CVE-2017-11501 json
NixOS 17.03 and earlier has an unintended default absence of SSL Certificate Validation for LDAP.
published 2017-07-20 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-3119
- cvss
- 5.9
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
0.88% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
openwall.com
/lists/oss-security/2017/07/20/1
mailing-list, mitigation, patch, third-party-advisory
- groups.google.com /forum/#%21topic/nix-security-announce/qrDU0KH_ZRk
-
github.com
/NixOS/nixpkgs/issues/27506
issue-tracking, third-party-advisory
Sources
- CVE List CVE-2017-11501
- NVD CVE-2017-11501
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.