CVE-2017-7768 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Reference

http://www.securityfocus.com/bid/99057 http://www.securitytracker.com/id/1038689 https://bugzilla.mozilla.org/show_bug.cgi?id=1336979 https://www.mozilla.org/security/advisories/mfsa2017-15/ https://www.mozilla.org/security/advisories/mfsa2017-16/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.5