CVE-2025-42948
📋 TL;DR
This is a Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver ABAP Platform that allows unauthenticated attackers to create malicious links. When authenticated users click these links, attackers can execute arbitrary JavaScript in the victim's browser session, potentially accessing or modifying data within that session's scope. This affects SAP NetWeaver ABAP Platform installations with the vulnerable component.
💻 Affected Systems
- SAP NetWeaver ABAP Platform
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains full control of authenticated user's browser session, allowing data theft, privilege escalation, or unauthorized transactions within the SAP system.
Likely Case
Attacker steals session cookies or authentication tokens, leading to unauthorized access to the SAP system with the victim's privileges.
If Mitigated
Limited to session hijacking of individual users who click malicious links, with no direct server compromise.
🎯 Exploit Status
Exploitation requires: 1) Unauthenticated attacker creates malicious link, 2) Link reaches authenticated user, 3) User clicks link while authenticated. No public exploit code known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply SAP Security Note 3629871
Vendor Advisory: https://me.sap.com/notes/3629871
Restart Required: No
Instructions:
1. Download SAP Note 3629871 from SAP Support Portal. 2. Apply the correction instructions in the note. 3. Test the fix in development environment first. 4. Deploy to production following change management procedures.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement proper input validation and output encoding for user-controlled data in affected components
Content Security Policy (CSP)
allImplement strict CSP headers to prevent execution of unauthorized scripts
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) with XSS protection rules
- Educate users about phishing risks and safe browsing practices
🔍 How to Verify
Check if Vulnerable:
Check if SAP Note 3629871 is applied in your system using transaction SNOTE or by checking applied notes listCheck Version:
Use SAP transaction SM51 to check system details or check applied notes in SNOTEVerify Fix Applied:
Test the vulnerable component with safe XSS payloads to confirm they are properly sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual URL parameters with script tags or JavaScript in SAP web dispatcher logs
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests containing suspicious script tags or JavaScript payloads to SAP endpoints
SIEM Query:
source="sap_web_dispatcher" AND (http_uri="*<script*" OR http_uri="*javascript:*")