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CVE-2021-21248

9.6 · CRITICAL

OneDev is an all-in-one devops platform.

Published Jan 15, 2021CWE-74EPSS 1.47%

Overview

CVE-2021-21248 is a critical-severity vulnerability. It was published on January 15, 2021 and has a CVSS 3.1 base score of 9.6 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is a critical vulnerability involving the build endpoint parameters. InputSpec is used to define parameters of a Build spec. It does so by using dynamically generated Groovy classes. A user able to control job parameters can run arbitrary code on OneDev's server by injecting arbitrary Groovy code. The ultimate result is in the injection of a static constructor that will run arbitrary code. For a full example refer to the referenced GHSA. This issue was addressed in 4.0.3 by escaping special characters such as quote from user input.

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/39d95ab8122c5d9ed18e69dc024870cae08d2d60GitHubgithub.com/theonedev/onedev/security/advisories/GHSA-gwp4-5498-hv5fGitHubgithub.com/theonedev/onedev/commit/39d95ab8122c5d9ed18e69dc024870cae08d2d60GitHubgithub.com/theonedev/onedev/security/advisories/GHSA-gwp4-5498-hv5f

How CyberStrike helps

Frequently asked questions

What is CVE-2021-21248?

CVE-2021-21248 is a critical-severity vulnerability. It was published on January 15, 2021 and has a CVSS 3.1 base score of 9.6 (CRITICAL).

How severe is CVE-2021-21248?

This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-21248?

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-2021-21248?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-21248 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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