Red Hat Bugzilla – Bug 185314
Too weak dictionary for cracklib?
Last modified: 2007-11-30 17:07:23 EST
Description of problem:
Version-Release number of selected component (if applicable):
Recently, we faced many successful attempt of SSH brute force attack to the user
with simple username (root, oracle, etc...) and the main reason is that they all
use password with some simple pattern (such as QWERTY keyboard pattern like
1q2w3e4r, qawsedrf, etc...). I uploaded dictionary file left from their SSH
brute force program in our server with this issue.
Just try "1q2w3e4r" as password, it pass without any warning.
Steps to Reproduce:
1. Just type simple password when you change the password
cracklib let simple password pass successfully
cracklib should warn about patterned-password
Created attachment 126053 [details]
Password files left from SSH brute force program
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release. Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update
I'm removing the Security keyword from this bug. While this issue does have a
security aspect to it, it is not a secuirty vulnerability itself. We reserve
the Security keyword to describe security vulnerabilities.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.