{"id":"CVE-2021-21247","state":"PUBLISHED","title":"Post-Auth Unsafe Deserialization on BasePage (AJAX)","description":"OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, the application's BasePage registers an AJAX event listener (`AbstractPostAjaxBehavior`) in all pages other than the login page. This listener decodes and deserializes the `data` query parameter. We can access this listener by submitting a POST request to any page. This issue may lead to `post-auth RCE` This endpoint is subject to authentication and, therefore, requires a valid user to carry on the attack. This issue was addressed in 4.0.3 by encrypting serialization payload with secrets only known to server.","publishedAt":"2021-01-15T20:10:40.000Z","updatedAt":"2024-08-03T18:09:14.990Z","severity":{"score":9.6,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["theonedev onedev"],"affected":[{"vendor":"theonedev","product":"onedev","versions":[{"version":"< 4.0.3","status":"affected"}]}],"references":["https://github.com/theonedev/onedev/security/advisories/GHSA-6pxf-75cf-vwjp"],"weaknesses":["CWE-74"],"ingestedAt":"2026-10-29T19:47:59.168Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/21xxx/CVE-2021-21247.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-21247","state":"PUBLISHED","datePublished":"2021-01-15T20:10:40.000Z","dateUpdated":"2024-08-03T18:09:14.990Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2020-12-22T00:00:00.000Z"},"containers":{"cna":{"title":"Post-Auth Unsafe Deserialization on BasePage (AJAX)","descriptions":[{"lang":"en","value":"OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, the application's BasePage registers an AJAX event listener (`AbstractPostAjaxBehavior`) in all pages other than the login page. This listener decodes and deserializes the `data` query parameter. We can access this listener by submitting a POST request to any page. This issue may lead to `post-auth RCE` This endpoint is subject to authentication and, therefore, requires a valid user to carry on the attack. This issue was addressed in 4.0.3 by encrypting serialization payload with secrets only known to server."}],"affected":[{"vendor":"theonedev","product":"onedev","versions":[{"version":"< 4.0.3","status":"affected"}]}],"references":[{"url":"https://github.com/theonedev/onedev/security/advisories/GHSA-6pxf-75cf-vwjp","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.6,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-74","description":"CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","dateUpdated":"2021-01-15T20:10:40.000Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa"},"source":{"advisory":"GHSA-6pxf-75cf-vwjp","discovery":"UNKNOWN"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2021-21247","STATE":"PUBLIC","TITLE":"Post-Auth Unsafe Deserialization on BasePage (AJAX)"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"onedev","version":{"version_data":[{"version_value":"< 4.0.3"}]}}]},"vendor_name":"theonedev"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, the application's BasePage registers an AJAX event listener (`AbstractPostAjaxBehavior`) in all pages other than the login page. This listener decodes and deserializes the `data` query parameter. We can access this listener by submitting a POST request to any page. This issue may lead to `post-auth RCE` This endpoint is subject to authentication and, therefore, requires a valid user to carry on the attack. This issue was addressed in 4.0.3 by encrypting serialization payload with secrets only known to server."}]},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.6,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')"}]}]},"references":{"reference_data":[{"name":"https://github.com/theonedev/onedev/security/advisories/GHSA-6pxf-75cf-vwjp","refsource":"CONFIRM","url":"https://github.com/theonedev/onedev/security/advisories/GHSA-6pxf-75cf-vwjp"}]},"source":{"advisory":"GHSA-6pxf-75cf-vwjp","discovery":"UNKNOWN"}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/theonedev/onedev/security/advisories/GHSA-6pxf-75cf-vwjp","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T18:09:14.990Z"}}]}}}