Description
用友U8 cloud系统lfw.chart接口存在实体注入漏洞，攻击者添加恶意内容，通过易受攻击的代码，就能够攻击包含缺陷的XML处理器。
用友U8 Cloud lfw.chart 接口 XXE漏洞
PoC
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https://www.scribd.com/document/870380103/2025-Attack-Defense-Vulnerability-List
https://github.com/zan8in/wy876-POC/blob/main/%E7%94%A8%E5%8F%8BOA/%E7%94%A8%E5%8F%8BU8-Cloud%E7%B3%BB%E7%BB%9FXChangeServlet%E6%8E%A5%E5%8F%A3%E5%AD%98%E5%9C%A8XXE%E6%BC%8F%E6%B4%9E.md
https://cn-sec.com/archives/2523557.html
https://www.cnblogs.com/lovesaber157/p/18186678
https://blog.csdn.net/qq_36618918/article/details/135402449