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CVE-2017-11501

5.9 · MEDIUM

NixOS 17.03 and earlier has an unintended default absence of SSL Certificate Validation for LDAP.

Published Jul 20, 2017CWE-295EPSS 0.88%

Overview

CVE-2017-11501 is a medium-severity vulnerability. It was published on July 20, 2017 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refopenwall.com/lists/oss-security/2017/07/20/1GitHubgithub.com/NixOS/nixpkgs/issues/27506Refgroups.google.com/forum/#%21topic/nix-security-announce/qrDU0KH_ZRkRefopenwall.com/lists/oss-security/2017/07/20/1GitHubgithub.com/NixOS/nixpkgs/issues/27506Refgroups.google.com/forum/#%21topic/nix-security-announce/qrDU0KH_ZRk

How CyberStrike helps

Frequently asked questions

What is CVE-2017-11501?

CVE-2017-11501 is a medium-severity vulnerability. It was published on July 20, 2017 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

How severe is CVE-2017-11501?

This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-11501?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-11501?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-11501 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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