FreeBSD nfsd Malformed NFS Mount Request Remote DoS

High Nessus Plugin ID 20989


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


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.


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

See Also

Plugin Details

Severity: High

ID: 20989

File Name: freebsd_nfsd_dos.nasl

Version: 1.19

Type: remote

Published: 2006/03/01

Updated: 2018/07/11

Dependencies: 11111, 11936

Configuration: Enable paranoid mode

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd

Required KB Items: Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 2006/02/26

Reference Information

CVE: CVE-2006-0900

BID: 16838