Vulnerability · Published Jan 15, 2021 · Assigned by GitHub_M

CVE-2021-21245Pre-Auth Arbitrary File Upload

Critical 10.0

In plain English

A critical-severity unrestricted file upload in onedev from theonedev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities).

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)1.2%top 31.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, AttachmentUploadServlet also saves user controlled data (`request.getInputStream()`) to a user specified location (`request.getHeader("File-Name")`). This issue may lead to arbitrary file upload which can be used to upload a WebShell to OneDev server. This issue is addressed in 4.0.3 by only allowing uploaded file to be in attachments folder. The webshell issue is not possible as OneDev never executes files in attachments folder.

Affected products (as reported)

Vendor	Product	Versions
theonedev	onedev	< 4.0.3

Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

References

https://github.com/theonedev/onedev/security/advisories/GHSA-62m2-38q5-96w9 x_refsource_CONFIRM
https://github.com/theonedev/onedev/commit/0c060153fb97c0288a1917efdb17cc426934dacb x_refsource_MISC