Remote code execution in Mozilla Firefox

Published: 2022-03-05 | Updated: 2023-01-31

Risk	Critical
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-26485 CVE-2022-26486
CWE-ID	CWE-416
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild.
Vulnerable software Subscribe	Mozilla Firefox Client/Desktop applications / Web browsers Firefox ESR Client/Desktop applications / Web browsers Firefox for Android Mobile applications / Apps for mobile phones
Vendor	Mozilla

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU61032

Risk: Critical

CVSSv3.1:

CVE-ID: CVE-2022-26485

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing XSLT parameter. A remote attacker can trick the victim to open a specially crafted web page, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 9.0.1 - 97.0.1

Firefox ESR: 91.0 - 91.6.0, 78.0 - 78.15.0

Firefox for Android: 79.0.0 - 97.2.0

CPE2.3

cpe:2.3:a:mozilla:mozilla_firefox:97.0.1:*:*:*:*:*:*:*

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2022-09/

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

2) Use-after-free

EUVDB-ID: #VU61033