CVE-2021-26717

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://downloads.asterisk.org/pub/security/", "name": "https://downloads.asterisk.org/pub/security/", "tags": ["Vendor Advisory"], "refsource": "MISC"}, {"url": "http://seclists.org/fulldisclosure/2021/Feb/58", "name": "20210218 AST-2021-002: Remote crash possible when negotiating T.38", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "refsource": "FULLDISC"}, {"url": "https://issues.asterisk.org/jira/browse/ASTERISK-29203", "name": "https://issues.asterisk.org/jira/browse/ASTERISK-29203", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://downloads.asterisk.org/pub/security/AST-2021-002.html", "name": "https://downloads.asterisk.org/pub/security/AST-2021-002.html", "tags": ["Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "http://packetstormsecurity.com/files/161471/Asterisk-Project-Security-Advisory-AST-2021-002.html", "name": "http://packetstormsecurity.com/files/161471/Asterisk-Project-Security-Advisory-AST-2021-002.html", "tags": ["Third Party Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "An issue was discovered in Sangoma Asterisk 16.x before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6. When re-negotiating for T.38, if the initial remote response was delayed just enough, Asterisk would send both audio and T.38 in the SDP. If this happened, and the remote responded with a declined T.38 stream, then Asterisk would crash."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-26717", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}}, "publishedDate": "2021-02-18T20:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "16.16.1", "versionStartIncluding": "16.0.0"}, {"cpe23Uri": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "17.9.2", "versionStartIncluding": "17.0.0"}, {"cpe23Uri": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "18.2.1", "versionStartIncluding": "18.0"}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:-:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc2:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc3:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc4:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert2:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert3:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc2:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc3:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc4:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:digium:certified_asterisk:16.8:cert5:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-02-24T17:34Z"}