CVE Catalog

CVE-2023-54398

CriticalCVSS 9.8
Published: Translated: NVD NIST

Summary

Yonyou U8 Cloud contains an unauthenticated Java deserialization vulnerability in the nc.impl.pub.filesystem.FileManageServlet component that allows remote unauthenticated attackers to execute arbitrary OS commands by sending a serialized payload via POST request. Attackers can exploit the doAction method, which passes raw HTTP request body data directly to ObjectInputStream.readObject() without filtering, to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-02-13.

Risk Assessment

This vulnerability allows unauthenticated attackers to achieve remote code execution on the server, potentially leading to full system compromise and backdoor installation.

Recommendation

Apply patches for Yonyou U8 Cloud that filter deserialization input in the FileManageServlet component, and restrict access to it from untrusted networks.

Related vulnerabilities

Original NVD description (English source)

Yonyou U8 Cloud contains an unauthenticated Java deserialization vulnerability in the nc.impl.pub.filesystem.FileManageServlet component that allows remote unauthenticated attackers to execute arbitrary OS commands by sending a serialized payload via POST request. Attackers can exploit the doAction method, which passes raw HTTP request body data directly to ObjectInputStream.readObject() without filtering, to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-02-13.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS