Paper/Archive/CVE-2021-21247

CVE-2021-21247

theonedev onedev — Post-Auth Unsafe Deserialization on BasePage (AJAX)

Description · from the CVE record

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

ProductAffectedFixed inSource
onedev< 4.0.3–CNA

Scores by source

GitHub_M (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

References

refgithub.com/theonedev/onedev/security/advisories/GHSA-6pxf-75cf-vwjp