Nessus Plugin #14666

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[GLSA-200409-09] MIT krb5: Multiple vulnerabilities

Family:

Gentoo Local Security Checks

Category:

infos

Copyright:

(C) 2004 Michel Arboi

Summary:

MIT krb5: Multiple vulnerabilities

Version:

$Revision: 1.1 $

Cve_id:

CAN-2004-0642, CAN-2004-0643, CAN-2004-0644, CAN-2004-0772

Bugtraq_id:

-

Xrefs:

GLSA:200409-09

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.

References:
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2004-002-dblfree.txt
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2004-003-asn1.txt
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0642
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0643
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0644
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0772


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