7.5
CVSSv3

CVE-2023-27585

Published: 14/03/2023 Updated: 30/08/2023
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 0

Vulnerability Summary

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.

Vulnerability Trend

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Vendor Advisories

Debian Bug report logs - #1036697 asterisk: CVE-2023-27585 Package: src:asterisk; Maintainer for src:asterisk is Debian VoIP Team <pkg-voip-maintainers@listsaliothdebianorg>; Reported by: Moritz Mühlenhoff <jmm@inutilorg> Date: Wed, 24 May 2023 12:54:06 UTC Severity: grave Tags: security, upstream Reply or ...
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 d ...