CVE-2022-23537— PJSIP vulnerable to heap buffer overflow when decoding STUN message
Quick assessment
Affected
pjsip pjproject
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
PJSIP是一个免费和开源的多媒体通信库，用C语言编写，实现基于标准的协议，如SIP, SDP, RTP, STUN, TURN，和ICE。 PJSIP 2.13.1之前版本存在安全漏洞，该漏洞源于解析具有未知属性的特制STUN消息时，可能会发生缓冲区溢出。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2022-23537
Vulnerability Information
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Vulnerability Title
PJSIP vulnerable to heap buffer overflow when decoding STUN message
Source: CVE Program / CVE List V5
Vulnerability 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. Buffer overread is possible when parsing a specially crafted STUN message with unknown attribute. The vulnerability affects applications that uses STUN including PJNATH and PJSUA-LIB. The patch is available as a commit in the master branch (2.13.1).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
PJSIP 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PJSIP是一个免费和开源的多媒体通信库，用C语言编写，实现基于标准的协议，如SIP, SDP, RTP, STUN, TURN，和ICE。 PJSIP 2.13.1之前版本存在安全漏洞，该漏洞源于解析具有未知属性的特制STUN消息时，可能会发生缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2022-23537
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Patches & Fixes for CVE-2022-23537 (1)
Vendor Advisories for CVE-2022-23537 (1)
-
https://github.com/pjsip/pjproject/security/advisories/GHSA-9pfh-r8x4-w26w x_refsource_CONFIRM
Mailing List Discussions for CVE-2022-23537 (1)
IV. Related Vulnerabilities
Same product: pjproject
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CVE-2026-84975
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PJSIP: Heap overflow in the HTTP client
Same vendor: pjsip
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CVE-2026-84975
PJSIP: TLS server identity (hostname) verification bypass vi -
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PJSIP: Heap buffer overflow in the AVI parser -
CVE-2026-57166
PJSIP: Pre-authentication overflow in the telnet CLI error -
CVE-2026-57165
PJSIP: Pre-authentication overflow in the telnet CLI history -
CVE-2026-57164
PJSIP: Heap overflow in the HTTP client
Same weakness: CWE-122
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V. Comments for CVE-2022-23537
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