GitLab 5.0 before 5.4.2, Community Edition before 6.2.4, Enterprise Edition before 6.2.1 and gitlab-shell before 1.7.8 allows remote attackers to execute arbitrary code via a crafted change using SSH.Referenceshttp://www.openwall.com/lists/oss-security/2013/11/15/4https://www.gitlab.com/2013/11/14/multiple-critical-vulnerabilities-in-gitlab/
