{"id":"CVE-2021-46837","state":"PUBLISHED","title":"res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash b","description":"res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash by sending an m=image line and zero port in a response to a T.38 re-invite initiated by Asterisk. This is a re-occurrence of the CVE-2019-15297 symptoms but not for exactly the same reason. The crash occurs because there is an append operation relative to the active topology, but this should instead be a replace operation.","publishedAt":"2022-08-30T00:00:00.000Z","updatedAt":"2024-08-04T05:17:42.455Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://downloads.asterisk.org/pub/security/AST-2021-006.html","https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html","https://www.debian.org/security/2022/dsa-5285"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:16.371Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/46xxx/CVE-2021-46837.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-46837","state":"PUBLISHED","datePublished":"2022-08-30T00:00:00.000Z","dateUpdated":"2024-08-04T05:17:42.455Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2022-08-30T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash by sending an m=image line and zero port in a response to a T.38 re-invite initiated by Asterisk. This is a re-occurrence of the CVE-2019-15297 symptoms but not for exactly the same reason. The crash occurs because there is an append operation relative to the active topology, but this should instead be a replace operation."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://downloads.asterisk.org/pub/security/AST-2021-006.html"},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html","name":"[debian-lts-announce] 20221117 [SECURITY] [DLA 3194-1] asterisk security update","tags":["mailing-list"]},{"url":"https://www.debian.org/security/2022/dsa-5285","name":"DSA-5285","tags":["vendor-advisory"]}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"n/a"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2022-11-18T00:00:00.000Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://downloads.asterisk.org/pub/security/AST-2021-006.html","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html","name":"[debian-lts-announce] 20221117 [SECURITY] [DLA 3194-1] asterisk security update","tags":["mailing-list","x_transferred"]},{"url":"https://www.debian.org/security/2022/dsa-5285","name":"DSA-5285","tags":["vendor-advisory","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T05:17:42.455Z"}}]}}}