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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Mozilla Firefox ESR
unspecified to < 68.8affected
Mozilla Firefox
unspecified to < 76affected
Mozilla Thunderbird
unspecified to < 68.8.0affected
References
- https://www.mozilla.org/security/advisories/mfsa2020-18/ ↗
- https://www.mozilla.org/security/advisories/mfsa2020-16/ ↗
- https://www.mozilla.org/security/advisories/mfsa2020-17/ ↗
- https://bugzilla.mozilla.org/show_bug.cgi?id=1545345 ↗
- https://usn.ubuntu.com/4373-1/ ↗
- https://security.gentoo.org/glsa/202005-03 ↗
- https://security.gentoo.org/glsa/202005-04 ↗