{"id":"CVE-2017-11501","aliases":["EUVD-2017-3119","GHSA-9ggv-74q3-4mc4"],"status":"published","title":"NixOS 17.03 and earlier has an unintended default absence of SSL Certificate Validation for LDAP....","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.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00875,"percentile":0.59195,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2017-07-20T23:00:00Z","modified":"2026-06-17T01:01:54Z","products":[{"vendor":"nixos_project","product":"nixos"}],"references":[{"url":"http://openwall.com/lists/oss-security/2017/07/20/1","tags":["x_refsource_CONFIRM","x_transferred","Mailing List","Mitigation","Patch","Third Party Advisory"]},{"url":"https://groups.google.com/forum/#%21topic/nix-security-announce/qrDU0KH_ZRk","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://github.com/NixOS/nixpkgs/issues/27506","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11501"},{"url":"https://groups.google.com/forum/#!topic/nix-security-announce/qrDU0KH_ZRk"},{"url":"https://github.com/advisories/GHSA-9ggv-74q3-4mc4"}],"sources":{"cve":[{"id":"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.","status":"published","published":"2017-07-20T23:00:00Z","modified":"2024-08-05T18:12:40.13Z","updated_at":"2026-11-02T14:33:20.171335Z"}],"euvd":[{"id":"EUVD-2017-3119","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.","status":"published","published":"2017-07-20T23:00:00Z","modified":"2024-08-05T18:12:40Z","updated_at":"2026-11-03T02:23:23.645757Z"}],"ghsa":[{"id":"GHSA-9ggv-74q3-4mc4","title":"NixOS 17.03 and earlier has an unintended default absence of SSL Certificate Validation for LDAP....","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.","status":"published","published":"2022-05-14T01:04:18Z","modified":"2025-04-20T03:41:15Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T15:01:49.006624Z"}],"nvd":[{"id":"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.","status":"published","published":"2017-07-20T23:29:00.247Z","modified":"2026-06-17T01:01:54.237Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:03:54.862898Z"}]}}