description: By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
problem types: Unintended access to a privileged JSONView object
affected:
{
product: Firefox
vendor: Mozilla
versions:
status: affected, version: before 70
}
{
product: Thunderbird
vendor: Mozilla
versions:
status: affected, version: before 68.2
}
{
product: Firefox ESR
vendor: Mozilla
versions:
status: affected, version: before 68.2
}
