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An exploit could allow the attacker to cause a buffer underflow, triggering a crash on an affected device. This vulnerability affects Cisco ASA Software and Cisco FTD Software that is running on the following Cisco products: Adaptive Security Virtual Appliance (ASAv), Firepower Threat Defense Virtual (FTDv), Firepower 2100 Series Security Appliance. Cisco Bug IDs: CSCve18902, CSCve34335, CSCve38446." } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-20", "description": "CWE-20", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2018-07-05T17:57:01.000Z", "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco" }, "references": [ { "tags": [ "x_refsource_CONFIRM" ], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-asa3" }, { "name": "1040725", "tags": [ "vdb-entry", "x_refsource_SECTRACK" ], "url": "http://www.securitytracker.com/id/1040725" }, { "tags": [ "x_refsource_MISC" ], "url": "https://ics-cert.us-cert.gov/advisories/ICSA-18-184-01" } ], "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "psirt@cisco.com", "ID": "CVE-2018-0231", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Cisco Adaptive Security Appliance", "version": { "version_data": [ { "version_value": "Cisco Adaptive Security Appliance" } ] } } ] }, "vendor_name": "n/a" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A vulnerability in the Transport Layer Security (TLS) library of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of the affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a malicious TLS message to an interface enabled for Secure Layer Socket (SSL) services on an affected device. Messages using SSL Version 3 (SSLv3) or SSL Version 2 (SSLv2) cannot be be used to exploit this vulnerability. An exploit could allow the attacker to cause a buffer underflow, triggering a crash on an affected device. This vulnerability affects Cisco ASA Software and Cisco FTD Software that is running on the following Cisco products: Adaptive Security Virtual Appliance (ASAv), Firepower Threat Defense Virtual (FTDv), Firepower 2100 Series Security Appliance. 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