FreeBSD nfsd Malformed NFS Mount Request Remote DoS

This script is Copyright (C) 2006-2014 Tenable Network Security, Inc.


Synopsis :

The remote host is affected by a denial of service vulnerability.

Description :

The NFS server on the remote host appears to be one from FreeBSD that
causes a kernel panic when it receives a malformed NFS mount request
via TCP. An unauthenticated remote attacker can leverage this flaw to
crash the remote host.

See also :

http://www.nessus.org/u?31514c89
http://www.nessus.org/u?2335c1e7

Solution :

Use a firewall to restrict access to the NFS server or upgrade / patch
the affected system as described in the vendor advisory above.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 6.4
(CVSS2#E:F/RL:OF/RC:C)
Public Exploit Available : true

Family: Denial of Service

Nessus Plugin ID: 20989 (freebsd_nfsd_dos.nasl)

Bugtraq ID: 16838

CVE ID: CVE-2006-0900