CVE-2021-21247

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Summary:

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.

Reference Links(if available):

  • https://github.com/theonedev/onedev/security/advisories/GHSA-6pxf-75cf-vwjp
  • CVSS Score (if available)

    v2: / HIGH

    v3: /

    Links to Exploits(if available)