Executive Summary

This vulnerability is a path traversal issue in GuardDog's safe_extract() function prior to version 2.7.1. It allows malicious PyPI packages to write arbitrary files outside the intended extraction directory, which can lead to Arbitrary File Overwrite and Remote Code Execution on systems running GuardDog.

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Impact Analysis

The vulnerability can allow attackers to overwrite arbitrary files on your system and potentially execute remote code, which could compromise the security and integrity of your system running GuardDog.

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Mitigation Strategies

Upgrade GuardDog to version 2.7.1 or later, as this version contains the fix for the path traversal vulnerability in the safe_extract() function. Avoid using vulnerable versions prior to 2.7.1 to prevent arbitrary file overwrite and remote code execution.

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Detection Guidance

To detect this vulnerability on your system, check the version of GuardDog installed and verify if it is below 2.7.1, as versions 2.7.0 and below are vulnerable. You can run the command `guarddog --version` or check the package version via your package manager. Additionally, monitor for unexpected or unauthorized file writes outside the intended extraction directories, especially files like ~/.bashrc, ~/.profile, ~/.ssh/authorized_keys, or system files such as /etc/cron.d/malicious. You can use commands like `find / -type f -name '.bashrc' -newermt '2026-01-01'` to find recently modified shell initialization files or `grep -r 'malicious' /etc/cron.d/` to detect suspicious cron jobs. Network detection is difficult without specific signatures, but monitoring for downloads of suspicious PyPI packages or unexpected GuardDog activity may help. [2]

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