description: When the Mozilla Updater is run, if the Updater's log file in the working directory points to a hardlink, data can be appended to an arbitrary local file. This vulnerability requires local system access. Note: this issue only affects Windows operating systems. This vulnerability affects Firefox ESR < 45.5 and Firefox < 50.
problem types: Write to arbitrary file with Mozilla Updater and Maintenance Service using updater.log hardlink
affected:
{
product: Firefox ESR
vendor: Mozilla
versions:
lessThan: 45.5, status: affected, version: unspecified, versionType: custom
}
{
product: Firefox
vendor: Mozilla
versions:
lessThan: 50, status: affected, version: unspecified, versionType: custom
}
