Arbitrary Command Injection Affecting killport package, versions <1.0.2


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.22% (61st percentile)

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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.

Overview

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); #");

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

NVD

8.8 high