Nessus Plugin #15110

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[DSA273] DSA-273-1 krb4

Family:

Debian Local Security Checks

Category:

infos

Copyright:

This script is (C) 2004 Michel Arboi

Summary:

DSA-273-1 krb4

Version:

$Revision: 1.4 $

Cve_id:

CAN-2003-0138, CAN-2003-0139

Bugtraq_id:

-

Xrefs:

DSA:273, CERT:442569, CERT:623217

Description:

A cryptographic weakness in version 4 of the Kerberos protocol allows
an attacker to use a chosen-plaintext attack to impersonate any
principal in a realm. Additional cryptographic weaknesses in the krb4
implementation permit the use of cut-and-paste attacks to fabricate
krb4 tickets for unauthorized client principals if triple-DES keys are
used to key krb4 services. These attacks can subvert a site's entire
Kerberos authentication infrastructure.
For the stable distribution (woody) this problem has been
fixed in version 1.1-8-2.3.
For the old stable distribution (woody) this problem has been
fixed in version 1.0-2.3.
For the unstable distribution (sid) this problem has been
fixed in version 1.2.2-1.
We recommend that you upgrade your krb4 packages immediately.


Solution : http://www.debian.org/security/2003/dsa-273
Risk factor : High