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CVE-2021-21246

8.6 · HIGH

OneDev is an all-in-one devops platform.

Published Jan 15, 2021CWE-862EPSS 49.05%

Overview

CVE-2021-21246 is a high-severity vulnerability. It was published on January 15, 2021 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, the REST UserResource endpoint performs a security check to make sure that only administrators can list user details. However for the `/users/{id}` endpoint there are no security checks enforced so it is possible to retrieve arbitrary user details including their Access Tokens! These access tokens can be used to access the API or clone code in the build spec via the HTTP(S) protocol. It has permissions to all projects accessible by the user account. This issue may lead to `Sensitive data leak` and leak the Access Token which can be used to impersonate the administrator or any other users. This issue was addressed in 4.0.3 by removing user info from restful api.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/theonedev/onedev/commit/a4491e5f79dc6cc96eac20972eedc8905ddf6089GitHubgithub.com/theonedev/onedev/security/advisories/GHSA-66v7-gg85-f4gxGitHubgithub.com/theonedev/onedev/commit/a4491e5f79dc6cc96eac20972eedc8905ddf6089GitHubgithub.com/theonedev/onedev/security/advisories/GHSA-66v7-gg85-f4gx

How CyberStrike helps

Frequently asked questions

What is CVE-2021-21246?

CVE-2021-21246 is a high-severity vulnerability. It was published on January 15, 2021 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2021-21246?

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-21246?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-21246?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-21246 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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