Compliance Impact

The vulnerability allows unauthenticated users to execute arbitrary code by exploiting unsafe deserialization in picklescan, which can lead to unauthorized access or manipulation of data.

Such unauthorized code execution and potential data compromise can negatively impact compliance with data protection standards and regulations like GDPR and HIPAA, which require safeguarding sensitive data and ensuring system integrity.

Specifically, the risk of executing malicious code from untrusted sources may lead to breaches of confidentiality, integrity, and availability of data, which are core principles in these regulations.

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Executive Summary

This vulnerability exists in picklescan versions before 1.0.1 and involves unsafe deserialization of pickle files.

Attackers can embed malicious code inside pickle files by hiding eval calls nested under callable objects using getattr, which bypasses detection mechanisms.

When picklescan loads these malicious pickle files from untrusted sources, the hidden code executes, allowing unauthenticated users to run arbitrary code.

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Impact Analysis

This vulnerability allows unauthenticated attackers to execute arbitrary code on systems using vulnerable versions of picklescan.

Because the malicious code is hidden and evades detection, it poses a significant supply chain risk for any system relying on picklescan to scan untrusted pickle files.

Successful exploitation can lead to full system compromise, data loss, or unauthorized control over affected systems.

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Detection Guidance

This vulnerability involves unsafe deserialization of pickle files with obfuscated eval calls hidden under callable objects via getattr, which evades detection by typical scanning methods.

There are no specific detection commands or network/system scanning instructions provided in the available resources.

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Mitigation Strategies

The primary mitigation step is to upgrade picklescan to version 1.0.1 or later, where this vulnerability has been patched.

Avoid loading pickle files from untrusted sources to prevent execution of malicious code embedded in pickle files.

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