description: A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by pointing the service at an update file on a malicious SMB server. The update file can be replaced after the signature check, before the use, because the write-lock requested by the service does not work on a SMB server.
*Note: This attack requires local system access and only affects Windows. Other operating systems are not affected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
problem types: Mozilla Maintenance Service Write-lock bypass
affected:
{
defaultStatus: unaffected
product: Firefox
vendor: Mozilla
versions:
lessThan: 112, status: affected, version: unspecified, versionType: custom
}
{
defaultStatus: unaffected
product: Firefox ESR
vendor: Mozilla
versions:
lessThan: 102.10, status: affected, version: unspecified, versionType: custom
}
{
defaultStatus: unaffected
product: Thunderbird
vendor: Mozilla
versions:
lessThan: 102.10, status: affected, version: unspecified, versionType: custom
}
