CVE-2021-26713

{"id": "CVE-2021-26713", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "authentication": "SINGLE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2021-02-19T20:15:13.193", "references": [{"url": "https://downloads.asterisk.org/pub/security/", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://downloads.asterisk.org/pub/security/AST-2021-004.html", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://issues.asterisk.org/jira/browse/ASTERISK-29205", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow in res_rtp_asterisk.c in Sangoma Asterisk before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6 allows an authenticated WebRTC client to cause an Asterisk crash by sending multiple hold/unhold requests in quick succession. This is caused by a signedness comparison mismatch."}, {"lang": "es", "value": "Un desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria en el archivo res_rtp_asterisk.c en Sangoma Asterisk versiones anteriores a 16.16.1, versiones 17.x anteriores a 17.9.2 y versiones 18.x anteriores a 18.2.1 y Certified Asterisk versiones anteriores a 16.8-cert6, permite a un cliente WebRTC autenticado causar un bloqueo de Asterisk mediante el env\u00edo de m\u00faltiples peticiones de hold/unhold en una sucesi\u00f3n r\u00e1pida. Esto es causado por una discrepancia en la comparaci\u00f3n de firmas"}], "lastModified": "2021-02-26T17:02:17.080", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7382B641-0396-456F-BF33-3F6412E35F2D", "versionEndExcluding": "16.16.1", "versionStartIncluding": "16.0.0"}, {"criteria": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C5BA8606-ADA9-4841-A7E2-A9165138849A", "versionEndExcluding": "17.9.2", "versionStartIncluding": "17.0.0"}, {"criteria": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CE8661F7-03A5-4850-BEF7-E306AECE3037", "versionEndExcluding": "18.2.1", "versionStartIncluding": "18.0.0"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "81C3E390-8B99-4EB8-82DD-02893611209A"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17DB2297-1908-4F87-8046-2BAA74569D71"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CEA2CC40-C2F6-4828-82F0-1B50D3E61F77"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "32F19F43-C1E8-4B6C-9356-AF355B7320BD"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "21D1FA32-B441-485F-8AE9-F3A394626909"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F7795CCF-B160-4B4F-9529-1192C11D7FDB"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0C5E5D0D-9EB3-40FD-8B7E-E93A95D07AB1"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C7DFDA30-DD61-4BBC-AFE4-448BF2A4F303"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "142F1F89-49AC-4A0B-A273-61F697063A5A"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "53041795-788C-4914-A2F6-41539ABE0244"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FBB98E65-B2D0-49A4-8BF3-12155E3E13C9"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "769C854C-03CD-40A9-B39B-C0CDCA8252EA"}, {"criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6D86AD6E-4E07-48B0-88D8-E18F277FFE6A"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}