Bug 447881 - nss_ldap security update breaks bash
nss_ldap security update breaks bash
Status: CLOSED DUPLICATE of bug 448014
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: nss_ldap (Show other bugs)
All Linux
low Severity urgent
: rc
: ---
Assigned To: Nalin Dahyabhai
Depends On:
  Show dependency treegraph
Reported: 2008-05-22 05:54 EDT by Frode Nordahl
Modified: 2008-05-28 18:09 EDT (History)
4 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2008-05-28 18:09:48 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

  None (edit)
Description Frode Nordahl 2008-05-22 05:54:32 EDT
Description of problem:
Child processes of bash have problems talking to the LDAP server. strace of a process shows that it 
attempts to reconnect to the LDAP server and fails. However, a strace of a process doing the same after 
downgrading does not show communication with the LDAP server at all.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Log in as a user (not root) on a system using nss_ldap on a 32bit system
2. A=`echo hello`; echo $A
Actual results:
Blank output

Expected results:

Additional info:
Downgrading to nss_ldap-253-5.el5 fixes the problem
Comment 1 David Chuha 2008-05-22 13:20:47 EDT
I can confirm this after upgrading to nss_ldap-253-12.el5.  It also appears that
running nscd will work around the problem until the issue is resolved.
Comment 2 Stephen John Smoogen 2008-05-22 18:13:30 EDT
In our environment, running nscd will allow for logins, but does not allow for su.
Comment 3 Jason Daly 2008-05-22 18:15:51 EDT
I'm having similar issues.  After upgrading to RHEL 5.2, ordinary users can no
longer log in (X or console), although authentication seems to succeed.  A look
at /var/log/secure shows the session open, then immediately close.  Logging in
remotely via ssh produces an interactive session, but almost any shell command I
try (tcsh in this case) results in a "Broken pipe" error message.

Clients are configured to use ldaps to connect to the directory server. 
Downgrading the configuration to use plain ldap fixes the problem.  Downgrading
to nss_ldap-253-5.el5 also fixes the problem.
Comment 4 Nalin Dahyabhai 2008-05-28 18:09:48 EDT

*** This bug has been marked as a duplicate of 448014 ***

Note You need to log in before you can comment on or make changes to this bug.