CVE-2021-21242

high-risk
Published 2021-01-15

OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is a critical vulnerability which can lead to pre-auth remote code execution. AttachmentUploadServlet deserializes untrusted data from the `Attachment-Support` header. This Servlet does not enforce any authentication or authorization checks. This issue may lead to pre-auth remote code execution. This issue was fixed in 4.0.3 by removing AttachmentUploadServlet and not using deserialization

Do I need to act?

!
40.4% chance of exploitation in next 30 days
EPSS score — higher than 60% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: 4bd71941974a1b077e955616d7ba3da6fd21670c, f864053176c08f59ef2d97fea192ceca46a4d9be
10
CVSS 10.0/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Onedev Project

References (4)

Patch https://github.com/theonedev/onedev/commit/f864053176c08f59ef2d97fea192ceca46a4d...
Third Party Advisory https://github.com/theonedev/onedev/security/advisories/GHSA-5q3q-f373-2jv8
Patch https://github.com/theonedev/onedev/commit/f864053176c08f59ef2d97fea192ceca46a4d...
Third Party Advisory https://github.com/theonedev/onedev/security/advisories/GHSA-5q3q-f373-2jv8
55
/ 100
high-risk
Severity 33/34 · Critical
Exploitability 17/34 · Moderate
Exposure 5/34 · Minimal