{"id":"CVE-2021-32686","aliases":["ALPINE-CVE-2021-32686","DEBIAN-CVE-2021-32686","DLA-2962-1","DLA-3887-1","DSA-4999-1","EUVD-2021-19490","GHSA-cv8x-p47p-99wr","MGASA-2021-0559","UBUNTU-CVE-2021-32686"],"status":"published","title":"Denial of Service in PJSIP","description":"PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. They cause a crash, resulting in a denial of service. These are fixed in version 2.11.1.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.02065,"percentile":0.81657,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-362"],"published":"2021-07-23T00:00:00Z","modified":"2026-10-23T18:03:14Z","fixes":[{"ecosystem":"Alpine:v3.14","package":"pjproject","fixed_in":["2.11.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"pjproject","fixed_in":["2.11.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"pjproject","fixed_in":["2.11.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"pjproject","fixed_in":["2.11.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"pjproject","fixed_in":["2.11.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"pjproject","fixed_in":["2.11.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"pjproject","fixed_in":["2.11.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"pjproject","fixed_in":["2.11.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"pjproject","fixed_in":["2.11.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"pjproject","fixed_in":["2.11.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"pjproject","fixed_in":["2.11.1-r0"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"asterisk","fixed_in":["1:16.16.1~dfsg-2"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"ring","fixed_in":["20230206.0~ds1-1"],"sources":["osv"]},{"ecosystem":"Mageia:8","package":"pjproject","fixed_in":["2.10-5.3.mga8"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"pjproject","fixed_in":["2.7.2~dfsg-1ubuntu0.1~esm1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.14","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.15","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-r0"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"asterisk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:16.16.1~dfsg-2"}]}],"versions":["0.1.11-3","0.1.11-3woody1","1:1.0.5-2","1:1.0.5-4","1:1.0.6-1","1:1.0.6-2","1:1.0.7-1","1:1.0.7.dfsg.1-1","1:1.0.7.dfsg.1-2","1:1.0.7.dfsg.1-2sarge1","1:1.0.7.dfsg.1-2sarge2","1:1.0.7.dfsg.1-2sarge3","1:1.0.7.dfsg.1-2sarge4","1:1.0.7.dfsg.1-2sarge5","1:1.0.7.dfsg.1-2sarge6","1:1.0.9.dfsg-1","1:1.0.9.dfsg-3","1:1.0.9.dfsg-4","1:1.0.9.dfsg-5","1:1.0.9.dfsg-6","1:1.2.0-beta1.dfsg-1","1:1.2.0-beta2.dfsg-1","1:1.2.0-beta2.dfsg-2","1:1.2.0-beta2.dfsg-3","1:1.2.0-rc1.dfsg-1","1:1.2.0-rc2.dfsg-1","1:1.2.0.dfsg-1","1:1.2.0.dfsg-2","1:1.2.0.dfsg-3","1:1.2.0.dfsg-4","1:1.2.0.dfsg-5","1:1.2.0.dfsg-6","1:1.2.1.dfsg-1","1:1.2.1.dfsg-2","1:1.2.1.dfsg-3","1:1.2.10.dfsg-1","1:1.2.10.dfsg-1bpo1","1:1.2.10.dfsg-2","1:1.2.10.dfsg-3","1:1.2.11.dfsg-1","1:1.2.12.1.dfsg-1","1:1.2.13~dfsg-1","1:1.2.13~dfsg-2","1:1.2.13~dfsg-2etch1","1:1.2.13~dfsg-2etch2","1:1.2.13~dfsg-2etch3","1:1.2.13~dfsg-2etch4","1:1.2.14~dfsg-1","1:1.2.14~dfsg-2","1:1.2.14~dfsg-3","1:1.2.14~dfsg-4","1:1.2.15~dfsg-1","1:1.2.16~dfsg-1","1:1.2.17~dfsg-1","1:1.2.4.dfsg-1","1:1.2.4.dfsg-2","1:1.2.4.dfsg-3","1:1.2.4.dfsg-4","1:1.2.4.dfsg-5","1:1.2.4.dfsg-6","1:1.2.4.dfsg-6+b1","1:1.2.4.dfsg-7","1:1.2.7.1.dfsg-1","1:1.2.7.1.dfsg-2","1:1.2.7.1.dfsg-3","1:1.2.9.1.dfsg-1","1:1.4.10~dfsg-1","1:1.4.11~dfsg-1","1:1.4.11~dfsg-2","1:1.4.11~dfsg-3","1:1.4.11~dfsg-4","1:1.4.13~dfsg-1","1:1.4.15~dfsg-1","1:1.4.16.2~dfsg-1","1:1.4.16.2~dfsg-2","1:1.4.17~dfsg-1","1:1.4.17~dfsg-2","1:1.4.18.1~dfsg-1","1:1.4.18~dfsg-1","1:1.4.19.1~dfsg-1","1:1.4.20~dfsg-1","1:1.4.21.1~dfsg-1","1:1.4.21.2~dfsg-1","1:1.4.21.2~dfsg-2","1:1.4.21.2~dfsg-3","1:1.4.21.2~dfsg-3+lenny1","1:1.4.21.2~dfsg-3+lenny2","1:1.4.21.2~dfsg-3+lenny2.1","1:1.4.21.2~dfsg-3+lenny3","1:1.4.21.2~dfsg-3+lenny5","1:1.4.21.2~dfsg-3+lenny6","1:1.4.21.2~dfsg-3.1","1:1.4.2~dfsg-1","1:1.4.2~dfsg-2","1:1.4.2~dfsg-3","1:1.4.2~dfsg-4","1:1.4.2~dfsg-5","1:1.4.3~dfsg-1","1:1.4.4~dfsg-1","1:1.4.4~dfsg-2","1:1.4.4~dfsg-3","1:1.4.5~dfsg-1","1:1.4.6~dfsg-1","1:1.4.8~dfsg-1","1:1.4.8~dfsg-2","1:1.4.9~dfsg-1","1:1.6.1.0~dfsg-1","1:1.6.1.0~dfsg~rc3-1","1:1.6.2.0-1","1:1.6.2.0~dfsg~beta3-1","1:1.6.2.0~dfsg~rc1-1","1:1.6.2.0~rc3-1","1:1.6.2.0~rc3-2","1:1.6.2.0~rc6-1","1:1.6.2.0~rc7-1","1:1.6.2.2-1","1:1.6.2.6-1","1:1.6.2.7-1","1:1.6.2.9-1","1:1.6.2.9-1~bpo50+1","1:1.6.2.9-1~bpo50+2","1:1.6.2.9-1~bpo50+3","1:1.6.2.9-2","1:1.6.2.9-2+squeeze1","1:1.6.2.9-2+squeeze10","1:1.6.2.9-2+squeeze11","1:1.6.2.9-2+squeeze12","1:1.6.2.9-2+squeeze2","1:1.6.2.9-2+squeeze3","1:1.6.2.9-2+squeeze4","1:1.6.2.9-2+squeeze5","1:1.6.2.9-2+squeeze6","1:1.6.2.9-2+squeeze7","1:1.6.2.9-2+squeeze8","1:1.6.2.9-2+squeeze9","1:1.8.10.0~dfsg-1","1:1.8.10.1~dfsg-1","1:1.8.11.1~dfsg-1","1:1.8.13.0~dfsg-1","1:1.8.13.0~dfsg-1~bpo60+1","1:1.8.13.1~dfsg-1","1:1.8.13.1~dfsg-1+powerpcspe1","1:1.8.13.1~dfsg-1~bpo60+1","1:1.8.13.1~dfsg-2","1:1.8.13.1~dfsg-3","1:1.8.3.3-1","1:1.8.4-1","1:1.8.4.2-1","1:1.8.4.3-1","1:1.8.4.4~dfsg-1","1:1.8.4.4~dfsg-2","1:1.8.7.1~dfsg-1","1:1.8.7.1~dfsg-2","1:1.8.7.1~dfsg-3","1:1.8.8.0~dfsg-1","1:1.8.8.2~dfsg-1","1:11.10.0~dfsg-1","1:11.10.0~dfsg-1~bpo70+1","1:11.10.2~dfsg-1","1:11.10.2~dfsg-1~bpo70+1","1:11.11.0~dfsg-1","1:11.11.0~dfsg-1~bpo70+1","1:11.11.0~dfsg-2","1:11.12.0~dfsg-1","1:11.12.0~dfsg-1~bpo70+1","1:11.12.1~dfsg-1","1:11.13.0~dfsg-1","1:11.13.0~dfsg-1~bpo70+1","1:11.13.1~dfsg-1","1:11.13.1~dfsg-2","1:11.13.1~dfsg-2~bpo70+1","1:11.5.1~dfsg-1","1:11.5.1~dfsg-2","1:11.5.1~dfsg1-1","1:11.5.1~dfsg1-1~bpo70+1","1:11.6.0~dfsg-1","1:11.6.0~dfsg-2","1:11.6.0~dfsg-3","1:11.7.0~dfsg-1","1:11.7.0~dfsg-1+e1","1:11.7.0~dfsg-1~bpo70+1","1:11.8.0~dfsg-1","1:11.8.0~dfsg-2","1:11.8.1~dfsg-1","1:11.8.1~dfsg-1~bpo70+1","1:11.9.0~dfsg-1","1:11.9.0~dfsg-2","1:11.9.0~dfsg-2~bpo70+1","1:13.0.0~dfsg-1","1:13.0.0~dfsg-2","1:13.1.0~dfsg-1","1:13.1.0~dfsg-1.1","1:13.10.0~dfsg-1","1:13.11.2~dfsg-1","1:13.12.1~dfsg-1","1:13.12.2~dfsg-1","1:13.12.2~dfsg-2","1:13.13.1~dfsg-1","1:13.13.1~dfsg-2","1:13.13.1~dfsg-3","1:13.13.1~dfsg-3~exp1","1:13.13.1~dfsg-4","1:13.14.0~dfsg-1","1:13.14.0~dfsg-1~exp1","1:13.14.1~dfsg-1","1:13.14.1~dfsg-2","1:13.17.0~dfsg-1","1:13.17.0~dfsg-2","1:13.17.1~dfsg-1","1:13.17.2~dfsg-1","1:13.17.2~dfsg-2","1:13.18.1~dfsg-1","1:13.18.3~dfsg-1","1:13.18.5~dfsg-1","1:13.20.0~dfsg-1","1:13.22.0~dfsg-1","1:13.22.0~dfsg-2","1:13.23.1~dfsg-1","1:13.23.1~dfsg-2","1:13.7.2~dfsg-1","1:13.8.0~dfsg-1","1:13.8.2~dfsg-1","1:13.9.1~dfsg-1","1:13.9.1~dfsg-2","1:16.1.0~dfsg-1","1:16.1.0~dfsg-2","1:16.1.0~dfsg-3","1:16.1.0~dfsg-4","1:16.1.1~dfsg-1","1:16.10.0~dfsg-1","1:16.12.0~dfsg-1","1:16.15.0~dfsg-1","1:16.15.1~dfsg-1","1:16.16.1~dfsg-1","1:16.16.1~dfsg-1~bpo10+1","1:16.2.0~dfsg-1","1:16.2.1~dfsg-1","1:16.2.1~dfsg-2"]},{"source":"osv","ecosystem":"Debian:12","package":"ring","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20230206.0~ds1-1"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.5~dfsg-6+deb9u3"}]}],"versions":["2.5.5~dfsg-6","2.5.5~dfsg-6+deb9u1","2.5.5~dfsg-6+deb9u2"],"bundled":15},{"source":"osv","ecosystem":"Debian:11","package":"ring","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20210112.2.b757bac~ds1-1+deb11u1"}]}],"versions":["20210112.2.b757bac~ds1-1"],"bundled":21},{"source":"osv","ecosystem":"Debian:11","package":"asterisk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:16.16.1~dfsg-1+deb11u1"}]}],"versions":["1:16.16.1~dfsg-1","1:16.16.1~dfsg-1+deb11u1~bpo10+1"],"bundled":2},{"source":"osv","ecosystem":"Mageia:8","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10-5.3.mga8"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"pjproject","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"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"pjproject","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.2~dfsg-1ubuntu0.1~esm1"}]}],"versions":["2.6~dfsg-2","2.7~dfsg-1","2.7.1~dfsg-1","2.7.1~dfsg-1build1","2.7.2~dfsg-1"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"pjsip","product":"pjproject"},{"vendor":"teluu","product":"pjsip"}],"references":[{"url":"https://github.com/pjsip/pjproject/security/advisories/GHSA-cv8x-p47p-99wr","tags":["x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://github.com/pjsip/pjproject/pull/2716","tags":["x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://github.com/pjsip/pjproject/commit/d5f95aa066f878b0aef6a64e60b61e8626e664cd","tags":["x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://github.com/pjsip/pjproject/releases/tag/2.11.1","tags":["x_transferred","Release Notes","Third Party Advisory","advisory","report"]},{"url":"https://www.debian.org/security/2021/dsa-4999","tags":["vendor-advisory","x_transferred","Third Party Advisory","advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html","tags":["mailing-list","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://security.gentoo.org/glsa/202210-37","tags":["vendor-advisory","x_transferred","Third Party Advisory","advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html","tags":["web"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2021-32686","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-32686","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2021-0559.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=29317","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-32686","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-32686","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8122-1","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-32686","title":"Denial of Service in PJSIP","description":"PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. They cause a crash, resulting in a denial of service. These are fixed in version 2.11.1.","status":"published","published":"2021-07-23T00:00:00Z","modified":"2025-11-04T16:09:14.172Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2021-19490","description":"PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. They cause a crash, resulting in a denial of service. These are fixed in version 2.11.1.","status":"published","published":"2021-07-23T00:00:00Z","modified":"2025-11-04T16:09:14Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T19:49:29.391161Z"}],"nvd":[{"id":"CVE-2021-32686","description":"PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. They cause a crash, resulting in a denial of service. These are fixed in version 2.11.1.","status":"published","published":"2021-07-23T22:15:08.373Z","modified":"2026-06-17T03:53:25.397Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T14:06:56.185362Z"}],"osv":[{"id":"ALPINE-CVE-2021-32686","description":"PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. They cause a crash, resulting in a denial of service. These are fixed in version 2.11.1.","status":"published","published":"2021-07-23T22:15:08.373Z","modified":"2026-10-23T17:17:56.188754805Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:27:48.646074Z"},{"id":"CVE-2021-32686","description":"PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. They cause a crash, resulting in a denial of service. These are fixed in version 2.11.1.","status":"published","published":"2021-07-23T22:15:08.373Z","modified":"2026-10-20T14:24:31.723107734Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:19.793849Z"},{"id":"DEBIAN-CVE-2021-32686","description":"PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. They cause a crash, resulting in a denial of service. These are fixed in version 2.11.1.","status":"published","published":"2021-07-23T22:15:08.373Z","modified":"2026-10-23T18:03:14.037035831Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:35.233346Z"},{"id":"UBUNTU-CVE-2021-32686","description":"PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. They cause a crash, resulting in a denial of service. These are fixed in version 2.11.1.","status":"published","published":"2021-07-23T22:15:00Z","modified":"2026-04-22T12:54:16.835179Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:27.332852Z"},{"id":"DLA-2962-1","title":"pjproject - security update","status":"published","published":"2022-03-28T00:00:00Z","modified":"2026-03-09T01:22:05.666031Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"DLA-3887-1","title":"ring - security update","status":"published","published":"2024-09-14T00:00:00Z","modified":"2026-03-09T01:22:59.027543Z","updated_at":"2026-11-02T15:46:12.203458Z"},{"id":"DSA-4999-1","title":"asterisk - security update","status":"published","published":"2021-11-01T00:00:00Z","modified":"2026-03-09T02:08:59.456466Z","updated_at":"2026-11-02T15:46:17.543497Z"},{"id":"MGASA-2021-0559","title":"Updated pjproject packages fix security vulnerability","description":"Updated pjproject packages fix security vulnerability:\n\nIn PJSIP before version 2.11.1, there are a couple of issues found in the\nSSL socket. First, a race condition between callback and destroy, due to\nthe accepted socket having no group lock. Second, the SSL socket parent/\nlistener may get destroyed during handshake. Both issues were reported to\nhappen intermittently in heavy load TLS connections. They cause a crash,\nresulting in a denial of service (CVE-2021-32686). \n","status":"published","published":"2021-12-19T12:26:08Z","modified":"2026-04-16T04:43:58.79781302Z","updated_at":"2026-11-02T15:49:41.849028Z"}]}}