CVE-2021-37706
Estado: ModificadaCrítica (9.8)—
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 victim’s network may forge and send a specially crafted UDP (STUN) message that could remotely execute arbitrary code on the victim’s machine. Users are advised to upgrade as soon as possible. There are no known workarounds.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 9.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 4.58%
- Percentil entre todas las CVEs puntuadas: 91
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (4)
CWE
- CWE-191
- CWE-191
Referencias
- http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisory-AST-2022-004.html
- http://seclists.org/fulldisclosure/2022/Mar/0
- https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc8e865
- https://github.com/pjsip/pjproject/security/advisories/GHSA-2qpg-f6wf-w984
- https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
- https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
- https://security.gentoo.org/glsa/202210-37
- https://www.debian.org/security/2022/dsa-5285
- http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisory-AST-2022-004.html
- http://seclists.org/fulldisclosure/2022/Mar/0
- https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc8e865
- https://github.com/pjsip/pjproject/security/advisories/GHSA-2qpg-f6wf-w984
- https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
- https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
- https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html
- https://security.gentoo.org/glsa/202210-37
- https://www.debian.org/security/2022/dsa-5285
JSON original (NVD)
Mostrar
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