CVE Vulnerabilities

CVE-2021-39890

Improper Authentication

Published: Dec 06, 2021 | Modified: Dec 07, 2021
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

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

Name Vendor Start Version End Version
Gitlab Gitlab 14.1.1 (including) 14.1.7 (excluding)
Gitlab Gitlab 14.2.0 (including) 14.2.5 (excluding)
Gitlab Gitlab 14.3.0 (including) 14.3.0 (including)
Gitlab Gitlab 14.3.1 (including) 14.3.1 (including)
Gitlab Ubuntu esm-apps/xenial *
Gitlab Ubuntu trusty *
Gitlab Ubuntu xenial *

Potential Mitigations

References