Input validation error in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2021-22166
Published: January 8, 2021
Vulnerability identifier: #VU49350
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-22166
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 attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when processing HTTP requests with custom method in Prometheus. A remote attacker can pass specially crafted HTTP request to the application and perform a denial of service (DoS) attack.
How to mitigate CVE-2021-22166
Install updates from vendor's website.