Defect #714

LDAP authentication without password

Added by Tibor Toth about 10 years ago. Updated almost 10 years ago.

Status:ClosedStart date:2008-02-22
Priority:HighDue date:
Assignee:-% Done:


Category:Accounts / authentication
Target version:0.7
Resolution:Fixed Affected version:


I configured LDAP authentication using ActiveDirectory.

Users are able to log in by their username/password, but they also can log in with empty password.

If they enter wrong password (which is not an empty string) they got the "Invalid user or password" message.

I think the problem is in ruby-net-ldap. It is used in /app/models/auth_source_ldap.rb around line 50:

# authenticate user
ldap_con = initialize_ldap_con(dn, password)
return nil unless ldap_con.bind

ldap_con.bind returns true when empty string was given as password.

Redmine version: v0.6.3
ruby-net-ldap version: 0.0.4

Associated revisions

Revision 1169
Added by Jean-Philippe Lang about 10 years ago

Fixed: LDAP authentication without password may be possible (#714).

Revision 1199
Added by Jean-Philippe Lang about 10 years ago

Fix LDAP authentication (#714, broken by r1194).


#1 Updated by Sven Schuchmann about 10 years ago

You are right. The same thing here.
Authentication againt a Novell eDirecoty (LDAP)
with an empty password let's everyone in...

#2 Updated by Witold Oleksiak about 10 years ago

Confirmed - the same behavior when authenticating against MS Active Directory...

#3 Updated by Jean-Philippe Lang about 10 years ago

  • Status changed from New to Resolved
  • Resolution set to Fixed

I can not reproduce this problem with openldap. Anyway, the fix is committed in trunk (r1169) and 0.6 branch (r1170).

0.6.3 users can apply this patch to fix it:

#4 Updated by Tibor Toth about 10 years ago

Thank you, the fix is working.

#5 Updated by Jean-Philippe Lang almost 10 years ago

  • Status changed from Resolved to Closed
  • Target version set to 0.7

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