Vulnerability · Published Jan 15, 2021 · Assigned by GitHub_M
CVE-2021-21247Post-Auth Unsafe Deserialization on BasePage (AJAX)
Critical 9.6
In plain English
A critical-severity injection in onedev from theonedev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities).
Official 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.
Affected products (as reported)
Weakness: CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
References
- https://github.com/theonedev/onedev/security/advisories/GHSA-6pxf-75cf-vwjp x_refsource_CONFIRM