This script is Copyright (C) 2004-2016 Tenable Network Security, Inc.
The remote Red Hat host is missing one or more security updates.
Updated PAM packages are now available. These packages correct a bug
in pam_xauth's handling of authorization data for the root user.
[Updated 12 March 2003] Added packages for Red Hat Enterprise Linux ES
and Red Hat Enterprise Linux WS
The pam_xauth module is used to forward xauth information from user to
user in applications such as the su command.
Andreas Beck discovered that pam_xauth will forward authorization
information from the root account to unprivileged users. This could be
used by a local attacker to gain access to an administrator's X
session. To exploit this vulnerability the attacker would have to get
the administrator, as root, to use su to access the account belonging
to the attacker.
Users of pam_xauth are advised to upgrade to these errata packages
which contain a patch which adds ACL (access control list)
functionality to pam_xauth and disallows root forwarding by default.
Thanks to Andreas Beck for reporting this issue.
See also :
Update the affected pam and / or pam-devel packages.
Risk factor :
High / CVSS Base Score : 7.2