Home/CVE/PJSIP is a free and open source multimedia communication library written in C language implementing standard based proto
CVE

CVE-2022-21723

PJSIP is a free and open source multimedia communication library written in C language implementing standard based proto

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.

CRITICAL · CVSS 9.1 EPSS 0.00468
Act now
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-125Out-of-bounds Read
CWE-125Out-of-bounds Read
▤

Affected Products & Versions

6
teluu pjsip<= 2.11.1
asterisk certified asteriskall versions
sangoma asterisk>= 16.0.0 and < 16.24.1
sangoma asterisk>= 18.0.0 and < 18.10.1
sangoma asterisk>= 19.0.0 and < 19.2.1
debian linuxall versions
⚠

Public Exploits & PoCs

1
pocpacketstormsecurity.com · Asterisk-Project-Security-Advisory-AST-2022-006.htmlpacketstormsecurity.com
▣

Scoring & Timeline

9.1
CRITICAL · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Jan 2022 · 12:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
usnUSN-6422-1
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://seclists.org/fulldisclosure/2022/Mar/2Mailing ListPatchThird Party Advisory
https://github.com/pjsip/pjproject/commit/077b465c33f0aec05a49cd2ca456f9a1b112e896PatchThird Party Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pmPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00035.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
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