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CVE-2021-39899

2.9 · LOW

In all versions of GitLab CE/EE, an attacker with physical access to a user’s machine may brute force the user’s password via the change password function.

Published Oct 4, 2021CWE-640EPSS 0.26%

Overview

CVE-2021-39899 is a low-severity vulnerability. It was published on October 4, 2021 and has a CVSS 3.1 base score of 2.9 (LOW).

This vulnerability has a CVSS 3.1 base score of 2.9, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In all versions of GitLab CE/EE, an attacker with physical access to a user’s machine may brute force the user’s password via the change password function. There is a rate limit in place, but the attack may still be conducted by stealing the session id from the physical compromise of the account and splitting the attack over several IP addresses and passing in the compromised session value from these various locations.

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

Refgitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39899.jsonRefgitlab.com/gitlab-org/gitlab/-/issues/339154Refgitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39899.jsonRefgitlab.com/gitlab-org/gitlab/-/issues/339154

How CyberStrike helps

Frequently asked questions

What is CVE-2021-39899?

CVE-2021-39899 is a low-severity vulnerability. It was published on October 4, 2021 and has a CVSS 3.1 base score of 2.9 (LOW).

How severe is CVE-2021-39899?

This vulnerability has a CVSS 3.1 base score of 2.9, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-39899?

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-2021-39899?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-39899 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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