CVE-2025-42924
📋 TL;DR
CVE-2025-42924 is an open redirect vulnerability in SAP S/4HANA's E-Recruiting BSP component that allows unauthenticated attackers to craft malicious links. When victims click these links, they are redirected to attacker-controlled pages. This affects organizations using vulnerable SAP S/4HANA E-Recruiting implementations.
💻 Affected Systems
- SAP S/4HANA
- SAP E-Recruiting
⚠️ 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
Attackers could redirect users to phishing sites that steal credentials or deliver malware, potentially leading to account compromise or system infection.
Likely Case
Users are redirected to phishing or scam websites, potentially resulting in credential theft or social engineering attacks.
If Mitigated
With proper user awareness training and web filtering, impact is limited to failed phishing attempts with minimal operational disruption.
🎯 Exploit Status
Open redirect vulnerabilities are commonly exploited in phishing campaigns and require minimal technical skill to weaponize.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply SAP Security Note 3642398
Vendor Advisory: https://me.sap.com/notes/3642398
Restart Required: Yes
Instructions:
1. Download SAP Note 3642398 from SAP Support Portal
2. Apply the correction instructions in the note
3. Restart affected SAP systems
4. Verify the fix by testing redirect functionality
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to reject URLs with external domains in redirect parameters
Implement ABAP code to validate redirect URLs against allowed domains
Web Application Firewall Rule
allBlock requests containing suspicious redirect parameters in URLs
WAF rule: deny requests with 'redirect' or 'url' parameters containing external domains
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to restrict redirect destinations
- Deploy network/web filtering to block known malicious domains and suspicious redirect patterns
🔍 How to Verify
Check if Vulnerable:
Test by attempting to redirect to external domains using crafted URLs with redirect parameters in E-Recruiting BSP applicationsCheck Version:
Transaction ST03N or SM51 to check SAP kernel and component versionsVerify Fix Applied:
After applying SAP Note 3642398, test that redirects to external domains are blocked or sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual redirect patterns in web server logs
- Multiple failed redirect attempts
- Requests with suspicious URL parameters
Network Indicators:
- Outbound connections to suspicious domains following SAP application access
- Unusual redirect chains in HTTP traffic
SIEM Query:
web_server_logs WHERE url CONTAINS 'redirect' AND url CONTAINS 'http://' AND NOT url CONTAINS 'yourdomain.com'