#VU59372 Use-after-free in Mozilla Firefox and Firefox ESR - CVE-2022-22737

Vulnerability identifier: #VU59372

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-22737

CWE-ID: CWE-416

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 compromise the affected system.

The vulnerability exists due to a race condition playing audio files. A remote attacker can construct a specially crafted audio skin, trigger a use-after-free error and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 80.0 - 95.0.2

Firefox ESR: 91.0 - 91.4.1

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External links
https://www.mozilla.org/en-US/security/advisories/mfsa2022-01/
https://www.mozilla.org/en-US/security/advisories/mfsa2022-02/

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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.