description: 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.
problem types: Use-after-free with SMIL animation controller
affected:
{
product: Thunderbird
vendor: Mozilla
versions:
lessThan: 60.6, status: affected, version: unspecified, versionType: custom
}
{
product: Firefox ESR
vendor: Mozilla
versions:
lessThan: 60.6, status: affected, version: unspecified, versionType: custom
}
{
product: Firefox
vendor: Mozilla
versions:
lessThan: 66, status: affected, version: unspecified, versionType: custom
}
