Deserialization in Onedev Project
CVE-2021-21242
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
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.742 (99.5th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.742 · newest: 0.742 · change: 0.000
Affected products
- Onedev Project
- Theonedev Onedev — versions < 4.0.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/theonedev/onedev/security/advisories/GHSA-5q3q-f373-2jv8 (Third Party Advisory)
- github.com/theonedev/onedev/commit/f864053176c08f59ef2d97fea192ceca46a4d9be (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21242?
- CVE-2021-21242 is a critical-severity vulnerability in Onedev Project, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 10.0/10. Published 2021-01-15.
- How severe is CVE-2021-21242?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2021-21242 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.