{"id":"CVE-2022-42705","details":"A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription.","modified":"2026-07-11T03:54:24.547168972Z","published":"2022-12-05T00:00:00Z","database_specific":{"cna_assigner":"mitre","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/42xxx/CVE-2022-42705.json"},"references":[{"type":"WEB","url":"https://downloads.asterisk.org/pub/security/AST-2022-008.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/42xxx/CVE-2022-42705.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-42705"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5358"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/asterisk/asterisk","events":[{"introduced":"a65908f83e2f17a3aca7eb39c8e06045aca02674"},{"fixed":"dd2ebdb336f13c93f7f46ee5f1f65544f4d8ab3b"},{"introduced":"cdb67c6b99459c7731ba926d6eba3e24be79f905"},{"fixed":"226868d1139af566c481265ef9657a1b33aa065e"},{"introduced":"cd3505fa5a41c97a1e392c090a3619cd155c0c50"},{"fixed":"4c6f3fd7847bbb6111a6e615780e62780c42f9de"},{"introduced":"c6c7103efa6605a6db7ca28b4b17cd2d1c15a05c"}],"database_specific":{"source":["CPE_RANGE","CPE_STRING"],"cpe":["cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*","cpe:2.3:a:sangoma:asterisk:20.0.0:*:*:*:*:*:*:*","cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:*"],"extracted_events":[{"introduced":"16.0.0"},{"fixed":"16.29.1"},{"introduced":"18.14.0"},{"fixed":"18.15.1"},{"introduced":"19.6.0"},{"fixed":"19.7.1"},{"introduced":"20.0.0"},{"last_affected":"20.0.0"},{"introduced":"18.9-cert2"},{"last_affected":"18.9-cert2"}]}}],"versions":["18.9-cert2","20.0.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-42705.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}