McWebserver up to 0.1.2.1 on Fabric HTTP Request path traversal

Summaryinfo

A vulnerability labeled as critical has been found in McWebserver up to 0.1.2.1 on Fabric. This vulnerability affects unknown code of the component HTTP Request Handler. Executing a manipulation can lead to path traversal. This vulnerability is tracked as CVE-2022-39221. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in McWebserver up to 0.1.2.1 on Fabric (Web Server). It has been declared as critical. This vulnerability affects an unknown part of the component HTTP Request 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:

McWebserver mod runs a simple HTTP server alongside the Minecraft server in seperate threads. Path traversal in McWebserver Minecraft Mod for Fabric and Quilt up to and including 0.1.2.1 and McWebserver Minecraft Mod for Forge up to and including 0.1.1 allows all files, accessible by the program, to be read by anyone via HTTP request. Version 0.2.0 with patches are released to both platforms (Fabric and Quilt, Forge). As a workaround, the McWebserver mod can be disabled by removing the file from the `mods` directory.

The weakness was disclosed 09/21/2022 as GHSA-gcvq-42cx-r46q. The advisory is shared for download at github.com. This vulnerability was named CVE-2022-39221 since 09/02/2022. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 0.2.0 eliminates this vulnerability. Applying a patch 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

Type

• Web Server

Name

• McWebserver

Version

• 0.1.2.0
• 0.1.2.1

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

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• 🔍
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