CVE-2020-6318
📋 TL;DR
CVE-2020-6318 is a critical code injection vulnerability in SAP NetWeaver ABAP Server and ABAP Platform that allows remote attackers to execute arbitrary code. This enables complete system compromise including data theft, modification, or destruction. Organizations running affected SAP ABAP systems up to release 7.40 are vulnerable.
💻 Affected Systems
- SAP NetWeaver ABAP Server
- SAP ABAP Platform
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover allowing attacker to execute arbitrary code, access sensitive business data, modify or delete critical information, and potentially pivot to other systems in the network.
Likely Case
Data exfiltration, system compromise, and business disruption through code execution leading to unauthorized access to SAP business data and processes.
If Mitigated
Limited impact if proper network segmentation, access controls, and monitoring are in place, though the vulnerability still presents significant risk.
🎯 Exploit Status
Exploitation requires some SAP ABAP knowledge but public exploit code exists. Attackers need some level of access to the SAP system.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply SAP Note 2958563
Vendor Advisory: https://launchpad.support.sap.com/#/notes/2958563
Restart Required: Yes
Instructions:
1. Download SAP Note 2958563 from SAP Support Portal. 2. Apply the correction instructions provided in the note. 3. Restart the affected SAP systems. 4. Verify the patch is applied correctly.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to SAP systems to only trusted IP addresses and networks
Use firewall rules to limit access to SAP ports (typically 3200+, 8000, 443)
SAP Profile Parameter Restrictions
allImplement stricter SAP profile parameters to limit code execution capabilities
Review and tighten abap/security_profile parameters in SAP system
🧯 If You Can't Patch
- Implement strict network segmentation and isolate SAP systems from untrusted networks
- Enhance monitoring and logging of SAP system activities, particularly code execution attempts
🔍 How to Verify
Check if Vulnerable:
Check SAP system version and verify if SAP Note 2958563 is applied using transaction SNOTE or by checking system statusCheck Version:
Execute transaction SM51 or check system information in SAP GUIVerify Fix Applied:
Verify SAP Note 2958563 is marked as 'Implemented' in transaction SNOTE and test system functionality📡 Detection & Monitoring
Log Indicators:
- Unusual ABAP code execution patterns
- Suspicious memory operations
- Unauthorized program executions in SAP logs
Network Indicators:
- Unusual traffic patterns to SAP ABAP services
- Multiple failed authentication attempts followed by successful connections
SIEM Query:
source="sap_audit_log" AND (event_type="code_execution" OR event_type="memory_injection")🔗 References
- http://packetstormsecurity.com/files/167229/SAP-Application-Server-ABAP-ABAP-Platform-Code-Injection-SQL-Injection-Missing-Authorization.html
- http://seclists.org/fulldisclosure/2022/May/42
- https://launchpad.support.sap.com/#/notes/2958563
- https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=557449700
- http://packetstormsecurity.com/files/167229/SAP-Application-Server-ABAP-ABAP-Platform-Code-Injection-SQL-Injection-Missing-Authorization.html
- http://seclists.org/fulldisclosure/2022/May/42
- https://launchpad.support.sap.com/#/notes/2958563
- https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=557449700
