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Security Fix for RCE on "wireless-tools" - huntr.dev #57

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27 changes: 18 additions & 9 deletions ifconfig.js
Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ var child_process = require('child_process');
*
*/
var ifconfig = module.exports = {
exec: child_process.exec,
exec: child_process.execFile,
status: status,
down: down,
up: up
Expand Down Expand Up @@ -188,11 +188,16 @@ function parse_status_interface(callback) {
*
*/
function status(interface, callback) {
var cmd = "";
if (callback) {
this.exec('ifconfig ' + interface, parse_status_interface(callback));
cmd = 'ifconfig ' + interface;
cmd = cmd.split(' ');
this.exec(cmd[0], cmd.slice(1), parse_status_interface(callback));
}
else {
this.exec('ifconfig -a', parse_status(interface));
cmd = 'ifconfig -a';
cmd = cmd.split(' ');
this.exec(cmd[0], cmd.slice(1), parse_status(interface));
}
}

Expand All @@ -214,7 +219,9 @@ function status(interface, callback) {
*
*/
function down(interface, callback) {
return this.exec('ifconfig ' + interface + ' down', callback);
var cmd = 'ifconfig ' + interface + ' down';
cmd = cmd.split(' ');
return this.exec(cmd[0], cmd.slice(1), callback);
}

/**
Expand All @@ -241,9 +248,11 @@ function down(interface, callback) {
*
*/
function up(options, callback) {
return this.exec('ifconfig ' + options.interface +
' ' + options.ipv4_address +
' netmask ' + options.ipv4_subnet_mask +
' broadcast ' + options.ipv4_broadcast +
' up', callback);
var cmd = 'ifconfig ' + options.interface +
' ' + options.ipv4_address +
' netmask ' + options.ipv4_subnet_mask +
' broadcast ' + options.ipv4_broadcast +
' up', callback;
cmd = cmd.split(' ');
return this.exec(cmd[0], cmd.slice(1));
}