{"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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user 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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"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": "nvd@nist.gov", "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": "psirt@arista.com", "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": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-02-04T23:15:11.350", "references": [{"source": "psirt@arista.com", "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": "psirt@arista.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-305"}], "source": "psirt@arista.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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