RHEL 4 : krb5 (RHSA-2008:0182)

High Nessus Plugin ID 63850

Synopsis

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

Description

Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4.5 Extended Update Support.

This update has been rated as having critical 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.

A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063)

This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding 'v4_mode=none' (without the quotes) to the '[kdcdefaults]' section of /var/kerberos/krb5kdc/kdc.conf.

Red Hat would like to thank MIT for reporting these issues.

All krb5 users are advised to update to these erratum packages which contain backported fixes to correct these issues.

Solution

Update the affected packages.

See Also

https://www.redhat.com/security/data/cve/CVE-2008-0062.html

https://www.redhat.com/security/data/cve/CVE-2008-0063.html

http://rhn.redhat.com/errata/RHSA-2008-0182.html

Plugin Details

Severity: High

ID: 63850

File Name: redhat-RHSA-2008-0182.nasl

Version: 1.11

Type: local

Agent: unix

Published: 2013/01/24

Updated: 2018/08/13

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:krb5-devel, p-cpe:/a:redhat:enterprise_linux:krb5-libs, p-cpe:/a:redhat:enterprise_linux:krb5-server, p-cpe:/a:redhat:enterprise_linux:krb5-workstation, cpe:/o:redhat:enterprise_linux:4.5

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 2008/03/18

Reference Information

CVE: CVE-2008-0062, CVE-2008-0063

RHSA: 2008:0182

CWE: 119, 189