CVE-2021-21242

Pre-Auth Unsafe Deserialization on AttachmentUploadServet

Description

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

Categories

10.0
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 40.37% Top 5%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: theonedev onedev
Published at:
Updated at:

References

Link Tags
https://github.com/theonedev/onedev/security/advisories/GHSA-5q3q-f373-2jv8 third party advisory
https://github.com/theonedev/onedev/commit/f864053176c08f59ef2d97fea192ceca46a4d9be third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-21242?
CVE-2021-21242 has been scored as a critical severity vulnerability.
How to fix CVE-2021-21242?
To fix CVE-2021-21242, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21242 being actively exploited in the wild?
It is possible that CVE-2021-21242 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~40% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21242?
CVE-2021-21242 affects theonedev onedev.
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