GLSA-200409-09 : MIT krb5: Multiple vulnerabilities

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


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-200409-09
(MIT krb5: Multiple vulnerabilities)

The implementation of the Key Distribution Center (KDC) and the MIT krb5
library contain double-free vulnerabilities, making client programs as well
as application servers vulnerable.
The ASN.1 decoder library is vulnerable to a denial of service attack,
including the KDC.

Impact :

The double-free vulnerabilities could allow an attacker to execute
arbitrary code on a KDC host and hosts running krb524d or vulnerable
services. In the case of a KDC host, this can lead to a compromise of the
entire Kerberos realm. Furthermore, an attacker impersonating a legitimate
KDC or application server can potentially execute arbitrary code on
authenticating clients.
An attacker can cause a denial of service for a KDC or application server
and clients, the latter if impersonating a legitimate KDC or application
server.

Workaround :

There is no known workaround at this time.

See also :

http://www.nessus.org/u?34bb0fc8
http://www.nessus.org/u?4d0e4d09
http://www.gentoo.org/security/en/glsa/glsa-200409-09.xml

Solution :

All mit-krb5 users should upgrade to the latest stable version:
# emerge sync
# emerge -pv '>=app-crypt/mit-krb5-1.3.4'
# emerge '>=app-crypt/mit-krb5-1.3.4'

Risk factor :

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

Family: Gentoo Local Security Checks

Nessus Plugin ID: 14666 (gentoo_GLSA-200409-09.nasl)

Bugtraq ID:

CVE ID: CVE-2004-0642
CVE-2004-0643
CVE-2004-0644
CVE-2004-0772