National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-11501 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.9 MEDIUM
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.2


Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): None
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink 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/#!topic/nix-security-announce/qrDU0KH_ZRk Mitigation Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Improper Certificate Validation (CWE-295)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:nixos_project:nixos:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
17.03


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-11501
NVD Published Date:
07/20/2017
NVD Last Modified:
05/10/2019