CVE-2019-9796

Source
Severity High
Remote Yes
Type Arbitrary code execution
Description
A use-after-free vulnerability can occur in Firefox before 66.0 when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is later freed with the removal of the animation controller element, the refresh driver incorrectly leaves a dangling pointer to the driver's observer array.
Group Package Affected Fixed Severity Status Ticket
AVG-925 firefox 65.0.2-1 66.0-1 Critical Fixed
Date Advisory Group Package Severity Description
22 Mar 2019 ASA-201903-11 AVG-925 firefox Critical multiple issues
References
https://www.mozilla.org/en-US/security/advisories/mfsa2019-07/#CVE-2019-9796
https://bugzilla.mozilla.org/show_bug.cgi?id=1531277