CVE-2023-27585 Information

Description

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. 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.

Reference

https://github.com/pjsip/pjproject/commit/d1c5e4da5bae7f220bc30719888bb389c905c0c5 https://www.pjsip.org/pjlib-util/docs/html/group__PJ__DNS__RESOLVER.htm https://github.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfr https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4