ICMP Netmask Request Information Disclosure

Info Nessus Plugin ID 10113


The remote host is affected by an information disclosure vulnerability.


The remote host answers to an ICMP_MASKREQ query and responds with its netmask. An attacker can use this information to understand how your network is set up and how routing is done. This may help him to bypass your filters.


Reconfigure the remote host so that it does not answer to those requests. Set up filters that deny ICMP packets of type 17.

Plugin Details

Severity: Info

ID: 10113

File Name: icmp_mask_req.nasl

Version: $Revision: 1.36 $

Type: remote

Family: General

Published: 1999/07/29

Modified: 2011/11/15

Risk Information

Risk Factor: Info

Vulnerability Information

Vulnerability Publication Date: 1995/01/01

Reference Information

CVE: CVE-1999-0524


CWE: 200