A vulnerability was found in onnx up to 1.12.x. It has been rated as critical. Affected by this issue is an unknown code block. The manipulation of the argument external_data with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The software 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 software 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. Impacted is confidentiality. CVE summarizes:

Versions of the package onnx before 1.13.0 are vulnerable to Directory Traversal as the external_data field of the tensor proto can have a path to the file which is outside the model current directory or user-provided directory, for example "../../../etc/passwd"

The weakness was disclosed 01/27/2023 as 3991. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2022-25882 since 02/24/2022. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 1.13.0 eliminates this vulnerability. Applying the patch f369b0e859024095d721f1d1612da5a8fa38988d 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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• onnx

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• open-source

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