Input validation error in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2021-22236
Published: August 10, 2021
Vulnerability identifier: #VU55760
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-22236
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GitLab, Inc
Affected software:
Gitlab Community Edition
GitLab Enterprise Edition
Gitlab Community Edition
GitLab Enterprise Edition
Detailed vulnerability description
The vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to improper handling of OAuth client IDs. New subscriptions generated OAuth tokens on an incorrect OAuth client application. As a result, a remote user can obtain access to another user account.
How to mitigate CVE-2021-22236
Install updates from vendor's website.