RHEL 4 : krb5 (RHSA-2009:0409)

This script is Copyright (C) 2009-2014 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated krb5 packages that fix a security issue are now available for
Red Hat Enterprise Linux 4.

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 using symmetric encryption and a
trusted third party, the Key Distribution Center (KDC).

An input validation flaw was found in the ASN.1 (Abstract Syntax
Notation One) decoder used by MIT Kerberos. A remote attacker could
use this flaw to crash a network service using the MIT Kerberos
library, such as kadmind or krb5kdc, by causing it to dereference or
free an uninitialized pointer. (CVE-2009-0846)

All krb5 users should upgrade to these updated packages, which contain
a backported patch to correct this issue. All running services using
the MIT Kerberos libraries must be restarted for the update to take
effect.

See also :

https://www.redhat.com/security/data/cve/CVE-2009-0846.html
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-002.txt
http://rhn.redhat.com/errata/RHSA-2009-0409.html

Solution :

Update the affected packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)

Family: Red Hat Local Security Checks

Nessus Plugin ID: 36113 ()

Bugtraq ID:

CVE ID: CVE-2009-0844
CVE-2009-0845
CVE-2009-0846
CVE-2009-0847