{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"cveId": "CVE-2023-20177", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2022-10-27T18:47:50.363Z", "datePublished": "2023-11-01T16:41:37.495Z", "dateUpdated": "2024-01-25T16:57:50.305Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2024-01-25T16:57:50.305Z"}, "descriptions": [{"lang": "en", "value": "A vulnerability in the SSL file policy implementation of Cisco Firepower Threat Defense (FTD) Software that occurs when the SSL/TLS connection is configured with a URL Category and the Snort 3 detection engine could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to unexpectedly restart. This vulnerability exists because a logic error occurs when a Snort 3 detection engine inspects an SSL/TLS connection that has either a URL Category configured on the SSL file policy or a URL Category configured on an access control policy with TLS server identity discovery enabled. Under specific, time-based constraints, an attacker could exploit this vulnerability by sending a crafted SSL/TLS connection through an affected device. A successful exploit could allow the attacker to trigger an unexpected reload of the Snort 3 detection engine, resulting in either a bypass or denial of service (DoS) condition, depending on device configuration. The Snort 3 detection engine will restart automatically. No manual intervention is required."}], "affected": [{"vendor": "Cisco", "product": "Cisco Firepower Threat Defense Software", "versions": [{"version": "7.0.0", "status": "affected"}, {"version": "7.0.0.1", "status": "affected"}, {"version": "7.0.1", "status": "affected"}, {"version": "7.0.1.1", "status": "affected"}, {"version": "7.0.2", "status": "affected"}, {"version": "7.0.2.1", "status": "affected"}, {"version": "7.0.3", "status": "affected"}, {"version": "7.0.4", "status": "affected"}, {"version": "7.0.5", "status": "affected"}, {"version": "7.1.0", "status": "affected"}, {"version": "7.1.0.1", "status": "affected"}, {"version": "7.1.0.2", "status": "affected"}, {"version": "7.1.0.3", "status": "affected"}, {"version": "7.2.0", "status": "affected"}, {"version": "7.2.0.1", "status": "affected"}, {"version": "7.2.1", "status": "affected"}, {"version": "7.2.2", "status": "affected"}, {"version": "7.2.3", "status": "affected"}, {"version": "7.3.0", "status": "affected"}, {"version": "7.3.1", "status": "affected"}, {"version": "7.3.1.1", "status": "affected"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Clearing of Heap Memory Before Release ('Heap Inspection')", "type": "cwe", "cweId": "CWE-244"}]}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sa-ftd-snort3-urldos-OccFQTeX", "name": "cisco-sa-sa-ftd-snort3-urldos-OccFQTeX"}], "metrics": [{"format": "cvssV3_1", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L", "baseScore": 4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW"}}], "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-sa-ftd-snort3-urldos-OccFQTeX", "discovery": "EXTERNAL", "defects": ["CSCwe87591"]}}}}

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This vulnerability exists because a logic error occurs when a Snort 3 detection engine inspects an SSL/TLS connection that has either a URL Category configured on the SSL file policy or a URL Category configured on an access control policy with TLS server identity discovery enabled. Under specific, time-based constraints, an attacker could exploit this vulnerability by sending a crafted SSL/TLS connection through an affected device. A successful exploit could allow the attacker to trigger an unexpected reload of the Snort 3 detection engine, resulting in either a bypass or denial of service (DoS) condition, depending on device configuration. The Snort 3 detection engine will restart automatically. No manual intervention is required."}, {"lang": "es", "value": "Una vulnerabilidad en la implementaci\u00f3n de la pol\u00edtica de archivos SSL del software Cisco Firepower Threat Defense (FTD) que ocurre cuando la conexi\u00f3n SSL/TLS est\u00e1 configurada con una categor\u00eda de URL y el motor de detecci\u00f3n Snort 3 podr\u00eda permitir que un atacante remoto no autenticado provoque la detecci\u00f3n de Snort 3. el motor se reinicie inesperadamente. Esta vulnerabilidad existe porque se produce un error l\u00f3gico cuando un motor de detecci\u00f3n Snort 3 inspecciona una conexi\u00f3n SSL/TLS que tiene una categor\u00eda de URL configurada en la pol\u00edtica de archivos SSL o una categor\u00eda de URL configurada en una pol\u00edtica de control de acceso con el descubrimiento de identidad del servidor TLS habilitado. Bajo limitaciones espec\u00edficas basadas en el tiempo, un atacante podr\u00eda aprovechar esta vulnerabilidad enviando una conexi\u00f3n SSL/TLS manipulada a trav\u00e9s de un dispositivo afectado. Un exploit exitoso podr\u00eda permitir al atacante activar una recarga inesperada del motor de detecci\u00f3n de Snort 3, lo que resultar\u00eda en una condici\u00f3n de omisi\u00f3n o Denegaci\u00f3n de Servicio (DoS), seg\u00fan la configuraci\u00f3n del dispositivo. El motor de detecci\u00f3n de Snort 3 se reiniciar\u00e1 autom\u00e1ticamente. No se requiere intervenci\u00f3n manual."}], "id": "CVE-2023-20177", "lastModified": "2024-01-25T17:15:32.550", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "ykramarz@cisco.com", "type": "Secondary"}]}, "published": "2023-11-01T17:15:11.287", "references": [{"source": "ykramarz@cisco.com", "tags": ["Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sa-ftd-snort3-urldos-OccFQTeX"}], "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-244"}], "source": "ykramarz@cisco.com", "type": "Secondary"}]}

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