Debian Security Advisory
DLA-3394-1 asterisk -- LTS security update
- Date Reported:
- 19 Apr 2023
- Affected Packages:
- Security database references:
- 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 Debian 10 buster, this problem has been fixed in version 1:16.28.0~dfsg-0+deb10u3.
We recommend that you upgrade your asterisk packages.
For the detailed security status of asterisk please refer to its security tracker page at: https://security-tracker.debian.org/tracker/asterisk
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS