#VU83925 Path traversal in MLflow - CVE-2023-3765

Vulnerability identifier: #VU83925

Vulnerability risk: High

CVSSv4.0: 8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-3765

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MLflow
Web applications / Other software

Vendor: MLflow

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to input validation error when processing directory traversal sequences within the validate_path_is_safe() function in /mlflow/server/handlers.py on Windows. A remote attacker can send a specially crafted HTTP request and overwrite arbitrary files on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MLflow: 2.2.0 - 2.4.2

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External links
https://github.com/mlflow/mlflow/commit/6dde93758d42455cb90ef324407919ed67668b9b
https://huntr.dev/bounties/4be5fd63-8a0a-490d-9ee1-f33dc768ed76

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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.