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Date: Fri, 04 Mar 2022 20:16:59 +0000
From: "Asterisk Security Team" <security@...erisk.org>
To: fulldisclosure@...lists.org
Subject: [FD] AST-2022-006: pjproject: unconstrained malformed multipart SIP
message
Asterisk Project Security Advisory - AST-2022-006
Product Asterisk
Summary pjproject: unconstrained malformed multipart SIP
message
Nature of Advisory Out of bounds memory access
Susceptibility Remote unauthenticated sessions
Severity Minor
Exploits Known Yes
Reported On March 3, 2022
Reported By Sauw Ming
Posted On March 4, 2022
Last Updated On March 3, 2022
Advisory Contact kharwell AT sangoma DOT com
CVE Name CVE-2022-21723
Description If an incoming SIP message contains a malformed
multi-part body an out of bounds read access may
occur, which can result in undefined behavior. Note,
it���s currently uncertain if there is any externally
exploitable vector within Asterisk for this issue, but
providing this as a security issue out of caution.
Modules Affected bundled pjproject
Resolution If you use ���with-pjproject-bundled��� then upgrade to, or
install one of, the versions of Asterisk listed below.
Otherwise install the appropriate version of pjproject that
contains the patch.
Affected Versions
Product Release Series
Asterisk Open Source 16.x All versions
Asterisk Open Source 18.x All versions
Asterisk Open Source 19.x All versions
Certified Asterisk 16.x All versions
Corrected In
Product Release
Asterisk Open Source 16.24.1,18.10.1,19.2.1
Certified Asterisk 16.8-cert13
Patches
Patch URL Revision
https://downloads.digium.com/pub/security/AST-2022-006-16.diff Asterisk
16
https://downloads.digium.com/pub/security/AST-2022-006-18.diff Asterisk
18
https://downloads.digium.com/pub/security/AST-2022-006-19.diff Asterisk
19
https://downloads.digium.com/pub/security/AST-2022-006-16.8.diff Certified
Asterisk
16.8
Links https://issues.asterisk.org/jira/browse/ASTERISK-29945
https://downloads.asterisk.org/pub/security/AST-2022-006.html
https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pm
Asterisk Project Security Advisories are posted at
http://www.asterisk.org/security
This document may be superseded by later versions; if so, the latest
version will be posted at
https://downloads.digium.com/pub/security/AST-2022-006.pdf and
https://downloads.digium.com/pub/security/AST-2022-006.html
Revision History
Date Editor Revisions Made
March 3, 2022 Kevin Harwell Initial revision
Asterisk Project Security Advisory - AST-2022-006
Copyright �� 2022 Digium, Inc. All Rights Reserved.
Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.
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