CVE-2017-11501 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

http://openwall.com/lists/oss-security/2017/07/20/1 https://github.com/NixOS/nixpkgs/issues/27506 https://groups.google.com/forum/!topic/nix-security-announce/qrDU0KH_ZRk

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

5.9