www.mozilla.org/security/advisories/mfsa2020-16/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-17/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-18/ Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1545345 Issue Tracking, Permissions Required
- https://security.gentoo.org/glsa/202005-03 Third Party Advisory
- https://security.gentoo.org/glsa/202005-04 Third Party Advisory
- https://usn.ubuntu.com/4373-1/ Broken Link
- https://www.mozilla.org/security/advisories/mfsa2020-16/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-17/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-18/ Third Party Advisory