CVE-2021-1236

{"id": "CVE-2021-1236", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Secondary", "source": "ykramarz@cisco.com", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 4.0, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.2}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2021-01-13T22:15:20.583", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html", "source": "ykramarz@cisco.com"}, {"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-app-bypass-cSBYCATq", "tags": ["Vendor Advisory"], "source": "ykramarz@cisco.com"}, {"url": "https://www.debian.org/security/2023/dsa-5354", "source": "ykramarz@cisco.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-670"}]}, {"type": "Secondary", "source": "ykramarz@cisco.com", "description": [{"lang": "en", "value": "CWE-670"}]}], "descriptions": [{"lang": "en", "value": "Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection algorithm. An attacker could exploit this vulnerability by sending crafted packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network."}, {"lang": "es", "value": "M\u00faltiples productos de Cisco est\u00e1n afectados por una vulnerabilidad en el motor de detecci\u00f3n de aplicaciones de Snort que podr\u00eda permitir a un atacante remoto no autenticado omitir las pol\u00edticas configuradas en un sistema afectado. La vulnerabilidad es debido a un fallo en el algoritmo de detecci\u00f3n. Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de paquetes dise\u00f1ados que fluir\u00edan a trav\u00e9s de un sistema afectado. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante omitir las pol\u00edticas configuradas y entregar una carga \u00fatil maliciosa a la red protegida."}], "lastModified": "2023-05-22T18:57:24.750", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "72B91784-38A9-4A2A-AA92-8AB558924BBD", "versionEndExcluding": "17.4.1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A2D2305B-B69E-4F74-A44E-07B3205CE9F7"}, {"criteria": "cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "26DD41B3-1D1D-44D3-BA8E-5A66AFEE77E6"}, {"criteria": "cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "5AAD4397-6DCF-493A-BD61-3A890F6F3AB2"}, {"criteria": "cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "3F2F0A8E-97F6-41AC-BE67-4B2D60F9D36B"}, {"criteria": "cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "BB9229F3-7BCE-46C4-9879-D57B5BAAE44E"}, {"criteria": "cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A5A606FE-E6F1-43F9-B1CD-D9DF35FC3573"}, {"criteria": "cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "6C8AED7C-DDA3-4C29-BB95-6518C02C551A"}, {"criteria": "cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "9421DBEF-AE42-4234-B49F-FCC34B804D7F"}, {"criteria": "cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "5419CB9F-241F-4431-914F-2659BE27BEA5"}, {"criteria": "cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "7DE02DBE-EAD5-4F37-8AB7-DF46A605A0E2"}, {"criteria": "cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "5720462A-BE6B-4E84-A1A1-01E80BBA86AD"}, {"criteria": "cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "818CEFA6-208C-43C3-8E43-474A93ADCF21"}, {"criteria": "cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E8B60888-6E2B-494E-AC65-83337661EE7D"}, {"criteria": "cpe:2.3:h:cisco:csr_1000v:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "BF8B0B49-2C99-410B-B011-5B821C5992FB"}, {"criteria": "cpe:2.3:h:cisco:isa_3000:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "9510E97A-FD78-43C6-85BC-223001ACA264"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:cisco:firepower_management_center:2.9.14.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4ED9EFA4-D903-4F21-91CD-96E8D13B8EC6"}, {"criteria": "cpe:2.3:a:cisco:firepower_management_center:2.9.14.14:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5397463D-13E1-472C-B543-3CC396A77BAA"}, {"criteria": "cpe:2.3:a:cisco:firepower_management_center:2.9.15:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C53AE9E8-F123-42ED-BB8D-AC625E998951"}, {"criteria": "cpe:2.3:a:cisco:firepower_management_center:2.9.16:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C96EC981-446D-4741-AEE0-F615A468A7FF"}, {"criteria": "cpe:2.3:a:cisco:firepower_management_center:2.9.17:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "163F6B90-2F10-40CC-897B-FB58FA4568FD"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AFD5C16-FA94-4FDA-9378-F93661419098", "versionEndExcluding": "6.5.0.5"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0ADB3B5E-B17C-4D12-9ABE-1817CED279B2", "versionEndExcluding": "2.9.14"}], "operator": "OR"}]}], "sourceIdentifier": "ykramarz@cisco.com"}