description: If a compromised content process sent an unexpected number of WebAuthN Extensions in a Register command to the parent process, an out of bounds write would have occurred leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8.
problem types: Out of bounds write due to unexpected WebAuthN Extensions
affected:
{
vendor: Mozilla
product: Thunderbird
versions:
version: unspecified, lessThan: 91.8, status: affected, versionType: custom
}
{
vendor: Mozilla
product: Firefox
versions:
version: unspecified, lessThan: 99, status: affected, versionType: custom
}
{
vendor: Mozilla
product: Firefox ESR
versions:
version: unspecified, lessThan: 91.8, status: affected, versionType: custom
}
