The Mozilla Maintenance Service can be invoked by an unprivileged user to read 32 bytes of any arbitrary file on the local system by convincing the service that it is reading a status file provided by the Mozilla Windows Updater. The Mozilla Maintenance Service executes with privileged access, bypassing system protections against unprivileged users. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 52.2 and Firefox < 54.
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/bid/99057 | third party advisory vdb entry |
| https://www.mozilla.org/security/advisories/mfsa2017-15/ | vendor advisory |
| http://www.securitytracker.com/id/1038689 | third party advisory vdb entry |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1336979 | vendor advisory issue tracking |
| https://www.mozilla.org/security/advisories/mfsa2017-16/ | vendor advisory |