Debian Security Advisory

DSA-5285-1 asterisk -- security update

Date Reported:
17 Nov 2022
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 1014998, Bug 1018073, Bug 1014976.
In Mitre's CVE dictionary: CVE-2021-37706, CVE-2021-43299, CVE-2021-43300, CVE-2021-43301, CVE-2021-43302, CVE-2021-43303, CVE-2021-43804, CVE-2021-43845, CVE-2021-46837, CVE-2022-21722, CVE-2022-21723, CVE-2022-23608, CVE-2022-24763, CVE-2022-24764, CVE-2022-24786, CVE-2022-24792, CVE-2022-24793, CVE-2022-26498, CVE-2022-26499, CVE-2022-26651.
More information:

Multiple security vulnerabilities have been found in Asterisk, an Open Source Private Branch Exchange. Buffer overflows and other programming errors could be exploited for information disclosure or the execution of arbitrary code.

Special care should be taken when upgrading to this new upstream release. Some configuration files and options have changed in order to remedy certain security vulnerabilities. Most notably the pjsip TLS listener only accepts TLSv1.3 connections in the default configuration now. This can be reverted by adding method=tlsv1_2 to the transport in pjsip.conf. See also

For the stable distribution (bullseye), these problems have been fixed in version 1:16.28.0~dfsg-0+deb11u1.

We recommend that you upgrade your asterisk packages.

For the detailed security status of asterisk please refer to its security tracker page at: