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Date: Mon,  7 Jul 2014 14:14:06 -0400 (EDT)
From: (Larry W. Cashdollar)
To: <>
Subject: Vulnerability Report for Ruby Gem gnms-2.1.1

Title: Vulnerability Report for Ruby Gem gnms-2.1.1

Author: Larry W. Cashdollar, @_larry0

Date: 06/01/2014

OSVDB: 108594

CVE:Please Assign


Gem Author:

From: ./gnms-2.1.1/lib/cmd_parse.rb

The #{ip} variable isn't properly sanitized and can lead to remote command injection if a malicious user specifies an IP address with shell meta characters like ; and &. 

0Command injection via #{ip} in ping and other functions.
147-    lp=""
148-    nmap_version = $config.nmap_vers.to_f()
149-    if nmap_version >= 6.0 
150:      lp=`#{$config.nmap_path} -sU -sT #{ip} --host_timeout 60 2>/dev/null| grep open | grep "^[0-9]"`
151-    else
152-      if nmap_version > 0.0
153:        lp=`#{$config.nmap_path} -sU -sT #{ip} --host_timeout 60000 2>/dev/null| grep open | grep "^[0-9]"`
154-      end
155-    end
177-# Return mac adress of the ip if in local arp table
179-def mac_tablelocal(ip)
180:        `ping -c 1 -W 1 #{ip}`
181:	lp=`arp -n #{ip} | grep #{ip} | awk {print $3;}`
182-	#there is no entry
183-	if lp.chomp == "--"
184-	  lp=""
232-def ping (ip)
233:	pip=`#{$config.ping_path} #{ip} -c 1 -n -W 4 2>/dev/null | grep ^64`
234-	return pip!=""


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