CVE Vulnerabilities

CVE-2021-39890

Improper Authentication

Published: Dec 06, 2021 | Modified: Nov 21, 2024
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
root.io logo minimus.io logo echo.ai logo

It was possible to bypass 2FA for LDAP users and access some specific pages with Basic Authentication in GitLab 14.1.1 and above.

Weakness

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Software

NameVendorStart VersionEnd Version
GitlabGitlab14.1.1 (including)14.1.7 (excluding)
GitlabGitlab14.2.0 (including)14.2.5 (excluding)
GitlabGitlab14.3.0 (including)14.3.0 (including)
GitlabGitlab14.3.1 (including)14.3.1 (including)
GitlabUbuntuesm-apps/xenial*
GitlabUbuntutrusty*
GitlabUbuntuxenial*

Potential Mitigations

References