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. How reproducible: Just try "1q2w3e4r" as password, it pass without any warning. Steps to Reproduce: 1. Just type simple password when you change the password Actual results: cracklib let simple password pass successfully Expected results: cracklib should warn about patterned-password Additional info:
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 release.
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. http://rhn.redhat.com/errata/RHEA-2007-0259.html