gradio up to 4.31.3 JSON json_component.py postprocess path traversal

Summaryinfo

A vulnerability described as problematic has been identified in gradio up to 4.31.3. Affected by this vulnerability is the function postprocess of the file gradio/components/json_component.py of the component JSON Component. The manipulation results in input validation. This vulnerability is known as CVE-2024-4941. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in gradio up to 4.31.3. Affected is the function postprocess of the file gradio/components/json_component.py of the component JSON Component. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality. CVE summarizes:

A local file inclusion vulnerability exists in the JSON component of gradio-app/gradio version 4.25. The vulnerability arises from improper input validation in the `postprocess()` function within `gradio/components/json_component.py`, where a user-controlled string is parsed as JSON. If the parsed JSON object contains a `path` key, the specified file is moved to a temporary directory, making it possible to retrieve it later via the `/file=..` endpoint. This issue is due to the `processing_utils.move_files_to_cache()` function traversing any object passed to it, looking for a dictionary with a `path` key, and then copying the specified file to a temporary directory. The vulnerability can be exploited by an attacker to read files on the remote system, posing a significant security risk.

The advisory is shared for download at huntr.com. This vulnerability is traded as CVE-2024-4941 since 05/15/2024. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 4.31.4 eliminates this vulnerability. Applying the patch ee1e2942e0a1ae84a08a05464e41c8108a03fa9c 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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• gradio

Version

• 4.31.0
• 4.31.1
• 4.31.2
• 4.31.3

License

• open-source

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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