{"id":"UBUNTU-CVE-2023-27585","details":"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.","modified":"2026-04-22T16:39:41.322809Z","published":"2023-03-14T17:15:00Z","related":["USN-6422-1","USN-6422-2"],"upstream":["CVE-2023-27585"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-27585"},{"type":"REPORT","url":"https://github.com/pjsip/pjproject/commit/d1c5e4da5bae7f220bc30719888bb389c905c0c5"},{"type":"REPORT","url":"https://www.pjsip.org/pjlib-util/docs/html/group__PJ__DNS__RESOLVER.htm"},{"type":"REPORT","url":"https://github.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfr"},{"type":"REPORT","url":"https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6422-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6422-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-27585"}],"affected":[{"package":{"name":"pjproject","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/pjproject@2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.0.0.ast20130823-1","2.1.0.0.ast20130823-1+deb8u1build0.16.04.1","2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libpj2","binary_version":"2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"},{"binary_name":"libpjlib-util2","binary_version":"2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"},{"binary_name":"libpjmedia-audiodev2","binary_version":"2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"},{"binary_name":"libpjmedia-codec2","binary_version":"2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"},{"binary_name":"libpjmedia-videodev2","binary_version":"2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"},{"binary_name":"libpjmedia2","binary_version":"2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"},{"binary_name":"libpjnath2","binary_version":"2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"},{"binary_name":"libpjsip-simple2","binary_version":"2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"},{"binary_name":"libpjsip-ua2","binary_version":"2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"},{"binary_name":"libpjsip2","binary_version":"2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"},{"binary_name":"libpjsua2","binary_version":"2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-27585.json"}},{"package":{"name":"pjproject","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/pjproject@2.7.2~dfsg-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6~dfsg-2","2.7~dfsg-1","2.7.1~dfsg-1","2.7.1~dfsg-1build1","2.7.2~dfsg-1","2.7.2~dfsg-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libpj2","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"},{"binary_name":"libpjlib-util2","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"},{"binary_name":"libpjmedia-audiodev2","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"},{"binary_name":"libpjmedia-codec2","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"},{"binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1","binary_name":"libpjmedia-videodev2"},{"binary_name":"libpjmedia2","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"},{"binary_name":"libpjnath2","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"},{"binary_name":"libpjsip-simple2","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"},{"binary_name":"libpjsip-ua2","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"},{"binary_name":"libpjsip2","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"},{"binary_name":"libpjsua2","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"},{"binary_name":"libpjsua2-2v5","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"},{"binary_name":"python-pjproject","binary_version":"2.7.2~dfsg-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-27585.json"}},{"package":{"name":"ring","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/ring@20180228.1.503da2b~ds1-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20180228.1.503da2b~ds1-1ubuntu0.1~esm1"}]}],"versions":["20170803.2.5fcfe3f~dfsg1-1","20171024.1.eadbdeb~ds1-1","20171129.2.cf5bbff~ds1-1","20171129.2.cf5bbff~ds1-2","20180119.1.9e06f94~ds1-1","20180119.1.9e06f94~ds1-3","20180222.1.7bffde2~ds2-2","20180228.1.503da2b~ds1-1","20180228.1.503da2b~ds1-1build1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"20180228.1.503da2b~ds1-1ubuntu0.1~esm1","binary_name":"ring"},{"binary_version":"20180228.1.503da2b~ds1-1ubuntu0.1~esm1","binary_name":"ring-daemon"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-27585.json"}},{"package":{"name":"ring","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ring@20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1"}]}],"versions":["20190215.1.f152c98~ds1-1","20190215.1.f152c98~ds1-1build1","20190215.1.f152c98~ds1-1build2"],"ecosystem_specific":{"availability":"No subscription 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