CVE-2022-39205

 

Published at: - 13-09-2022 09:15

Last modified: - 22-09-2022 10:15

Total changes: - 3

Description

Onedev is an open source, self-hosted Git Server with CI/CD and Kanban. In versions of Onedev prior to 7.3.0 unauthenticated users can take over a OneDev instance if there is no properly configured reverse proxy. The /git-prereceive-callback endpoint is used by the pre-receive git hook on the server to check for branch protections during a push event. It is only intended to be accessed from localhost, but the check relies on the X-Forwarded-For header. Invoking this endpoint leads to the execution of one of various git commands. The environment variables of this command execution can be controlled via query parameters. This allows attackers to write to arbitrary files, which can in turn lead to the execution of arbitrary code. Such an attack would be very hard to detect, which increases the potential impact even more. Users are advised to upgrade. There are no known workarounds for this issue.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://github.com/theonedev/onedev/releases/tag/v7.3.0
• https://github.com/theonedev/onedev/security/advisories/GHSA-4f9h-h82c-4xm2
• https://github.com/theonedev/onedev/commit/f1e97688e4e19d6de1dfa1d00e04655209d39f8e
• https://blog.sonarsource.com/onedev-remote-code-execution/

 

Keywords

NVD

 

CVE-2022-39205

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures