FreeBSD : krb5 -- requires_preauth bypass in PKINIT-enabled KDC (406636fe-055d-11e5-aab1-d050996490d0)

This script is Copyright (C) 2015-2016 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing one or more security-related
updates.

Description :

MIT reports :

In MIT krb5 1.12 and later, when the KDC is configured with PKINIT
support, an unauthenticated remote attacker can bypass the
requires_preauth flag on a client principal and obtain a ciphertext
encrypted in the principal's long-term key. This ciphertext could be
used to conduct an off-line dictionary attack against the user's
password.

See also :

http://krbdev.mit.edu/rt/Ticket/Display.html?id=8160
http://www.nessus.org/u?85ff9051

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 5.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 83901 ()

Bugtraq ID:

CVE ID: CVE-2015-2694

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