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Date: Wed, 27 May 2009 11:55:13 +0200
From: Jan Lieskovsky <>
To: "Steven M. Christey" <>
Subject: CVE assignment notification (pam_krb5 CVE-2009-1384)

Hello Steve,

  a security flaw similar to recent pam_ssh's CVE-2009-1273

was found in the pam_krb5 module. From particular Red Hat
bugzilla entry:

A security flaw was found in PAM pam_krb5 module, providing user
authentication based on Kerberos principals. A remote attacker could
use this flaw to recognize, if some username/login belongs to set of
user accounts, existing on the system, and subsequently perform
dictionary based password guess attack.  

VERSIONS INFORMATION (Red Hat pam_krb5 version numbering is used):

a, Not vulnerable - the vulnerability is not present in versions of
                    pam_krb5 prior and including pam_krb5-2.1.17
b, Vulnerable     - presence of the flaw is confirmed in versions of
                    pam_krb5 starting from pam_krb5-2.2.14 and newer

CVE:  CVE identifier of CVE-2009-1384 has been already assigned to 
====  this flaw.

Thanks && regards, Jan.
Jan iankko Lieskovsky / Red Hat Security Response Team

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