LDAP logins with non us-ascii characters in passwords fail

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Hi,

We're experiencing problems authenticating users with complex characters (8 bit character outside the us-ascii set e.g. pound-sterling symbol) in their password.

We're running Apache 2.2.3 on UNIX and, for Kerberos, running kinit from the command line authenticates users correctly (including users with complex characters in their password).  Through Apache though using Kerberos or LDAP, we're getting login failures only for this subset of users.  For LDAP authentication, mod_authz_ldap logs:

[Fri Mar 26 14:24:33 2010] [error] [client 128.240.56.105] [10639] bind as CN=user,OU=Users,DC=ncl,DC=ac,DC=uk failed: 49
[Fri Mar 26 14:24:33 2010] [error] [client 128.240.56.105] [10639] basic LDAP authentication of user 'user' failed

This would suggest that some translation of the password between the basic-auth and the LDAP server is not working.  Because we can use kinit successfully on the command line for Kerberos I'm pretty much ruling out the operating system (CENTOS) and was wondering if anyone has any experience of this kind of problem with Apache?

Or LDAP servers are windows active directory, a mix of Windows 2003 and 2008 Server.  The web servers are running CENTOS Linux with an off-the-shelf CENTOS Apache and mod_authz_ldap.

Is anyone experiencing similar problems?

Thanks,

Chris
Newcastle University

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