CVE-2021-21247

HIGH EPSS 71.1%
Published Jan 15, 20215y ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Jan 15, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
71.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-502 Deserialization of Untrusted Data Validation
CWE-74

Affected Products 1

VendorProductVersionRange
onedev_projectonedev* <4.0.3

References 1

  • github.com https://github.com/theonedev/onedev/security/advisories/GHSA-6pxf-75cf-vwjp
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.