{"id":"CVE-2021-28506","state":"PUBLISHED","title":"An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device.","description":"An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device.","publishedAt":"2022-01-14T19:04:50.282Z","updatedAt":"2024-09-16T22:09:48.017Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","source":"Arista"},"assigner":"Arista","products":["Arista Networks EOS"],"affected":[{"vendor":"Arista Networks","product":"EOS","versions":[{"version":"4.26.2F","status":"affected","lessThanOrEqual":"4.26.0","versionType":"custom"},{"version":"4.25.5.1M","status":"affected","lessThanOrEqual":"4.25.5","versionType":"custom"},{"version":"4.25.4M","status":"affected","lessThanOrEqual":"4.25.4","versionType":"custom"},{"version":"4.25.3","status":"affected","lessThanOrEqual":"4.25.0","versionType":"custom"},{"version":"4.24.7M","status":"affected","lessThanOrEqual":"4.24.2F","versionType":"custom"}]}],"references":["https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071"],"weaknesses":["CWE-285"],"ingestedAt":"2026-10-29T19:48:19.096Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/28xxx/CVE-2021-28506.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-28506","state":"PUBLISHED","datePublished":"2022-01-14T19:04:50.282Z","dateUpdated":"2024-09-16T22:09:48.017Z","assignerShortName":"Arista","assignerOrgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","dateReserved":"2021-03-16T00:00:00.000Z"},"containers":{"cna":{"title":"An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device.","descriptions":[{"lang":"en","value":"An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device."}],"affected":[{"vendor":"Arista Networks","product":"EOS","versions":[{"version":"4.26.2F","status":"affected","lessThanOrEqual":"4.26.0","versionType":"custom"},{"version":"4.25.5.1M","status":"affected","lessThanOrEqual":"4.25.5","versionType":"custom"},{"version":"4.25.4M","status":"affected","lessThanOrEqual":"4.25.4","versionType":"custom"},{"version":"4.25.3","status":"affected","lessThanOrEqual":"4.25.0","versionType":"custom"},{"version":"4.24.7M","status":"affected","lessThanOrEqual":"4.24.2F","versionType":"custom"}]}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-285","description":"CWE-285 Improper Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Arista","dateUpdated":"2022-01-14T19:04:50.000Z","orgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7"},"datePublic":"2022-01-11T00:00:00.000Z","solutions":[{"lang":"en","value":"The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release. \nCVE-2021-28506 has been fixed in the following releases:\n4.26.3M and later releases in the 4.26.x train\n4.25.6M and later releases in the 4.25.x train\n4.25.4.1M and later releases in the 4.25.4.x train\n4.24.8M and later releases in the 4.24.x train"}],"source":{"advisory":"71","defect":["BUG","606192"],"discovery":"EXTERNAL"},"workarounds":[{"lang":"en","value":"No mitigation options available"},{"lang":"en","value":"To mitigate CVE-2021-28506 with the continued use of the affected agents, a hotfix employing a proxy service can be deployed. The proxy is configured behind the gNMI/gNOI or RESTCONF server. The hotfix can be downloaded at https://www.arista.com/en/support/advisories-notices/sa-download/?sa=71-SecurityAdvisory0071Hotfix.i386.swix for 32 bit systems and https://www.arista.com/en/support/advisories-notices/sa-download/?sa=71-SecurityAdvisory0071Hotfix.x86_64.swix for 64 bit systems."}],"x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"psirt@arista.com","DATE_PUBLIC":"2022-01-11T22:22:00.000Z","ID":"CVE-2021-28506","STATE":"PUBLIC","TITLE":"An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device."},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"EOS","version":{"version_data":[{"version_affected":"<=","version_name":"4.26.2F","version_value":"4.26.0"},{"version_affected":"<=","version_name":"4.25.5.1M","version_value":"4.25.5"},{"version_affected":"<=","version_name":"4.25.4M","version_value":"4.25.4"},{"version_affected":"<=","version_name":"4.25.3","version_value":"4.25.0"},{"version_affected":"<=","version_name":"4.24.7M","version_value":"4.24.2F"}]}}]},"vendor_name":"Arista Networks"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device."}]},"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-285 Improper Authorization"}]}]},"references":{"reference_data":[{"name":"https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071","refsource":"MISC","url":"https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071"}]},"solution":[{"lang":"en","value":"The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release. \nCVE-2021-28506 has been fixed in the following releases:\n4.26.3M and later releases in the 4.26.x train\n4.25.6M and later releases in the 4.25.x train\n4.25.4.1M and later releases in the 4.25.4.x train\n4.24.8M and later releases in the 4.24.x train"}],"source":{"advisory":"71","defect":["BUG","606192"],"discovery":"EXTERNAL"},"work_around":[{"lang":"en","value":"No mitigation options available"},{"lang":"en","value":"To mitigate CVE-2021-28506 with the continued use of the affected agents, a hotfix employing a proxy service can be deployed. The proxy is configured behind the gNMI/gNOI or RESTCONF server. The hotfix can be downloaded at https://www.arista.com/en/support/advisories-notices/sa-download/?sa=71-SecurityAdvisory0071Hotfix.i386.swix for 32 bit systems and https://www.arista.com/en/support/advisories-notices/sa-download/?sa=71-SecurityAdvisory0071Hotfix.x86_64.swix for 64 bit systems."}]}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T21:47:32.674Z"}}]}}}