gsd-2023-20215
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
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.
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.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2023-20215", "id": "GSD-2023-20215" }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2023-20215" ], "details": "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.", "id": "GSD-2023-20215", "modified": "2023-12-13T01:20:27.968608Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "psirt@cisco.com", "ID": "CVE-2023-20215", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Cisco Secure Web Appliance", "version": { "version_data": [ { "version_affected": "=", "version_value": "11.7.0-406" }, { "version_affected": "=", "version_value": "11.7.0-418" }, { "version_affected": "=", "version_value": "11.7.1-049" }, { "version_affected": "=", "version_value": "11.7.1-006" }, { "version_affected": "=", "version_value": "11.7.1-020" }, { "version_affected": "=", "version_value": "11.7.2-011" }, { "version_affected": "=", "version_value": "11.8.0-414" }, { "version_affected": "=", "version_value": "11.8.1-023" }, { "version_affected": "=", "version_value": "11.8.3-018" }, { "version_affected": "=", "version_value": "11.8.3-021" }, { "version_affected": "=", "version_value": "12.0.1-268" }, { "version_affected": "=", "version_value": "12.0.3-007" }, { "version_affected": "=", "version_value": "12.5.2-007" }, { "version_affected": "=", "version_value": "12.5.1-011" }, { "version_affected": "=", "version_value": "12.5.4-005" }, { "version_affected": "=", "version_value": "12.5.5-004" }, { "version_affected": "=", "version_value": "14.5.0-498" }, { "version_affected": "=", "version_value": "14.5.1-016" }, { "version_affected": "=", "version_value": "14.0.3-014" }, { "version_affected": "=", "version_value": "14.0.2-012" }, { "version_affected": "=", "version_value": "14.0.4-005" } ] } } ] }, "vendor_name": "Cisco" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "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." } ] }, "exploit": [ { "lang": "en", "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory." } ], "impact": { "cvss": [ { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1" } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "cweId": "CWE-202", "lang": "eng", "value": "Exposure of Sensitive Information Through Data Queries" } ] } ] }, "references": { "reference_data": [ { "name": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-vXvqwzsj", "refsource": "MISC", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-vXvqwzsj" } ] }, "source": { "advisory": "cisco-sa-wsa-bypass-vXvqwzsj", "defects": [ "CSCwf60901", "CSCwf55917", "CSCwf94501" ], "discovery": "EXTERNAL" } }, "nvd.nist.gov": { "cve": { "configurations": [ { "nodes": [ { "cpeMatch": [ { "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": "cpe:2.3:o:cisco:asyncos:11.7.1-020:*:*:*:*:*:*:*", "matchCriteriaId": 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"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", "vulnerable": false } ], "negate": false, "operator": "OR" } ], "operator": "AND" } ], "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." } ], "id": "CVE-2023-20215", "lastModified": "2024-01-25T17:15:37.373", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1" }, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary" }, { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1" }, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "ykramarz@cisco.com", "type": "Secondary" } ] }, "published": "2023-08-03T22:15:11.513", "references": [ { "source": "ykramarz@cisco.com", "tags": [ "Vendor Advisory" ], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-vXvqwzsj" } ], "sourceIdentifier": "ykramarz@cisco.com", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "NVD-CWE-noinfo" } ], "source": "nvd@nist.gov", "type": "Primary" }, { "description": [ { "lang": "en", "value": "CWE-202" } ], "source": "ykramarz@cisco.com", "type": "Secondary" } ] } } } }
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