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Arbitrary Command Injection Affecting dns-sync package, versions <0.1.3

0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 0.25% (65th percentile)
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NVD
9.8 critical

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  • Snyk ID npm:dns-sync:20141111
  • published 11 Nov 2014
  • disclosed 11 Nov 2014
  • credit Steve Kemp
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Introduced: 11 Nov 2014

CVE-2014-9682 Open this link in a new tab
CWE-77 Open this link in a new tab

How to fix?

Upgrade dns-sync to version 0.1.1 or greater.

Overview

The dns-sync library for node.js allows resolving hostnames in a synchronous fashion. All versions of dns-sync prior to the release 0.1.3 were vulnerable to arbitrary command execution via maliciously formed hostnames.

Details

For example:

var dnsSync = require('dns-sync');
console.log(dnsSync.resolve('$(id > /tmp/foo)'));

This is caused by the hostname being passed through a shell as part of a command execution.