Bug#1036697: asterisk: CVE-2023-27585

[Moritz Mühlenhoff]

Source: asterisk
X-Debbugs-CC: team at security.debian.org
Severity: grave
Tags: security

Hi,

The following vulnerability was published for asterisk.

CVE-2023-27585[0]:
| PJSIP is a free and open source multimedia communication library
| written in C. A buffer overflow vulnerability in versions 2.13 and
| prior affects applications that use PJSIP DNS resolver. It doesn't
| affect PJSIP users who do not utilise 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 patch is available as
| commit `d1c5e4d` in the `master` branch. A workaround is to disable
| DNS resolution in PJSIP config (by setting `nameserver_count` to zero)
| or use an external resolver implementation instead.

https://github.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfr
https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4
https://github.com/pjsip/pjproject/commit/d1c5e4da5bae7f220bc30719888bb389c905c0c5


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-27585
    https://www.cve.org/CVERecord?id=CVE-2023-27585

Please adjust the affected versions in the BTS as needed.