RHEL 6 : krb5 (RHSA-2011:0447)

This script is Copyright (C) 2011-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

Updated krb5 packages that fix one security issue are now available
for Red Hat Enterprise Linux 6.

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).

An invalid free flaw was found in the password-changing capability of
the MIT Kerberos administration daemon, kadmind. A remote,
unauthenticated attacker could use this flaw to cause kadmind to abort
via a specially-crafted request. (CVE-2011-0285)

All krb5 users should upgrade to these updated packages, which contain
a backported patch to correct this issue. After installing the updated
packages, the kadmind daemon will be restarted automatically.

See also :

https://www.redhat.com/security/data/cve/CVE-2011-0285.html
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-004.txt
http://rhn.redhat.com/errata/RHSA-2011-0447.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)
CVSS Temporal Score : 7.8
(CVSS2#E:POC/RL:OF/RC:C)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 53445 ()

Bugtraq ID: 47310

CVE ID: CVE-2011-0285