CVE-2025-42895
📋 TL;DR
This vulnerability in SAP HANA JDBC Client allows high-privilege locally authenticated users to supply crafted connection parameters that lead to unauthorized code loading. This primarily affects availability of the application with low impact on confidentiality and integrity. Only users with local authentication and high privileges can exploit this vulnerability.
💻 Affected Systems
- SAP HANA JDBC Client
⚠️ 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
Complete denial of service for SAP HANA applications through unauthorized code execution, potentially crashing the JDBC client or associated services.
Likely Case
Local high-privilege user causes application instability or temporary unavailability by exploiting the insufficient parameter validation.
If Mitigated
Minimal impact with proper access controls limiting local high-privilege users and network segmentation.
🎯 Exploit Status
Exploitation requires local access and high privileges, limiting widespread abuse potential.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check SAP Note 3643385 for specific patched versions
Vendor Advisory: https://me.sap.com/notes/3643385
Restart Required: Yes
Instructions:
1. Review SAP Note 3643385 for affected versions and patches
2. Apply the security patch from SAP Security Patch Day
3. Restart affected SAP HANA services
4. Verify patch application and test functionality
🔧 Temporary Workarounds
Restrict Local High-Privilege Access
allLimit the number of users with local high-privilege access to SAP HANA systems
Network Segmentation
allIsolate SAP HANA systems from general user networks to reduce attack surface
🧯 If You Can't Patch
- Implement strict access controls to limit local high-privilege users
- Monitor for unusual connection parameter patterns in JDBC client logs
🔍 How to Verify
Check if Vulnerable:
Check SAP HANA JDBC Client version against affected versions listed in SAP Note 3643385Check Version:
Check SAP HANA administration console or consult SAP documentation for version verification commandsVerify Fix Applied:
Verify patch application through SAP HANA administration tools and confirm version is updated beyond vulnerable range📡 Detection & Monitoring
Log Indicators:
- Unusual connection parameter patterns in JDBC client logs
- Multiple failed connection attempts with crafted parameters
- Unexpected code loading events
Network Indicators:
- Unusual local connection patterns to SAP HANA JDBC ports
SIEM Query:
Search for 'SAP HANA JDBC' AND ('unusual parameter' OR 'crafted connection' OR 'code loading') in application logs