This script is Copyright (C) 2013-2016 Tenable Network Security, Inc.
The remote Oracle Linux host is missing one or more security updates.
From Red Hat Security Advisory 2007:0858 :
Updated krb5 packages that fix two security flaws are now available
for Red Hat Enterprise Linux 5.
This update has been rated as having important security impact by the
Red Hat Security Response Team.
Kerberos is a network authentication system which allows clients and
servers to authenticate to each other through use of symmetric
encryption and a trusted third party, the KDC. kadmind is the KADM5
Tenable Network Security discovered a stack-based buffer overflow flaw
in the RPC library used by kadmind. A remote unauthenticated attacker
who can access kadmind could trigger this flaw and cause kadmind to
crash. On Red Hat Enterprise Linux 5 it is not possible to exploit
this flaw to run arbitrary code as the overflow is blocked by
Garrett Wollman discovered an uninitialized pointer flaw in kadmind. A
remote unauthenticated attacker who can access kadmind could trigger
this flaw and cause kadmind to crash. (CVE-2007-4000)
These issues did not affect the versions of Kerberos distributed with
Red Hat Enterprise Linux 2.1, 3, or 4.
Users of krb5-server are advised to update to these erratum packages
which contain backported fixes to correct these issues.
See also :
Update the affected krb5 packages.
Risk factor :
Critical / CVSS Base Score : 10.0
CVSS Temporal Score : 8.3
Public Exploit Available : true