#VU27531 Permissions, Privileges, and Access Controls


Published: 2020-05-05

Vulnerability identifier: #VU27531

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12389

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

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

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due the Firefox content processes did not sufficiently lockdown access control for separate process types. A remote attacker can bypass implemented security restrictions and execute arbitrary code on the target system.

Note, this vulnerability affects Windows versions only.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 60.0 - 75.0

Firefox ESR: 68.0 - 68.7.0, 60.0 - 60.9.0


CPE

External links
http://www.mozilla.org/en-US/security/advisories/mfsa2020-16/
http://www.mozilla.org/en-US/security/advisories/mfsa2020-17/
http://bugzilla.mozilla.org/show_bug.cgi?id=1554110


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability