5.9
MEDIUM
CVE-2017-11501
NixOS LDAP TLS Certificate Verification Weakness
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.

INFO

Published Date :

July 20, 2017, 11:29 p.m.

Last Modified :

Nov. 7, 2023, 2:38 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.2
Affected Products

The following products are affected by CVE-2017-11501 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Nixos_project nixos
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2017-11501.

URL Resource
http://openwall.com/lists/oss-security/2017/07/20/1 Mailing List Mitigation Patch Third Party Advisory
https://github.com/NixOS/nixpkgs/issues/27506 Issue Tracking Third Party Advisory
https://groups.google.com/forum/#%21topic/nix-security-announce/qrDU0KH_ZRk

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2017-11501 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2017-11501 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://groups.google.com/forum/#%21topic/nix-security-announce/qrDU0KH_ZRk [No types assigned]
    Removed Reference MITRE https://groups.google.com/forum/#!topic/nix-security-announce/qrDU0KH_ZRk
  • Modified Analysis by [email protected]

    May. 10, 2019

    Action Type Old Value New Value
    Changed Reference Type http://openwall.com/lists/oss-security/2017/07/20/1 Mailing List, Patch, Third Party Advisory http://openwall.com/lists/oss-security/2017/07/20/1 Mailing List, Mitigation, Patch, Third Party Advisory
    Changed Reference Type https://github.com/NixOS/nixpkgs/issues/27506 Issue Tracking, Patch, Third Party Advisory https://github.com/NixOS/nixpkgs/issues/27506 Issue Tracking, Third Party Advisory
    Changed Reference Type https://groups.google.com/forum/#!topic/nix-security-announce/qrDU0KH_ZRk No Types Assigned https://groups.google.com/forum/#!topic/nix-security-announce/qrDU0KH_ZRk Mitigation, Third Party Advisory
  • CVE Modified by [email protected]

    Aug. 13, 2018

    Action Type Old Value New Value
    Removed Reference https://groups.google.com/forum/#%21topic/nix-security-announce/qrDU0KH_ZRk [Patch, Third Party Advisory]
    Added Reference https://groups.google.com/forum/#!topic/nix-security-announce/qrDU0KH_ZRk [No Types Assigned]
  • Initial Analysis by [email protected]

    Jul. 25, 2017

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
    Added CVSS V3 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type http://openwall.com/lists/oss-security/2017/07/20/1 No Types Assigned http://openwall.com/lists/oss-security/2017/07/20/1 Mailing List, Patch, Third Party Advisory
    Changed Reference Type https://github.com/NixOS/nixpkgs/issues/27506 No Types Assigned https://github.com/NixOS/nixpkgs/issues/27506 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://groups.google.com/forum/#%21topic/nix-security-announce/qrDU0KH_ZRk No Types Assigned https://groups.google.com/forum/#%21topic/nix-security-announce/qrDU0KH_ZRk Patch, Third Party Advisory
    Added CWE CWE-295
    Added CPE Configuration OR *cpe:2.3:o:nixos_project:nixos:17.03:*:*:*:*:*:*:* (and previous)
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2017-11501 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2017-11501 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.16 }} 0.01%

score

0.51022

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability