CVE-2017-11501

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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.15%
Third-Party Advisory openwall.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://openwall.com/lists/oss-security/2017/07/20/1 mailing list patch mitigation third party advisory
https://groups.google.com/forum/#%21topic/nix-security-announce/qrDU0KH_ZRk
https://github.com/NixOS/nixpkgs/issues/27506 issue tracking third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-11501?
CVE-2017-11501 has been scored as a medium severity vulnerability.
How to fix CVE-2017-11501?
To fix CVE-2017-11501, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-11501 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-11501 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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