CVE-2022-21723— Out-of-bounds read in multipart parsing in PJSIP
Quick assessment
Affected
pjsip pjproject
Exploitation
High exploitation probability; assess promptly
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 2.11.1及之前版本存在缓冲区错误漏洞，解析包含格式错误的多部分的传入SIP消息可能会导致越界读取访问。此问题影响所有接受SIP multipart的PJSIP用户。
Possible ATT&CK Techniques 1 AI
T1200 · Hardware Additions
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I. Basic Information for CVE-2022-21723
Vulnerability Information
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Vulnerability Title
Out-of-bounds read in multipart parsing in PJSIP
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. 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
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 2.11.1及之前版本存在缓冲区错误漏洞，解析包含格式错误的多部分的传入SIP消息可能会导致越界读取访问。此问题影响所有接受SIP multipart的PJSIP用户。
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-2022-21723
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Patches & Fixes for CVE-2022-21723 (1)
Vendor Advisories for CVE-2022-21723 (3)
-
https://www.debian.org/security/2022/dsa-5285 vendor-advisory
-
https://security.gentoo.org/glsa/202210-37 vendor-advisory
Exploits & Public PoCs for CVE-2022-21723 (1)
Mailing List Discussions for CVE-2022-21723 (4)
IV. Related Vulnerabilities
Same product: pjproject
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CVE-2026-84975
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CVE-2026-77396
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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 vendor: pjsip
-
CVE-2026-84975
PJSIP: TLS server identity (hostname) verification bypass vi -
CVE-2026-77396
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-125
-
CVE-2026-107837
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MariaDB: mysql_json plugin OOB reads -
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MariaDB: `qc_info` plugin can do OOB reads if query contains -
CVE-2026-108103
Open5GS through 2.8.0 Heap Out-of-Bounds Read via PFCP Dropp
V. Comments for CVE-2022-21723
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