CVE-2018-17455
Description
An issue was discovered in GitLab Enterprise Edition before 11.1.7, 11.2.x before 11.2.4, and 11.3.x before 11.3.1. Attackers could obtain sensitive information about group names, avatars, LDAP settings, and descriptions via an insecure direct object reference to the "merge request approvals" feature.
Summary dbcve.org
An Insecure Direct Object Reference (IDOR) vulnerability in GitLab Enterprise Edition's merge request approvals feature allows unauthorized attackers to access sensitive group information including names, avatars, LDAP settings, and descriptions. This is a HIGH severity (CVSS 7.5) information disclosure issue affecting versions 11.1.x before 11.1.7, 11.2.x before 11.2.4, and 11.3.x before 11.3.1.
Mitigation
Upgrade GitLab Enterprise Edition to version 11.1.7, 11.2.4, 11.3.1 or later. Alternatively, if upgrading is not immediately feasible, review access controls on the merge request approvals API endpoints and implement additional authorization checks.