---
cve: "CVE-2022-21723"
severity: "CRITICAL"
cvss: 9.1
epss: "4.5%"
vendor: "pjsip"
kev: false
exploited: false
published: "2022-01-27 00:15:07"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T05:21:50+02:00"
---

# CVE-2022-21723

> 9.1 CRITICAL · 🧪 PoC

## Beschreibung

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 versions 2.11.1 and prior, parsing an incoming SIP message that contains a malformed multipart can potentially cause out-of-bound read access. This issue affects all PJSIP users that accept SIP multipart. The patch is available as commit in the `master` branch. There are no known workarounds.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- c28961a7d88cf065f693d1ea412c3e2b35e6d18e (Commit)
- 4cf4f5f7076125bc649727540de5922c21e0558f (Commit)

## Referenzen

- <https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pm>
- <https://github.com/pjsip/pjproject/commit/077b465c33f0aec05a49cd2ca456f9a1b112e896>
- <http://seclists.org/fulldisclosure/2022/Mar/2>
- <http://packetstormsecurity.com/files/166227/Asterisk-Project-Security-Advisory-AST-2022-006.html>
- <https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html>
- <https://security.gentoo.org/glsa/202210-37>
- <https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html>
- <https://www.debian.org/security/2022/dsa-5285>
- <https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html>
- <https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2022-21723) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_