Ultimaker Cura up to 5.7.2 3MF Format Reader ThreeMFReader.py drop_to_buildplate code injection

Summaryinfo

A vulnerability has been found in Ultimaker Cura up to 5.7.2 and classified as critical. This affects an unknown part of the file /plugins/ThreeMFReader.py of the component 3MF Format Reader. The manipulation of the argument drop_to_buildplate leads to code injection. This vulnerability is uniquely identified as CVE-2024-8374. The attack is possible to be carried out remotely. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Ultimaker Cura up to 5.7.2 and classified as critical. This issue affects an unknown part of the file /plugins/ThreeMFReader.py of the component 3MF Format Reader. The manipulation of the argument drop_to_buildplate with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

UltiMaker Cura slicer versions 5.7.0-beta.1 through 5.7.2 are vulnerable to code injection via the 3MF format reader (/plugins/ThreeMFReader.py). The vulnerability arises from improper handling of the drop_to_buildplate property within 3MF files, which are ZIP archives containing the model data. When a 3MF file is loaded in Cura, the value of the drop_to_buildplate property is passed to the Python eval() function without proper sanitization, allowing an attacker to execute arbitrary code by crafting a malicious 3MF file. This vulnerability poses a significant risk as 3MF files are commonly shared via 3D model databases.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2024-8374 since 09/02/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

Applying the patch 285a241eb28da3188c977f85d68937c0dad79c50 is able to eliminate this problem. The bugfix is ready for download at github.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Ultimaker

Name

• Cura

Version

• 5.7.0
• 5.7.1
• 5.7.2

License

• open-source

Website

• Product: https://github.com/Ultimaker/Cura/

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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