Debian Security Advisory

DSA-5438-1 asterisk -- security update

Date Reported:
22 Jun 2023
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 1036697.
In Mitre's CVE dictionary: CVE-2023-27585.
More information:

A flaw was found in Asterisk, an Open Source Private Branch Exchange. A buffer overflow vulnerability affects users that use PJSIP DNS resolver. This vulnerability is related to CVE-2022-24793. The difference is that this issue is in parsing the query record `parse_query()`, while the issue in CVE-2022-24793 is in `parse_rr()`. A workaround is to disable DNS resolution in PJSIP config (by setting `nameserver_count` to zero) or use an external resolver implementation instead.

For the oldstable distribution (bullseye), this problem has been fixed in version 1:16.28.0~dfsg-0+deb11u3.

We recommend that you upgrade your asterisk packages.

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