RHEL 2.1 : krb5 (RHSA-2004:448)

This script is Copyright (C) 2004-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

Updated Kerberos (krb5) packages that correct double-free and ASN.1
parsing bugs are now available for Red Hat Enterprise Linux.

Kerberos is a networked authentication system that uses a trusted
third party (a KDC) to authenticate clients and servers to each other.

Several double-free bugs were found in the Kerberos 5 KDC and
libraries. A remote attacker could potentially exploit these flaws to
execute arbitrary code. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the names CVE-2004-0642 and
CVE-2004-0643 to these issues.

A double-free bug was also found in the krb524 server (CVE-2004-0772),
however this issue was fixed for Red Hat Enterprise Linux 2.1 users by
a previous erratum, RHSA-2003:052.

An infinite loop bug was found in the Kerberos 5 ASN.1 decoder
library. A remote attacker may be able to trigger this flaw and cause
a denial of service. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CVE-2004-0644 to this issue.

All users of krb5 should upgrade to these updated packages, which
contain backported security patches to resolve these issues.

See also :

https://www.redhat.com/security/data/cve/CVE-2004-0642.html
https://www.redhat.com/security/data/cve/CVE-2004-0643.html
https://www.redhat.com/security/data/cve/CVE-2004-0644.html
http://web.mit.edu/kerberos/advisories/
http://rhn.redhat.com/errata/RHSA-2004-448.html

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)

Family: Red Hat Local Security Checks

Nessus Plugin ID: 14596 ()

Bugtraq ID:

CVE ID: CVE-2004-0642
CVE-2004-0643
CVE-2004-0644