External Entity Attack in PDF Disguised Document

Executive Summary

This vulnerability occurs because the input file does not need to be strictly in a valid PDF format. Instead, after reviewing the content, the original document disguised as a PDF is sent to the parser. Malicious documents can construct harmful external entities that, through the protocol, point to local file paths. This allows an attacker to access any local files that the user has permission to access.

Useful 0 Not Useful 0

Impact Analysis

The vulnerability can lead to unauthorized access to local files on the user's system. An attacker could exploit this to read sensitive information stored in files that the user has permission to access, potentially leading to data leakage or exposure of confidential information.

Useful 0 Not Useful 0