This script is Copyright (C) 2012 Tenable Network Security, Inc.
The remote Scientific Linux host is missing a security update.
A flaw was found in pam_krb5. In some non-default configurations
(specifically, those where pam_krb5 would be the first module to
prompt for a password), the text of the password prompt varied based
on whether or not the username provided was a username known to the
system. A remote attacker could use this flaw to recognize valid
usernames, which would aid a dictionary-based password guess attack.
This update also fixes the following bugs :
- certain applications which do not properly implement PAM
conversations may fail to authenticate users whose
passwords have expired and must be changed, or may
succeed without forcing the user's password to be
changed. This bug is triggered by a previously-applied
fix to pam_krb5 which makes it comply more closely to
PAM specifications. If an application misbehaves,
enabling the 'chpw_prompt' option for its service should
restore the old behavior. (BZ#509092)
- pam_krb5 does not allow the user to change an expired
password in cases where the Key Distribution Center
(KDC) is configured to refuse attempts to obtain
forwardable password-changing credentials. This update
fixes this issue. (BZ#489015)
- failure to verify TGT because of wrong keytab handling.
See also :
Update the affected pam_krb5 package.
Risk factor :
Medium / CVSS Base Score : 5.0
Family: Scientific Linux Local Security Checks
Nessus Plugin ID: 60772 ()
CVE ID: CVE-2009-1384
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