GuardDog up to 0.1.7 Scan shutil.unpack_archive path traversal

Summaryinfo

A vulnerability was found in GuardDog up to 0.1.7. It has been declared as critical. This affects the function shutil.unpack_archive of the component Scan Handler. Such manipulation leads to path traversal. This vulnerability is uniquely identified as CVE-2022-23530. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in GuardDog up to 0.1.7. It has been rated as critical. Affected by this issue is the function shutil.unpack_archive of the component Scan Handler. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

GuardDog is a CLI tool to identify malicious PyPI packages. Versions prior to v0.1.8 are vulnerable to arbitrary file write when scanning a specially-crafted remote PyPI package. Extracting files using shutil.unpack_archive() from a potentially malicious tarball without validating that the destination file path is within the intended destination directory can cause files outside the destination directory to be overwritten. This issue is patched in version 0.1.8. Potential workarounds include using a safer module, like zipfile, and validating the location of the extracted files and discarding those with malicious paths.

The weakness was disclosed 12/17/2022 as GHSA-78m5-jpmf-ch7v. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2022-23530 since 01/19/2022. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 0.1.8 eliminates this vulnerability. Applying the patch 37c7d0767ba28f4df46117d478f97652594c491c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• GuardDog

Version

• 0.1.0
• 0.1.1
• 0.1.2
• 0.1.3
• 0.1.4
• 0.1.5
• 0.1.6
• 0.1.7

License

• open-source

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CPE 2.2info

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