Heap-based buffer overflow in pjsip - CVE-2022-23537

Vulnerability identifier: #VU70432

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-23537

CWE-ID: CWE-122

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The vulnerability exists due to a boundary error when decoding STUN messages. A remote attacker can pass a specially crafted STUN message to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

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

pjsip
Debian Linux
Ubuntu
ring (Ubuntu package)
ring-daemon (Ubuntu package)
asterisk (Debian package)
jami (Ubuntu package)
jami-daemon (Ubuntu package)

Install update from vendor's website.

pjsip - update to 2.13.1
ring (Ubuntu package) - addressed in versions Ubuntu Pro, 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1
ring-daemon (Ubuntu package) - addressed in versions Ubuntu Pro, 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1
asterisk (Debian package) - update to 1:16.28.0~dfsg-0+deb11u2
jami (Ubuntu package) - addressed in versions 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1, 20230206.0~ds1-5ubuntu0.1, 20230206.0~ds2-1.3ubuntu0.1
jami-daemon (Ubuntu package) - addressed in versions 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1, 20230206.0~ds1-5ubuntu0.1, 20230206.0~ds2-1.3ubuntu0.1

• https://github.com/pjsip/pjproject/security/advisories/GHSA-9pfh-r8x4-w26w
• https://github.com/pjsip/pjproject/commit/d8440f4d711a654b511f50f79c0445b26f9dd1e1
• https://github.com/pjsip/pjproject/releases/tag/2.13.1

• Remote code execution in pjsip
• Debian update for asterisk
• Ubuntu update for ring
• Ubuntu update for ring