Description
An issue was discovered in GitLab CE/EE affecting all versions starting from 16.4 prior to 17.5.5, starting from 17.6 prior to 17.6.3, and starting from 17.7 prior to 17.7.1. When a user is created via the SAML provider, the external groups setting overrides the external provider configuration. As a result, the user may not be marked as external thereby giving those users access to internal projects or groups.
Problem types
CWE-286: Incorrect User Management
Product status
16.4 (semver) before 17.5.5
17.6 (semver) before 17.6.3
17.7 (semver) before 17.7.1
Credits
This vulnerability has been discovered internally by GitLab team member [Drew Blessing](https://gitlab.com/dblessing).
References
gitlab.com/gitlab-org/gitlab/-/issues/479165 (GitLab Issue #479165)
about.gitlab.com/...08/patch-release-gitlab-17-7-1-released/