critical
9.1
CWE
125
Advisory Published
Updated

CVE-2022-21723: Out-of-bounds read in multipart parsing in PJSIP

First published: Thu Jan 27 2022(Updated: )

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.

Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
Teluu PJSIP<=2.11.1
Asterisk Certified Asterisk=16.8.0
Asterisk Certified Asterisk=16.8.0-cert1
Asterisk Certified Asterisk=16.8.0-cert10
Asterisk Certified Asterisk=16.8.0-cert11
Asterisk Certified Asterisk=16.8.0-cert12
Asterisk Certified Asterisk=16.8.0-cert2
Asterisk Certified Asterisk=16.8.0-cert3
Asterisk Certified Asterisk=16.8.0-cert4
Asterisk Certified Asterisk=16.8.0-cert5
Asterisk Certified Asterisk=16.8.0-cert6
Asterisk Certified Asterisk=16.8.0-cert7
Asterisk Certified Asterisk=16.8.0-cert8
Asterisk Certified Asterisk=16.8.0-cert9
Sangoma Asterisk>=16.0.0<16.24.1
Sangoma Asterisk>=18.0.0<18.10.1
Sangoma Asterisk>=19.0.0<19.2.1
Debian Debian Linux=9.0
Debian Debian Linux=10.0
ubuntu/ring<20180228.1.503
20180228.1.503
ubuntu/ring<20190215.1.
20190215.1.
debian/asterisk
1:16.28.0~dfsg-0+deb10u4
1:16.28.0~dfsg-0+deb11u3
1:16.28.0~dfsg-0+deb11u4
1:20.6.0~dfsg+~cs6.13.40431414-2
debian/ring
20190215.1.f152c98~ds1-1+deb10u2
20230206.0~ds2-1.1
20231201.0~ds1-1

Remedy

http://seclists.org/fulldisclosure/2022/Mar/2

Remedy

https://github.com/pjsip/pjproject/commit/077b465c33f0aec05a49cd2ca456f9a1b112e896

Remedy

https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pm

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2022-21723?

    CVE-2022-21723 is a vulnerability in the PJSIP library that allows remote attackers to cause a denial of service (DoS) and potentially execute arbitrary code.

  • What is the severity of CVE-2022-21723?

    CVE-2022-21723 has a severity rating of 9.1 (Critical).

  • Which software versions are affected by CVE-2022-21723?

    Versions 2.11.1 and prior of Teluu Pjsip, Certified Asterisk 16.8.0, and Sangoma Asterisk 16.0.0 - 16.24.1, 18.0.0 - 18.10.1, and 19.0.0 - 19.2.1 are affected by CVE-2022-21723.

  • How can CVE-2022-21723 be exploited?

    CVE-2022-21723 can be exploited by sending a malformed multipart SIP message, which can lead to out-of-bounds read/write access and potential code execution.

  • Is there a fix for CVE-2022-21723?

    Yes, updating to the latest version of the affected software or applying the relevant patches provided by the vendors can fix CVE-2022-21723.

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