CVE-2017-17716
GitLab 9.4.x before 9.4.2 does not support LDAP SSL certificate verification, but a verify_certificates LDAP option was mentioned in the 9.4 release announcement. This issue occurred because code was not merged. This is related to use of the omniauth-ldap library and the gitlab_omniauth-ldap gem.
Date published : 2017-12-17
https://about.gitlab.com/2017/07/28/gitlab-9-dot-4-dot-2-released/