Bug 25889 - pam_unix.so prevents pam_ldap.so from updating passwords
pam_unix.so prevents pam_ldap.so from updating passwords
Product: Red Hat Linux
Classification: Retired
Component: pam (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Nalin Dahyabhai
Aaron Brown
Florence RC-1
Depends On:
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Reported: 2001-02-03 15:01 EST by Christopher Barton
Modified: 2007-04-18 12:31 EDT (History)
0 users

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Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2001-02-05 17:50:40 EST
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Description Christopher Barton 2001-02-03 15:01:47 EST
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)

This works in Guinness.

passwd fails when system is configured with authconfig for LDAP.  With or 
without TLS.  I've tried OpenLDAP & iPlanet, so the server doesn't seem to 
be the problem.

passwd hangs forever after new password is successfully entered.

Reproducible: Always
Steps to Reproduce:
1. Setup LDAP server & client for LDAP authentication
2. Login to LDAP client with posixAccount on LDAP Server
3. Type passwd, enter curernt password, pick a new one twice
4. Cry

Actual Results:  Nothing happens (this is bad).

Expected Results:  LDAP server should get an updated password, passwd 
should return instead of hang.
Comment 1 Christopher Barton 2001-02-03 15:57:30 EST
Server & client are separate machines, both i386 Fisher.
Comment 2 Christopher Barton 2001-02-03 16:05:06 EST
This most likely has to do with the fact 
that /usr/share/openldap/migration/migrate_passwd.pl produces userPassword LDAP 
attributes that start with {CRYPT} but these somehow get mangled by the time 
the hash goes into the LDAP server.
Comment 3 Christopher Barton 2001-02-04 00:19:00 EST
My previous additional comment is lame, please ignore it.

When I comment password /lib/security/pam_unix.so ... out of
/etc/pam.d/system-auth, I can once again update passwords with LDAP.  I guess
the bug is related to pam & pam_unix more than a problem in pam_ldap.

This is still an annoying bug, but maybe not one for nalin.
Comment 4 Christopher Barton 2001-02-04 15:36:31 EST
When I replace /lib/security/pam_unix.so in Fisher with pam_unix.so from
Guinness, the bug disappears.

You can probably safely consider this a pam bug.  I guess nalin gets those too?
 Busy guy. :)
Comment 5 Glen Foster 2001-02-05 17:50:36 EST
We (Red Hat) should really try hard to fix this before next release.
Comment 6 Nalin Dahyabhai 2001-02-05 19:31:14 EST
Thinko in pam_unix's password-changing code.  Should be fixed in pam-0.74-5,
coming soon to a Raw Hide snapshot (ftp://ftp.redhat.com/pub/rawhide/) near you.

Please reopen this bug if you find this continues to be a problem after applying
the update.  Thanks!
Comment 7 Christopher Barton 2001-02-05 20:34:16 EST
Will definitely do, thanks!

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