#VU75176 Path traversal in onnx - CVE-2022-25882

Vulnerability identifier: #VU75176

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-25882

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
onnx
Universal components / Libraries / Libraries used by multiple products

Vendor: Open Neural Network Exchange

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Request example:

http://localhost:8080/public/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/root/.ssh/id_rsa

Mitigation
Install update from vendor's website.

Vulnerable software versions

onnx: 0.1 - 1.12.0

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External links
https://gist.github.com/jnovikov/02a9aff9bf2188033e77bd91ff062856
https://github.com/onnx/onnx/issues/3991
https://security.snyk.io/vuln/SNYK-PYTHON-ONNX-2395479
https://github.com/onnx/onnx/blob/96516aecd4c110b0ac57eba08ac236ebf7205728/onnx/checker.cc%23L129
https://github.com/onnx/onnx/commit/f369b0e859024095d721f1d1612da5a8fa38988d
https://github.com/onnx/onnx/pull/4400

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.