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Test ID:1.3.6.1.4.1.25623.1.0.146371
Category:Denial of Service
Title:Asterisk Multiple DoS Vulnerabilities (AST-2021-008, AST-2021-009)
Summary:Asterisk is prone to multiple denial of service (DoS); vulnerabilities.
Description:Summary:
Asterisk is prone to multiple denial of service (DoS)
vulnerabilities.

Vulnerability Insight:
The following vulnerabilities exist:

- CVE-2021-32558: If the IAX2 channel driver receives a packet that contains an unsupported media
format it can cause a crash to occur in Asterisk.

- CVE-2021-32686: Depending on the timing, it's possible for Asterisk to crash when using a TLS
connection if the underlying socket parent/listener gets destroyed during the handshake.

Affected Software/OS:
Asterisk Open Source 13.x, 16.x, 17.x, 18.x and 16.x Certified
Asterisk.

Solution:
Update to version 13.38.3, 16.19.1, 17.9.4, 18.5.1, 16.8-cert10
or later.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2021-32558
Debian Security Information: DSA-4999 (Google Search)
https://www.debian.org/security/2021/dsa-4999
http://seclists.org/fulldisclosure/2021/Jul/49
http://packetstormsecurity.com/files/163639/Asterisk-Project-Security-Advisory-AST-2021-008.html
https://downloads.asterisk.org/pub/security/AST-2021-008.html
https://issues.asterisk.org/jira/browse/ASTERISK-29392
https://lists.debian.org/debian-lts-announce/2021/08/msg00005.html
Common Vulnerability Exposure (CVE) ID: CVE-2021-32686
https://github.com/pjsip/pjproject/security/advisories/GHSA-cv8x-p47p-99wr
https://security.gentoo.org/glsa/202210-37
https://github.com/pjsip/pjproject/commit/d5f95aa066f878b0aef6a64e60b61e8626e664cd
https://github.com/pjsip/pjproject/pull/2716
https://github.com/pjsip/pjproject/releases/tag/2.11.1
https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
CopyrightCopyright (C) 2021 Greenbone AG

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