{"containers": {"cna": {"affected": [{"product": "Arista EOS", "vendor": "Arista Networks", "versions": [{"lessThan": "EOS-4.23.10", "status": "affected", "version": "EOS-4.23", "versionType": "custom"}, {"lessThan": "EOS-4.24.8", "status": "affected", "version": "EOS-4.24", "versionType": "custom"}, {"lessThan": "EOS-4.25.6", "status": "affected", "version": "EOS-4.25", "versionType": "custom"}, {"lessThan": "EOS-4.26.3", "status": "affected", "version": "EOS-4.26", "versionType": "custom"}]}], "datePublic": "2022-02-02T00:00:00", "descriptions": [{"lang": "en", "value": "The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": 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credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI."}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Arista EOS", "version": {"version_data": [{"version_affected": "<", "version_name": "EOS-4.23", "version_value": "EOS-4.23.10"}, {"version_affected": "<", "version_name": "EOS-4.24", "version_value": "EOS-4.24.8"}, {"version_affected": "<", "version_name": "EOS-4.25", "version_value": "EOS-4.25.6"}, {"version_affected": "<", "version_name": "EOS-4.26", "version_value": "EOS-4.26.3"}]}}]}, "vendor_name": "Arista Networks"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI."}]}, "generator": 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following EOS versions:\n 4.26.3 and later releases in the 4.26.x train\n 4.25.6 and later releases in the 4.25.x train\n 4.24.8 and later releases in the 4.24.x train\n 4.23.10 and later releases in the 4.24.x train"}], "source": {"advisory": "Security Advisory 0072", "defect": ["BUG606686"], "discovery": "INTERNAL"}, "work_around": [{"lang": "en", "value": "Disallowing user certificate authentication via eAPI can be used to mitigate the vulnerability.\n\nswitch(config)#management security\nswitch(config-mgmt-security)#ssl profile profileEAPI\nswitch(config-mgmt-sec-ssl-profile-profileEAPI)#no trust certificate user.cert\nswitch(config-mgmt-sec-ssl-profile-profileEAPI)#exit"}]}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T21:47:32.819Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072"}]}]}, "cveMetadata": {"assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7", "assignerShortName": "Arista", "cveId": "CVE-2021-28503", "datePublished": "2022-02-04T22:29:27.998573Z", "dateReserved": "2021-03-16T00:00:00", "dateUpdated": "2024-09-16T23:06:02.607Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*", "matchCriteriaId": "C48331B8-808D-4080-BD74-2DC93014D10C", "versionEndIncluding": "4.22.9m", "versionStartIncluding": "4.22", "vulnerable": true}, {"criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*", "matchCriteriaId": "A3310AD8-03C5-4018-A49B-C3527B9C2ADB", "versionEndIncluding": "4.23.9", "versionStartIncluding": "4.23", "vulnerable": true}, {"criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*", "matchCriteriaId": "AFB2FFFE-6E99-4222-B3F4-854B5A4B8B0A", "versionEndIncluding": "4.24.7", "versionStartIncluding": "4.24", "vulnerable": true}, {"criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*", "matchCriteriaId": "E004CBA8-2859-4098-948B-2F5D0DD5EBA5", "versionEndIncluding": "4.25.5", "versionStartIncluding": "4.25", "vulnerable": true}, {"criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*", "matchCriteriaId": "06AA619C-3D2F-41FC-A3F1-0080F57A8F09", "versionEndIncluding": "4.26.2", "versionStartIncluding": "4.26", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI."}, {"lang": "es", "value": "El impacto de esta vulnerabilidad es que EOS eAPI de Arista puede omitir la reevaluaci\u00f3n de las credenciales del usuario cuando es usada la autenticaci\u00f3n basada en certificados, lo que permite a atacantes remotos acceder al dispositivo por medio de eAPI"}], "id": "CVE-2021-28503", "lastModified": "2024-11-21T05:59:47.697", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "[email protected]", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "[email protected]", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "[email protected]", "type": "Primary"}]}, "published": "2022-02-04T23:15:11.350", "references": [{"source": "[email protected]", "tags": ["Mitigation", "Patch", "Vendor Advisory"], "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Patch", "Vendor Advisory"], "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-305"}], "source": "[email protected]", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-287"}], "source": "[email protected]", "type": "Primary"}]}

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