Privilege escalation in Firefox ESR - CVE-2017-7767
Published: June 14, 2017 / Updated: May 26, 2020
Vulnerability identifier: #VU7078
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-7767
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The vulnerability exists in the Mozilla Maintenance Service on Windows due to improper input validation. A local attacker can overwrite arbitrary files with junk data using the Mozilla Windows Updater and gain system privileges.
Successful exploitation of the vulnerability may result in system compromise.
The vulnerability exists in the Mozilla Maintenance Service on Windows due to improper input validation. A local attacker can overwrite arbitrary files with junk data using the Mozilla Windows Updater and gain system privileges.
Successful exploitation of the vulnerability may result in system compromise.
Affected software
Firefox ESR
Mozilla Firefox
Opensuse
Mozilla Firefox
Opensuse
How to mitigate CVE-2017-7767
Update to version 52.2.
Firefox ESR - update to 52.2.0
Mozilla Firefox - update to 54.0
Mozilla Firefox - update to 54.0