Crafatar up to 2.1.4 Skin lib/public/ path traversal

Summaryinfo

A vulnerability categorized as critical has been discovered in Crafatar up to 2.1.4. This issue affects some unknown processing in the library lib/public/ of the component Skin Handler. Executing a manipulation can lead to path traversal. This vulnerability is tracked as CVE-2024-24756. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Crafatar up to 2.1.4 and classified as critical. This vulnerability affects an unknown functionality in the library lib/public/ of the component Skin Handler. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality. CVE summarizes:

Crafatar serves Minecraft avatars based on the skin for use in external applications. Files outside of the `lib/public/` directory can be requested from the server. Instances running behind Cloudflare (including crafatar.com) are not affected. Instances using the Docker container as shown in the README are affected, but only files within the container can be read. By default, all of the files within the container can also be found in this repository and are not confidential. This vulnerability is patched in 2.1.5.

The weakness was disclosed 02/02/2024 as GHSA-5cxq-25mp-q5f2. The advisory is shared for download at github.com. This vulnerability was named CVE-2024-24756 since 01/29/2024. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 2.1.5 eliminates this vulnerability. Applying the patch bba004acc725b362a5d2d5dfe30cf60e7365a373 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

• Crafatar

Version

• 2.1.0
• 2.1.1
• 2.1.2
• 2.1.3
• 2.1.4

License

• open-source

Website

• Product: https://github.com/crafatar/crafatar/

CPE 2.3info

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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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