Description

When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1656957

https://www.mozilla.org/security/advisories/mfsa2020-37/

https://www.mozilla.org/security/advisories/mfsa2020-40/

Details

Risk Information

CVSS v2

CVSS v3