Vulnerability identifier: #VU69571

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-31031

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
pjsip
Universal components / Libraries / Libraries used by multiple products

Vendor: pjsip

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when parsing message as a STUN client. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

pjsip: 2.12 - 2.12.1

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External links
http://github.com/pjsip/pjproject/commit/450baca94f475345542c6953832650c390889202
http://github.com/pjsip/pjproject/security/advisories/GHSA-26j7-ww69-c4qj
http://security.gentoo.org/glsa/202210-37

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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.