Out-of-bounds write in Mozilla Firefox - CVE-2018-12379
Published: September 6, 2018
Vulnerability identifier: #VU14635
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2018-12379
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Mozilla Firefox
Detailed vulnerability description
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The vulnerability exists due to out-of-bounds write when the Mozilla Updater opens a MAR format file which contains a very long item filename. A local attacker can run the Mozilla Updater on the local system with the malicious MAR file, trigger memory corruption and execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2018-12379
Update to version 62.0.