Arbitrary Command Injection Affecting port-killer package, versions *



    Attack Complexity High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 0.41% (71st percentile)
Expand this section
8.8 high

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  • Snyk ID SNYK-JS-PORTKILLER-1078533
  • published 18 Mar 2021
  • disclosed 23 Feb 2021
  • credit OmniTaint

How to fix?

There is no fixed version for port-killer.


port-killer is a Kills the process running on a given port (assuming you have permission to do so)

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 port_killer = require('port-killer');

port_killer('$(touch success)');