Unintended SSL Certificate Validation Absence in NixOS LDAP Authentication

CVE-2017-11501 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:P/A:N

NixOS 17.03 and earlier has an unintended default absence of SSL Certificate Validation for LDAP. The users.ldap NixOS module implements user authentication against LDAP servers via a PAM module. It was found that if TLS is enabled to connect to the LDAP server with users.ldap.useTLS, peer verification will be unconditionally disabled in /etc/ldap.conf.

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