Infinite loop in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2019-18455

 

Infinite loop in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2019-18455

Published: December 3, 2019


Vulnerability identifier: #VU23355
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-18455
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop when building Nested GraphQL queries. A remote attacker can consume all available system resources and cause denial of service conditions.


Affected software

Gitlab Community Edition
GitLab Enterprise Edition

How to mitigate CVE-2019-18455

Install updates from vendor's website.

Gitlab Community Edition - update to 12.4.1
GitLab Enterprise Edition - update to 12.4.1

External References

Related Security Bulletins