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CVE-2023-54398— Yonyou U8 Cloud Java Deserialization RCE via FileManageServlet

Quick assessment

Affected
Yonyou U8 Cloud
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

用友 U8 Cloud 存在一个未经认证的 Java 反序列化漏洞，位于 组件中。该漏洞允许远程未经认证的通过向服务器发送经过序列化的 payload（负载数据），通过 POST 请求执行任意操作系统命令。攻击者可以利用 方法，该方法将原始 HTTP 请求体数据直接传递给 而未进行过滤，从而实现远程代码执行（RCE）。该漏洞的利用证据首次由 Shadowserver Foundation 于 2025-02-13 观察到。

CVSS 9.8 · Critical

Possible ATT&CK Techniques 1 AI

T1204 · User Execution
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I. Basic Information for CVE-2023-54398

Vulnerability Information
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Vulnerability Title
Yonyou U8 Cloud Java Deserialization RCE via FileManageServlet
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Yonyou U8 Cloud 1.0 -

II. Public POCs for CVE-2023-54398

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III. Intelligence Information for CVE-2023-54398

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Vendor Advisories for CVE-2023-54398 (3)

Security Blog Posts for CVE-2023-54398 (2)

Vendor Pages for CVE-2023-54398 (1)

IV. Related Vulnerabilities

Same product: U8 Cloud
Same vendor: Yonyou
Same weakness: CWE-502

V. Comments for CVE-2023-54398

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