CVE-2021-39893
GitLab vulnerability analysis and mitigation

Overview

A potential Denial of Service (DOS) vulnerability was discovered in GitLab starting with version 9.1 that allowed parsing files without authorization. The vulnerability was assigned CVE-2021-39893 and was discovered internally by the GitLab team. The issue was publicly disclosed on September 30, 2021, as part of GitLab's security release 14.3.1, 14.2.5, and 14.1.7 (GitLab Release).

Technical details

The vulnerability was classified as a medium severity issue with a CVSS score of 5.3 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). The vulnerability specifically involved unauthorized file parsing capabilities that could be exploited through API requests (GitLab Release).

Impact

The vulnerability could potentially lead to Denial of Service conditions in GitLab installations, affecting system availability through uncontrolled resource consumption (GitLab Release).

Mitigation and workarounds

The vulnerability was patched in GitLab versions 14.3.1, 14.2.5, and 14.1.7. Users were strongly recommended to upgrade their GitLab installations to one of these versions immediately to mitigate the vulnerability (GitLab Release).

Additional resources


SourceThis report was generated using AI

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