{"affected":[{"affectedData":[{"product":"Cisco Adaptive Security Appliance (ASA) Software","vendor":"Cisco","versions":[{"status":"affected","version":"n/a"}]}],"source":"psirt@cisco.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*","matchCriteriaId":"D6D51CDA-0C1E-4AD7-A920-C3CC2B0C994A","versionEndExcluding":"6.4.0.12","versionStartIncluding":"6.2.2","vulnerable":true},{"criteria":"cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*","matchCriteriaId":"9A4B908B-0C0B-4B1D-9B36-8D2C6B182478","versionEndExcluding":"6.6.4","versionStartIncluding":"6.5.0","vulnerable":true},{"criteria":"cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*","matchCriteriaId":"32F3BBEA-B436-4856-B598-E9DBD990DF4C","versionEndExcluding":"6.7.0.2","versionStartIncluding":"6.7.0","vulnerable":true},{"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","matchCriteriaId":"17BDCF23-5836-4E95-A0E6-81334FE3F7BE","versionEndExcluding":"9.8.4.34","versionStartIncluding":"9.8","vulnerable":true},{"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","matchCriteriaId":"8A9BFFBC-F577-47CD-83E8-A6227B17D557","versionEndExcluding":"9.9.2.85","versionStartIncluding":"9.9","vulnerable":true},{"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","matchCriteriaId":"13C4CAAF-7E9E-4D91-AF3D-9792CE47FDAF","versionEndExcluding":"9.12.4.18","versionStartIncluding":"9.10","vulnerable":true},{"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","matchCriteriaId":"5B74C14F-C95B-4AF5-A255-1CA824AA7FDE","versionEndExcluding":"9.13.1.21","versionStartIncluding":"9.13","vulnerable":true},{"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","matchCriteriaId":"06071877-6E69-4440-9306-6410223218D7","versionEndExcluding":"9.14.2.13","versionStartIncluding":"9.14","vulnerable":true},{"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","matchCriteriaId":"9D2794F2-BC8F-42CC-910A-203BE7B3475F","versionEndExcluding":"9.15.1.15","versionStartIncluding":"9.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the SIP inspection engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a crash and reload of an affected device, resulting in a denial of service (DoS) condition.The vulnerability is due to a crash that occurs during a hash lookup for a SIP pinhole connection. An attacker could exploit this vulnerability by sending crafted SIP traffic through an affected device. A successful exploit could allow the attacker to cause a crash and reload of the affected device."},{"lang":"es","value":"Una vulnerabilidad en el motor de inspección SIP del Software Cisco Adaptive Security Appliance (ASA) y el software Cisco Firepower Threat Defense (FTD), podría permitir a un atacante remoto no autenticado causar un bloqueo y la recarga de un dispositivo afectado, resultando en una denegación de servicio ( DoS). La vulnerabilidad es debido a un bloqueo que ocurre durante una búsqueda de hash para una conexión SIP pinhole. Un atacante podría explotar esta vulnerabilidad mediante el envío de tráfico SIP diseñado a través de un dispositivo afectado. Una explotación con éxito podría permitir al atacante causar un bloqueo y recargar el dispositivo afectado"}],"id":"CVE-2021-1501","lastModified":"2026-08-11T19:33:44.513","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"HIGH","cvssData":{"accessComplexity":"LOW","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"COMPLETE","baseScore":7.8,"confidentialityImpact":"NONE","integrityImpact":"NONE","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:C","version":"2.0"},"exploitabilityScore":10.0,"impactScore":6.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.6,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":4.0,"source":"psirt@cisco.com","type":"Secondary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":3.6,"source":"nvd@nist.gov","type":"Primary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2021-1501","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2024-11-08T20:02:11.453144Z","version":"2.0.3"}}]},"published":"2021-04-29T18:15:09.463","references":[{"source":"psirt@cisco.com","tags":["Vendor Advisory"],"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-sipdos-GGwmMerC"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-sipdos-GGwmMerC"}],"sourceIdentifier":"psirt@cisco.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-613"}],"source":"psirt@cisco.com","type":"Secondary"},{"description":[{"lang":"en","value":"NVD-CWE-noinfo"}],"source":"nvd@nist.gov","type":"Primary"}]}