CVE-2021-37706

Description

PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In affected versions if the incoming STUN message contains an ERROR-CODE attribute, the header length is not checked before performing a subtraction operation, potentially resulting in an integer underflow scenario. This issue affects all users that use STUN. A malicious actor located within the victims network may forge and send a specially crafted UDP (STUN) message that could remotely execute arbitrary code on the victims machine. Users are advised to upgrade as soon as possible. There are no known workarounds.

Risk Information

Base Score

9.8

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score

Exploitation Probability

0.243

Associated Vulnerability

Vulnerability	OS Platform
asterisk security update(DSA-5285-1) asterisk_16.28.0~dfsg-0+deb11u1_amd64.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-1) jami_20230206.0~ds1-5ubuntu0.1_amd64.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-1) jami_20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1_amd64.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-1) ring_20180228.1.503da2b~ds1-1build1_i386.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-1) ring_20180228.1.503da2b~ds1-1build1_amd64.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-1) ring_20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1_all.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-1) jami-daemon_20230206.0~ds1-5ubuntu0.1_amd64.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-1) jami-daemon_20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1_amd64.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-1) ring-daemon_20180228.1.503da2b~ds1-1build1_i386.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-1) ring-daemon_20180228.1.503da2b~ds1-1build1_amd64.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-1) ring-daemon_20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1_all.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-2) jami_20230206.0~ds2-1.3ubuntu0.1_amd64.deb	Linux
Secure and distributed voice, video, and chat platform (USN-6422-2) jami-daemon_20230206.0~ds2-1.3ubuntu0.1_amd64.deb	Linux
CVE-2021-37706	NCM

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234