description: When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding attack. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
problem types: DoH did not filter IPv4 mapped IP Addresses
affected:
{
product: Firefox
vendor: Mozilla
versions:
status: affected, version: < 83
}
{
product: Firefox ESR
vendor: Mozilla
versions:
status: affected, version: < 78.5
}
{
product: Thunderbird
vendor: Mozilla
versions:
status: affected, version: < 78.5
}
