CVE-2017-17716

Severity: medium (CVSS 5.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-12-17 · updated 2026-06-17
Weakness: CWE-295

Description

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.

Affected products

GitLab: 9.4.0, 9.4.0-rc1, 9.4.0-rc2, 9.4.0-rc3, 9.4.0-rc4, 9.4.0-rc5 (+2)

References

https://about.gitlab.com/2017/07/22/gitlab-9-4-released/#security---add-ldap-ssl-certificate-verification
https://about.gitlab.com/2017/07/28/gitlab-9-dot-4-dot-2-released/
https://gitlab.com/gitlab-org/gitlab-ce/issues/30420
https://about.gitlab.com/2017/07/22/gitlab-9-4-released/#security---add-ldap-ssl-certificate-verification
https://about.gitlab.com/2017/07/28/gitlab-9-dot-4-dot-2-released/
https://gitlab.com/gitlab-org/gitlab-ce/issues/30420

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