[CentOS] "undefined symbol: _pam_make_env"

ness nessup at gmail.com
Sat Nov 25 02:08:36 UTC 2006


A while ago I downloaded and compiled PAM 0.99.x and installed it over 
the default CentOS PAM installation. Of course, this premature decision 
led to root and FTP access being fully locked down and inaccessible.

When I  `su -`, it prints "su: incorrect password" before it gives me 
the chance to type a password. When I `sudo su -`, it prints "sudo: 
pam_authenticate: Module is unknown". The most elaborate error from 
that point on is in /var/log/secure, which prints the following when I 
supply valid FTP log in credentials:

Nov 24 19:57:07 ded sudo: PAM unable to 
Nov 24 19:57:07 ded sudo: PAM [error: /lib/security/pam_stack.so: 
undefined symbol: _pam_make_env]
Nov 24 19:57:07 ded sudo: PAM adding faulty module: 

  I've tried reinstalling PAM via yum, it's dependencies, and it's 
furthest dependencies with no apparent success. Does anyone know how 
this can be fixed without formatting the entire system?


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