Ruby Code Injection in amazing_print

Executive Summary

This vulnerability is a Ruby code injection flaw in the amazing_print gem. It occurs in the AwesomeMethodArray#grep method where a specially named method containing Ruby interpolation syntax can be executed when grep is called with a block. This leads to arbitrary Ruby code execution within the host process.

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Detection Guidance

To detect this vulnerability, inspect Ruby applications using the amazing_print gem at commit dc890dfafdf07088ea901df53c19c2710e5c5234. Check for dynamic method names containing Ruby interpolation syntax passed to grep with a block. Review gem versions and method calls in codebases.

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Impact Analysis

An attacker could exploit this to execute malicious Ruby code on your system if they can influence dynamic method names in an application using the affected version of amazing_print. This could lead to unauthorized data access, system compromise, or other malicious activities depending on the application's context.

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Compliance Impact

This vulnerability allows arbitrary Ruby code execution in the host process, which could lead to unauthorized data access, modification, or exfiltration. For GDPR, this may violate principles of data protection and confidentiality. For HIPAA, it could compromise protected health information integrity and security.

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Mitigation Strategies

Immediately update the amazing_print gem to a patched version if available. Audit applications for unsafe dynamic method name usage. Restrict user input that could influence method names. Consider temporary removal of the gem if no patch exists.

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