#VU46015 Permissions, Privileges, and Access Controls


Published: 2020-08-25 | Updated: 2020-08-26

Vulnerability identifier: #VU46015

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-15663

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Firefox ESR
Client/Desktop applications / Web browsers
Mozilla Firefox
Client/Desktop applications / Web browsers

Vendor: Mozilla

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due Mozilla Maintenance Service does not check if the updater.exe file has a valid signature before executing it with elevated privileges. A local user with ability to replace the updater.exe file file can execute arbitrary code with SYSTEM privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Firefox ESR: 78.0 - 78.1.0, 68.0 - 68.11.0, 60.0 - 60.9.0

Mozilla Firefox: 7.0.1 - 79.0


CPE

External links
http://www.mozilla.org/en-US/security/advisories/mfsa2020-38/
http://www.mozilla.org/en-US/security/advisories/mfsa2020-37/
http://www.mozilla.org/en-US/security/advisories/mfsa2020-36/


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


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