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CVE-2022-21722— Potential out-of-bound read during RTP/RTCP parsing in PJSIP

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 2.11.1及之前版本存在安全漏洞，有多种情况下，某些传入RTP/RTCP数据包可能会导致越界读取访问。此问题影响所有使用PJMEDIA并接受传入RTP/RTCP的用户。

CVSS 9.1 · Critical EPSS 2.34% · P83

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-21722

Vulnerability Information
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Vulnerability Title
Potential out-of-bound read during RTP/RTCP 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 version 2.11.1 and prior, there are various cases where it is possible that certain incoming RTP/RTCP packets can potentially cause out-of-bound read access. This issue affects all users that use PJMEDIA and accept incoming RTP/RTCP. A patch is available as a 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及之前版本存在安全漏洞，有多种情况下，某些传入RTP/RTCP数据包可能会导致越界读取访问。此问题影响所有使用PJMEDIA并接受传入RTP/RTCP的用户。
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

Vendor Product Affected Versions CPE Subscribe
pjsip pjproject <= 2.11.1 -

II. Public POCs for CVE-2022-21722

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III. Intelligence Information for CVE-2022-21722

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Patches & Fixes for CVE-2022-21722 (1)

Vendor Advisories for CVE-2022-21722 (3)

Mailing List Discussions for CVE-2022-21722 (3)

IV. Related Vulnerabilities

Same product: pjproject
Same vendor: pjsip
Same weakness: CWE-125

V. Comments for CVE-2022-21722

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