NetSight
critical9.8

CVE-2019-9796

A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration…

Impact

A use-after-free vulnerability can occur 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. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Affected products

VendorProductAffected versions
MozillaFirefox
before 60.6.0
before 66.0
MozillaThunderbird
before 60.6.0

Weakness classification

References