{"id":"CVE-2024-20494","state":"PUBLISHED","title":"A vulnerability in the TLS cryptography functionality of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthent","description":"A vulnerability in the TLS cryptography functionality of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.\r\n\r This vulnerability is due to improper data validation during the TLS 1.3 handshake. An attacker could exploit this vulnerability by sending a crafted TLS 1.3 packet to an affected system through a TLS 1.3-enabled listening socket. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.\r\n\r Note: This vulnerability can also impact the integrity of a device by causing VPN HostScan communication failures or file transfer failures when Cisco ASA Software is upgraded using Cisco Adaptive Security Device Manager (ASDM).","publishedAt":"2024-10-23T17:53:00.574Z","updatedAt":"2024-10-23T19:39:04.608Z","severity":{"score":8.6,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","source":"cisco"},"assigner":"cisco","products":["Cisco Cisco Adaptive Security Appliance (ASA) Software","Cisco Cisco Firepower Threat Defense Software"],"affected":[{"vendor":"Cisco","product":"Cisco Adaptive Security Appliance (ASA) Software","versions":[{"version":"9.19.1","status":"affected"},{"version":"9.19.1.5","status":"affected"},{"version":"9.19.1.9","status":"affected"},{"version":"9.19.1.12","status":"affected"},{"version":"9.19.1.18","status":"affected"},{"version":"9.19.1.22","status":"affected"},{"version":"9.19.1.24","status":"affected"},{"version":"9.19.1.27","status":"affected"},{"version":"9.19.1.28","status":"affected"},{"version":"9.19.1.31","status":"affected"},{"version":"9.20.1","status":"affected"},{"version":"9.20.1.5","status":"affected"},{"version":"9.20.2","status":"affected"},{"version":"9.20.2.10","status":"affected"},{"version":"9.20.2.21","status":"affected"},{"version":"9.20.2.22","status":"affected"},{"version":"9.20.3","status":"affected"}]},{"vendor":"Cisco","product":"Cisco Firepower Threat Defense Software","versions":[{"version":"7.3.0","status":"affected"},{"version":"7.3.1","status":"affected"},{"version":"7.3.1.1","status":"affected"},{"version":"7.3.1.2","status":"affected"},{"version":"7.4.0","status":"affected"},{"version":"7.4.1","status":"affected"},{"version":"7.4.1.1","status":"affected"},{"version":"7.4.2","status":"affected"}]}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-tls-CWY6zXB"],"weaknesses":["CWE-1287"],"ingestedAt":"2026-10-29T20:06:59.846Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/20xxx/CVE-2024-20494.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-20494","state":"PUBLISHED","datePublished":"2024-10-23T17:53:00.574Z","dateUpdated":"2024-10-23T19:39:04.608Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2023-11-08T15:08:07.686Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A vulnerability in the TLS cryptography functionality of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.\r\n\r This vulnerability is due to improper data validation during the TLS 1.3 handshake. An attacker could exploit this vulnerability by sending a crafted TLS 1.3 packet to an affected system through a TLS 1.3-enabled listening socket. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.\r\n\r Note: This vulnerability can also impact the integrity of a device by causing VPN HostScan communication failures or file transfer failures when Cisco ASA Software is upgraded using Cisco Adaptive Security Device Manager (ASDM)."}],"affected":[{"vendor":"Cisco","product":"Cisco Adaptive Security Appliance (ASA) Software","versions":[{"version":"9.19.1","status":"affected"},{"version":"9.19.1.5","status":"affected"},{"version":"9.19.1.9","status":"affected"},{"version":"9.19.1.12","status":"affected"},{"version":"9.19.1.18","status":"affected"},{"version":"9.19.1.22","status":"affected"},{"version":"9.19.1.24","status":"affected"},{"version":"9.19.1.27","status":"affected"},{"version":"9.19.1.28","status":"affected"},{"version":"9.19.1.31","status":"affected"},{"version":"9.20.1","status":"affected"},{"version":"9.20.1.5","status":"affected"},{"version":"9.20.2","status":"affected"},{"version":"9.20.2.10","status":"affected"},{"version":"9.20.2.21","status":"affected"},{"version":"9.20.2.22","status":"affected"},{"version":"9.20.3","status":"affected"}]},{"vendor":"Cisco","product":"Cisco Firepower Threat Defense Software","versions":[{"version":"7.3.0","status":"affected"},{"version":"7.3.1","status":"affected"},{"version":"7.3.1.1","status":"affected"},{"version":"7.3.1.2","status":"affected"},{"version":"7.4.0","status":"affected"},{"version":"7.4.1","status":"affected"},{"version":"7.4.1.1","status":"affected"},{"version":"7.4.2","status":"affected"}]}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-tls-CWY6zXB","name":"cisco-sa-asa-tls-CWY6zXB"}],"metrics":[{"format":"cvssV3_1","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","baseScore":8.6,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1287","lang":"en","description":"Improper Validation of Specified Type of Input","type":"cwe"}]}],"providerMetadata":{"shortName":"cisco","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateUpdated":"2024-10-23T17:53:00.574Z"},"exploits":[{"lang":"en","value":"The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}],"source":{"advisory":"cisco-sa-asa-tls-CWY6zXB","discovery":"INTERNAL","defects":["CSCwj92223","CSCwk74813"]}},"adp":[{"title":"CISA ADP Vulnrichment","affected":[{"vendor":"cisco","product":"adaptive_security_appliance_software","defaultStatus":"unknown","versions":[{"version":"9.19.1","status":"affected"},{"version":"9.19.1.5","status":"affected"},{"version":"9.19.1.9","status":"affected"},{"version":"9.19.1.12","status":"affected"},{"version":"9.19.1.18","status":"affected"},{"version":"9.19.1.22","status":"affected"},{"version":"9.19.1.24","status":"affected"},{"version":"9.19.1.27","status":"affected"},{"version":"9.19.1.28","status":"affected"},{"version":"9.19.1.31","status":"affected"},{"version":"9.20.1","status":"affected"},{"version":"9.20.1.5","status":"affected"},{"version":"9.20.2","status":"affected"},{"version":"9.20.2.10","status":"affected"},{"version":"9.20.2.21","status":"affected"},{"version":"9.20.2.22","status":"affected"},{"version":"9.20.3","status":"affected"}],"cpes":["cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*"]},{"vendor":"cisco","product":"firepower_threat_defense_software","defaultStatus":"unknown","versions":[{"version":"7.3.0","status":"affected"},{"version":"7.3.1","status":"affected"},{"version":"7.3.1.1","status":"affected"},{"version":"7.3.1.2","status":"affected"},{"version":"7.4.0","status":"affected"},{"version":"7.4.1","status":"affected"},{"version":"7.4.1.1","status":"affected"},{"version":"7.4.2","status":"affected"}],"cpes":["cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-10-23T19:13:09.595545Z","id":"CVE-2024-20494","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-10-23T19:39:04.608Z"}}]}}}