{ "id": "CVE-2023-20215", "sourceIdentifier": "ykramarz@cisco.com", "published": "2023-08-03T22:15:11.513", "lastModified": "2024-01-25T17:15:37.373", "vulnStatus": "Modified", "descriptions": [ { "lang": "en", "value": "A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass a configured rule, allowing traffic onto a network that should have been blocked.\r\n\r This vulnerability is due to improper detection of malicious traffic when the traffic is encoded with a specific content format. An attacker could exploit this vulnerability by using an affected device to connect to a malicious server and receiving crafted HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device." } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 3.9, "impactScore": 1.4 }, { "source": "ykramarz@cisco.com", "type": "Secondary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 3.9, "impactScore": 1.4 } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "NVD-CWE-noinfo" } ] }, { "source": "ykramarz@cisco.com", "type": "Secondary", "description": [ { "lang": "en", "value": "CWE-202" } ] } ], "configurations": [ { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:cisco:asyncos:11.7.0-406:*:*:*:*:*:*:*", "matchCriteriaId": "A7A3D131-5E67-484E-93FA-BFF303019F38" }, { "vulnerable": true, "criteria": "cpe:2.3:o:cisco:asyncos:11.7.0-418:*:*:*:*:*:*:*", "matchCriteriaId": "12FFA6C7-9B30-4D17-8AB6-523776611524" }, { "vulnerable": true, "criteria": "cpe:2.3:o:cisco:asyncos:11.7.1-006:*:*:*:*:*:*:*", "matchCriteriaId": "93F2A8D1-E9B1-4D01-B0EB-25B5E3A40B89" }, { "vulnerable": true, "criteria": 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"matchCriteriaId": "BE85462C-079B-4488-AB0E-989D41EB7AFD" }, { "vulnerable": false, "criteria": "cpe:2.3:h:cisco:web_security_appliance_s690:-:*:*:*:*:*:*:*", "matchCriteriaId": "48A8E5E8-8361-4BC8-BFA9-CAE4745A9C48" }, { "vulnerable": false, "criteria": "cpe:2.3:h:cisco:web_security_appliance_s690x:-:*:*:*:*:*:*:*", "matchCriteriaId": "FBEAFE16-BD4F-4538-9A06-173FB678DB8B" } ] } ] } ], "references": [ { "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-vXvqwzsj", "source": "ykramarz@cisco.com", "tags": [ "Vendor Advisory" ] } ] }