Arbitrary Command Injection Affecting killport package, versions <1.0.2



    Exploit Maturity Proof of concept
    Attack Complexity High
    Confidentiality High
    Integrity High
    Availability High
Expand this section
8.8 high

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  • Snyk ID SNYK-JS-KILLPORT-1078535
  • published 21 Mar 2021
  • disclosed 23 Feb 2021
  • credit OmniTaint

How to fix?

Upgrade killport to version 1.0.2 or higher.


killport is an a nodejs module to kill any processes base on its port

Affected versions of this package are vulnerable to Arbitrary Command Injection. If (attacker-controlled) user input is given, it is possible for an attacker to execute arbitrary commands. This is due to use of the child_process exec function without input sanitization.

Running this PoC will cause the command touch success to be executed, leading to the creation of a file called success.

PoC (provided by reporter):

var killport = require('killport');
killport("$(touch success); #");