CVE-2017-11501

MEDIUM

NixOS < 17.03 - Improper Certificate Validation in LDAP PAM Module

Title source: llm
STIX 2.1

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.

References (3)

Core 3
Core References
Mailing List, Mitigation, Patch, Third Party Advisory x_refsource_confirm
http://openwall.com/lists/oss-security/2017/07/20/1
Issue Tracking, Third Party Advisory x_refsource_confirm
https://github.com/NixOS/nixpkgs/issues/27506

Scores

CVSS v3 5.9
EPSS 0.0088
EPSS Percentile 54.2%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-295
Status published
Products (1)
nixos_project/nixos < 17.03
Published Jul 20, 2017
Tracked Since Feb 18, 2026