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pdf_info version 0.5.3 is vulnerable to command execution due to the use of Ruby backticks for executing system commands instead of the safer Open3 module. This allows attackers to inject arbitrary commands if user input is passed to the vulnerable code path.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository demonstrates a proof-of-concept (POC) exploit for CVE-2022-36231, a command injection vulnerability in the Ruby gem pdf_info (<= 0.5.3). The vulnerability arises from unsanitized user input being passed to a shell command when instantiating a PDF::Info object with a crafted file path. The repository contains two files: a README.md with detailed vulnerability analysis and exploitation steps, and poc.rb, a Ruby script that demonstrates both benign and malicious usage. The malicious example injects a reverse shell payload via the PDF file path, connecting back to 127.0.0.1:4444. The exploit requires the target to use the vulnerable gem and process attacker-controlled file paths. The payload is a bash reverse shell, and the attack vector is local (user-supplied file path). The repository is a clear, functional POC and does not use any exploit framework.
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