gradio up to 4.12.x Temporary Directory /component_server move_resource_to_block_cache path traversal

Summaryinfo

A vulnerability described as problematic has been identified in gradio up to 4.12.x. This vulnerability affects the function move_resource_to_block_cache of the file /component_server of the component Temporary Directory Handler. Such manipulation leads to path traversal. This vulnerability is documented as CVE-2024-1561. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in gradio up to 4.12.x. It has been rated as problematic. Affected by this issue is the function move_resource_to_block_cache of the file /component_server of the component Temporary Directory Handler. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-29. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory. Impacted is confidentiality. CVE summarizes:

An issue was discovered in gradio-app/gradio, where the `/component_server` endpoint improperly allows the invocation of any method on a `Component` class with attacker-controlled arguments. Specifically, by exploiting the `move_resource_to_block_cache()` method of the `Block` class, an attacker can copy any file on the filesystem to a temporary directory and subsequently retrieve it. This vulnerability enables unauthorized local file read access, posing a significant risk especially when the application is exposed to the internet via `launch(share=True)`, thereby allowing remote attackers to read files on the host machine. Furthermore, gradio apps hosted on `huggingface.co` are also affected, potentially leading to the exposure of sensitive information such as API keys and credentials stored in environment variables.

The advisory is available at huntr.com. This vulnerability is handled as CVE-2024-1561 since 02/15/2024. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 4.13.0 eliminates this vulnerability. Applying the patch 24a583688046867ca8b8b02959c441818bdb34a2 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

• gradio

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12

License

• open-source

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CPE 2.2info

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