Note:
This project will be discontinued after December 13, 2021. [more]
2020-04-24
Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
| Products | Firefox, Firefox_esr, Thunderbird |
| Type | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (CWE-362) Use After Free (CWE-416) |
| First patch | - None (likely due to unavailable code) |
| Links |
• https://bugzilla.mozilla.org/show_bug.cgi?id=1620818
• https://usn.ubuntu.com/4335-1/ • https://www.mozilla.org/security/advisories/mfsa2020-11/ • https://www.mozilla.org/security/advisories/mfsa2020-14/ |