GitLab Omnibus CVE-2019-15741 Privilege Escalation Vulnerability

Description

GitLab Omnibus is prone to a remote privilege-escalation vulnerability. A remote attacker can exploit this issue to gain elevated privileges. Versions prior to GitLab 12.2.3, 12.1.8, and 12.0.8 are vulnerable.

Technologies Affected

• Gitlab GitLab 7.4
• Gitlab GitLab 7.4.2
• Gitlab GitLab 7.4.3
• Gitlab GitLab 8.10.0
• Gitlab GitLab 8.10.12
• Gitlab GitLab 8.10.13
• Gitlab GitLab 8.11.0
• Gitlab GitLab 8.11.10
• Gitlab GitLab 8.11.9
• Gitlab GitLab 8.12.0
• Gitlab GitLab 8.12.7
• Gitlab GitLab 8.12.8
• Gitlab GitLab 8.13.0
• Gitlab GitLab 8.13.2
• Gitlab GitLab 8.13.3
• Gitlab GitLab 8.15.8
• Gitlab GitLab 8.16.8
• Gitlab GitLab 8.17.4
• Gitlab GitLab 8.2.0
• Gitlab GitLab 8.2.1
• Gitlab GitLab 8.2.2
• Gitlab GitLab 8.2.3
• Gitlab GitLab 8.2.4
• Gitlab GitLab 8.2.5
• Gitlab GitLab 8.3.0
• Gitlab GitLab 8.3.8
• Gitlab GitLab 8.3.9
• Gitlab GitLab 8.4.0
• Gitlab GitLab 8.4.10
• Gitlab GitLab 8.4.9
• Gitlab GitLab 8.5.0
• Gitlab GitLab 8.5.11
• Gitlab GitLab 8.5.12
• Gitlab GitLab 8.6.0
• Gitlab GitLab 8.6.7
• Gitlab GitLab 8.6.8
• Gitlab GitLab 8.7.0
• Gitlab GitLab 8.7.1
• Gitlab GitLab 8.9.0
• Gitlab GitLab 8.9.10
• Gitlab GitLab 8.9.11
• Gitlab GitLab 9.4
• Gitlab GitLab 9.4.2
• Gitlab GitLab Community Edition 10.1
• Gitlab GitLab Community Edition 10.3
• Gitlab GitLab Community Edition 10.5.0
• Gitlab GitLab Community Edition 10.5.8
• Gitlab GitLab Community Edition 10.6.0
• Gitlab GitLab Community Edition 10.6.5
• Gitlab GitLab Community Edition 10.7.0
• Gitlab GitLab Community Edition 10.7.2
• Gitlab GitLab Community Edition 11.0
• Gitlab GitLab Community Edition 11.3.0
• Gitlab GitLab Community Edition 11.3.11
• Gitlab GitLab Community Edition 11.3.12
• Gitlab GitLab Community Edition 11.3.13
• Gitlab GitLab Community Edition 11.3.14
• Gitlab GitLab Community Edition 11.4
• Gitlab GitLab Community Edition 11.4.0
• Gitlab GitLab Community Edition 11.4.10
• Gitlab GitLab Community Edition 11.4.11
• Gitlab GitLab Community Edition 11.4.12
• Gitlab GitLab Community Edition 11.4.8
• Gitlab GitLab Community Edition 11.4.9
• Gitlab GitLab Community Edition 11.5
• Gitlab GitLab Community Edition 11.5.0
• Gitlab GitLab Community Edition 11.5.1
• Gitlab GitLab Community Edition 11.5.2
• Gitlab GitLab Community Edition 11.5.3
• Gitlab GitLab Community Edition 11.5.4
• Gitlab GitLab Community Edition 11.5.5
• Gitlab GitLab Community Edition 12.0
• Gitlab GitLab Community Edition 12.1
• Gitlab GitLab Community Edition 12.2
• Gitlab GitLab Enterprise Edition 10.1
• Gitlab GitLab Enterprise Edition 10.3
• Gitlab GitLab Enterprise Edition 10.5.0
• Gitlab GitLab Enterprise Edition 10.5.8
• Gitlab GitLab Enterprise Edition 10.6.0
• Gitlab GitLab Enterprise Edition 10.6.5
• Gitlab GitLab Enterprise Edition 10.7.0
• Gitlab GitLab Enterprise Edition 10.7.2
• Gitlab GitLab Enterprise Edition 11.0
• Gitlab GitLab Enterprise Edition 11.3.0
• Gitlab GitLab Enterprise Edition 11.3.11
• Gitlab GitLab Enterprise Edition 11.3.12
• Gitlab GitLab Enterprise Edition 11.3.13
• Gitlab GitLab Enterprise Edition 11.3.14
• Gitlab GitLab Enterprise Edition 11.4
• Gitlab GitLab Enterprise Edition 11.4.0
• Gitlab GitLab Enterprise Edition 11.4.10
• Gitlab GitLab Enterprise Edition 11.4.11
• Gitlab GitLab Enterprise Edition 11.4.12
• Gitlab GitLab Enterprise Edition 11.4.8
• Gitlab GitLab Enterprise Edition 11.4.9
• Gitlab GitLab Enterprise Edition 11.5
• Gitlab GitLab Enterprise Edition 11.5.0
• Gitlab GitLab Enterprise Edition 11.5.1
• Gitlab GitLab Enterprise Edition 11.5.2
• Gitlab GitLab Enterprise Edition 11.5.3
• Gitlab GitLab Enterprise Edition 11.5.4
• Gitlab GitLab Enterprise Edition 11.5.5
• Gitlab GitLab Enterprise Edition 11.7.10
• Gitlab GitLab Enterprise Edition 11.7.11
• Gitlab GitLab Enterprise Edition 11.8.0
• Gitlab GitLab Enterprise Edition 11.8.6
• Gitlab GitLab Enterprise Edition 11.8.7
• Gitlab GitLab Enterprise Edition 11.9.0
• Gitlab GitLab Enterprise Edition 11.9.6
• Gitlab GitLab Enterprise Edition 11.9.7
• Gitlab GitLab Enterprise Edition 12.0
• Gitlab GitLab Enterprise Edition 12.1
• Gitlab GitLab Enterprise Edition 12.2

Recommendations

Block external access at the network boundary, unless external parties require service.
If global access isn’t needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.

Run all software as a nonprivileged user with minimal access rights.
When possible, run all software as a user with minimal privileges and limited access to system resources. Use additional precautions such as restrictive environments to insulate software that may potentially handle malicious content.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This may indicate exploit attempts or activity that results from successful exploits.

Updates are available. Please see the references or vendor advisory for more information.