CVE-2024-30054
📋 TL;DR
This vulnerability in Microsoft Power BI Client JavaScript SDK allows attackers to disclose sensitive information from affected systems. It affects organizations using Power BI embedded analytics or custom applications with the vulnerable SDK. The vulnerability requires user interaction to trigger.
💻 Affected Systems
- Microsoft Power BI Client JavaScript SDK
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could exfiltrate sensitive business data, user credentials, or authentication tokens from Power BI embedded applications, leading to data breaches and unauthorized access.
Likely Case
Information disclosure of session data or application state from Power BI embedded reports and dashboards, potentially exposing user-specific data.
If Mitigated
Limited impact with proper network segmentation, access controls, and monitoring in place to detect unusual data access patterns.
🎯 Exploit Status
Requires user interaction with malicious content to trigger the vulnerability. No public exploit code available at disclosure.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to latest Power BI JavaScript SDK version (July 2024 or later)
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-30054
Restart Required: No
Instructions:
1. Update Power BI JavaScript SDK to latest version. 2. Update any applications using the SDK. 3. Test embedded Power BI functionality. 4. Deploy updated applications to production.
🔧 Temporary Workarounds
Content Security Policy (CSP) Restrictions
allImplement strict CSP headers to limit script execution and data exfiltration
Content-Security-Policy: script-src 'self' https://*.powerbi.com; connect-src 'self'
Network Segmentation
allIsolate Power BI embedded applications from sensitive network segments
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to prevent data exfiltration
- Monitor network traffic for unusual data transfers from Power BI applications
🔍 How to Verify
Check if Vulnerable:
Check JavaScript SDK version in web applications embedding Power BI content. Look for SDK versions prior to July 2024.Check Version:
Inspect web application source code for Power BI SDK version references or check package.json for @microsoft/powerbi-client-js versionVerify Fix Applied:
Verify updated SDK version is deployed and test Power BI embedded functionality works correctly.📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript errors in browser console logs
- Unexpected data transfer patterns from Power BI applications
Network Indicators:
- Unusual outbound connections from Power BI embedded applications
- Data exfiltration patterns to unexpected domains
SIEM Query:
source="web_server" AND (PowerBI OR "powerbi-client-js") AND (error OR exception OR "unexpected")