CVE-2021-21247

Critical

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.

SeverityCritical
CVSS9.6
Exploit probability—
ProductOnedev
PublishedJan 15, 2021
First seenJan 15, 2021
Weakness typeCWE-74Injection

How to fix

Update
  • onedev_project onedev4.0.3 or later

Affected products

ProductAffected versionsFixed in
onedev_project onedevv < 4.0.34.0.3

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CVE-2021-21247 · Onedev · Dark Radar