description: An out-of-bounds read occurs when applying style rules to pseudo-elements, such as ::first-line, using cached style data. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
problem types: Out-of-bounds read with cached style data and pseudo-elements
affected:
{
product: Thunderbird
vendor: Mozilla
versions:
lessThan: 52.3, status: affected, version: unspecified, versionType: custom
}
{
product: Firefox ESR
vendor: Mozilla
versions:
lessThan: 52.3, status: affected, version: unspecified, versionType: custom
}
{
product: Firefox
vendor: Mozilla
versions:
lessThan: 55, status: affected, version: unspecified, versionType: custom
}
