CVE-2021-1236
Vulnerability from cvelistv5
Published
2021-01-13 21:17
Modified
2024-09-16 19:25
Severity ?
EPSS score ?
Summary
Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability
References
Impacted products
▼ | Vendor | Product |
---|---|---|
Cisco | Cisco Firepower Threat Defense Software |
{ "containers": { "adp": [ { "providerMetadata": { "dateUpdated": "2024-08-03T16:02:56.434Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "name": "20210113 Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability", "tags": [ "vendor-advisory", "x_transferred" ], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-app-bypass-cSBYCATq" }, { "name": "[debian-lts-announce] 20230210 [SECURITY] [DLA 3317-1] snort security update", "tags": [ "mailing-list", "x_transferred" ], "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html" }, { "name": "DSA-5354", "tags": [ "vendor-advisory", "x_transferred" ], "url": "https://www.debian.org/security/2023/dsa-5354" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "product": "Cisco Firepower Threat Defense Software", "vendor": "Cisco", "versions": [ { "status": "affected", "version": "n/a" } ] } ], "datePublic": "2021-01-13T00:00:00", "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." } ], "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." } ], "metrics": [ { "cvssV3_0": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.0" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-670", "description": "CWE-670", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2023-02-19T00:00:00", "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco" }, "references": [ { "name": "20210113 Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability", "tags": [ "vendor-advisory" ], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-app-bypass-cSBYCATq" }, { "name": "[debian-lts-announce] 20230210 [SECURITY] [DLA 3317-1] snort security update", "tags": [ "mailing-list" ], "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html" }, { "name": "DSA-5354", "tags": [ "vendor-advisory" ], "url": "https://www.debian.org/security/2023/dsa-5354" } ], "source": { "advisory": "cisco-sa-snort-app-bypass-cSBYCATq", "defect": [ [ "CSCvs85467", "CSCvu21318" ] ], "discovery": "INTERNAL" }, "title": "Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability" } }, "cveMetadata": { "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "assignerShortName": "cisco", "cveId": "CVE-2021-1236", "datePublished": "2021-01-13T21:17:03.406091Z", "dateReserved": "2020-11-13T00:00:00", "dateUpdated": "2024-09-16T19:25:21.816Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2021-1236\",\"sourceIdentifier\":\"ykramarz@cisco.com\",\"published\":\"2021-01-13T22:15:20.583\",\"lastModified\":\"2023-05-22T18:57:24.750\",\"vulnStatus\":\"Modified\",\"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.\u0026#xa0;La vulnerabilidad es debido a un fallo en el algoritmo de detecci\u00f3n.\u0026#xa0;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.\u0026#xa0;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.\"}],\"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}],\"cvssMetricV30\":[{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\",\"baseScore\":4.0,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":2.2,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:P/A:N\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\",\"baseScore\":5.0},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-670\"}]},{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-670\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"17.4.1\",\"matchCriteriaId\":\"72B91784-38A9-4A2A-AA92-8AB558924BBD\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A2D2305B-B69E-4F74-A44E-07B3205CE9F7\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"26DD41B3-1D1D-44D3-BA8E-5A66AFEE77E6\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5AAD4397-6DCF-493A-BD61-3A890F6F3AB2\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3F2F0A8E-97F6-41AC-BE67-4B2D60F9D36B\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"BB9229F3-7BCE-46C4-9879-D57B5BAAE44E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A5A606FE-E6F1-43F9-B1CD-D9DF35FC3573\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6C8AED7C-DDA3-4C29-BB95-6518C02C551A\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9421DBEF-AE42-4234-B49F-FCC34B804D7F\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5419CB9F-241F-4431-914F-2659BE27BEA5\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7DE02DBE-EAD5-4F37-8AB7-DF46A605A0E2\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5720462A-BE6B-4E84-A1A1-01E80BBA86AD\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"818CEFA6-208C-43C3-8E43-474A93ADCF21\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E8B60888-6E2B-494E-AC65-83337661EE7D\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:csr_1000v:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"BF8B0B49-2C99-410B-B011-5B821C5992FB\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:isa_3000:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9510E97A-FD78-43C6-85BC-223001ACA264\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_management_center:2.9.14.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4ED9EFA4-D903-4F21-91CD-96E8D13B8EC6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_management_center:2.9.14.14:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5397463D-13E1-472C-B543-3CC396A77BAA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_management_center:2.9.15:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C53AE9E8-F123-42ED-BB8D-AC625E998951\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_management_center:2.9.16:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C96EC981-446D-4741-AEE0-F615A468A7FF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_management_center:2.9.17:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"163F6B90-2F10-40CC-897B-FB58FA4568FD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.5.0.5\",\"matchCriteriaId\":\"4AFD5C16-FA94-4FDA-9378-F93661419098\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.9.14\",\"matchCriteriaId\":\"0ADB3B5E-B17C-4D12-9ABE-1817CED279B2\"}]}]}],\"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\",\"source\":\"ykramarz@cisco.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.debian.org/security/2023/dsa-5354\",\"source\":\"ykramarz@cisco.com\"}]}}" } }
Loading...
Loading...
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.