This script is Copyright (C) 2010-2014 Tenable Network Security, Inc.
The remote Red Hat host is missing one or more security updates.
Updated krb5 packages that fix multiple security issues are now
available for Red Hat Enterprise Linux 4 and 5.
The Red Hat Security Response Team has rated this update as having
moderate security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from
the CVE link in the References section.
Kerberos is a network authentication system which allows clients and
servers to authenticate to each other using symmetric encryption and a
trusted third party, the Key Distribution Center (KDC).
Multiple checksum validation flaws were discovered in the MIT Kerberos
implementation. A remote attacker could use these flaws to tamper with
certain Kerberos protocol packets and, possibly, bypass authentication
mechanisms in certain configurations using Single-use Authentication
Red Hat would like to thank the MIT Kerberos Team for reporting these
All krb5 users should upgrade to these updated packages, which contain
a backported patch to correct these issues. After installing the
updated packages, the krb5kdc daemon will be restarted automatically.
See also :
Update the affected packages.
Risk factor :
Medium / CVSS Base Score : 4.3
CVSS Temporal Score : 3.4
Public Exploit Available : true