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  • LemonLDAP NGLemonLDAP NG
  • lemonldap-nglemonldap-ng
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  • #2250
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Issue created Jun 23, 2020 by Maxime Besson@maxbes🔧Maintainer

[CVE-2020-16093] Peer certificate not checked when using LDAPS

Environment

LemonLDAP::NG version: 2.0.8

Operating system: Debian 10

Summary

  • Configure a ldaps:// URL as ldapServer
  • Setup a self signed certificate on the LDAP server
  • It works
  • (It should not work.)

Possible fixes

Net::LDAP is insecure by default, at least on Debian Buster. We should explicitely pass verify => require when initializing it.

Fixing this is probably going to break a lot of installs. We need to create a new option for this and add a warning to release notes.

Edited Jul 29, 2020 by Maxime Besson
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