CVE-2023-49580
📋 TL;DR
This vulnerability in SAP GUI for Windows and Java allows unauthenticated attackers to access restricted information and create ABAP List Viewer layout configurations, potentially increasing response times. It affects SAP_BASIS versions 755-758. Systems with exposed SAP GUI interfaces are vulnerable.
💻 Affected Systems
- SAP GUI for Windows
- SAP GUI for Java
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Unauthenticated attackers access confidential business data, manipulate system configurations, and degrade performance through denial-of-service conditions.
Likely Case
Information disclosure of sensitive SAP data and performance degradation through configuration manipulation.
If Mitigated
Limited impact if systems are properly segmented and access controls prevent unauthenticated connections.
🎯 Exploit Status
Unauthenticated access makes exploitation straightforward if vulnerable systems are reachable.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply SAP Note 3385711
Vendor Advisory: https://me.sap.com/notes/3385711
Restart Required: Yes
Instructions:
1. Download and apply SAP Note 3385711 patch. 2. Restart affected SAP GUI instances. 3. Verify patch application through version checks.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to SAP GUI interfaces to trusted networks only.
Access Control Lists
allImplement firewall rules to block unauthenticated access to SAP GUI ports.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate SAP GUI from untrusted networks.
- Monitor for unusual access patterns and configuration changes in ABAP List Viewer.
🔍 How to Verify
Check if Vulnerable:
Check SAP_BASIS version in SAP GUI or system administration tools. Versions 755-758 are vulnerable.Check Version:
In SAP GUI: System → Status → check SAP_BASIS component versionVerify Fix Applied:
Verify SAP Note 3385711 is applied and SAP_BASIS version is updated beyond affected range.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated access attempts to SAP GUI
- Unexpected ABAP List Viewer configuration changes
- Increased response times in SAP transactions
Network Indicators:
- Unusual traffic to SAP GUI ports from untrusted sources
- Multiple failed authentication attempts followed by configuration changes
SIEM Query:
source="sap_gui" AND (event_type="unauthorized_access" OR event_type="configuration_change")