CVE-2021-44233
📋 TL;DR
This vulnerability in SAP GRC Access Control allows authenticated users to bypass authorization checks, potentially escalating their privileges within the system. It affects SAP GRC Access Control versions V1100_700, V1100_731, and V1200_750. Users with any level of authentication could exploit this flaw.
💻 Affected Systems
- SAP GRC Access Control
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker could gain administrative privileges, access sensitive data, modify critical configurations, or disrupt GRC operations across the entire SAP landscape.
Likely Case
Internal users or compromised accounts could elevate privileges to access unauthorized functions or data within the GRC Access Control module.
If Mitigated
With proper network segmentation and strict access controls, impact would be limited to the GRC Access Control module only.
🎯 Exploit Status
Exploitation requires authenticated access but authorization bypass is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply SAP Note 3080816
Vendor Advisory: https://launchpad.support.sap.com/#/notes/3080816
Restart Required: Yes
Instructions:
1. Download SAP Note 3080816 from SAP Support Portal. 2. Apply the security patch to affected SAP GRC Access Control systems. 3. Restart the SAP system. 4. Verify patch application through transaction SNOTE.
🔧 Temporary Workarounds
Restrict User Privileges
allTemporarily reduce privileges for non-administrative users to minimize potential damage from exploitation.
Use transaction PFCG to review and restrict user roles
Enhanced Monitoring
allIncrease logging and monitoring of authorization changes and privilege escalations.
Configure security audit logging in transaction SM19
🧯 If You Can't Patch
- Implement strict network segmentation to isolate SAP GRC systems from other critical systems
- Enforce multi-factor authentication and implement strict access controls for all SAP GRC users
🔍 How to Verify
Check if Vulnerable:
Check SAP GRC Access Control version in transaction SM51 or via SAP GUI system status. If version is V1100_700, V1100_731, or V1200_750 without Note 3080816 applied, system is vulnerable.Check Version:
In SAP GUI: System → Status, or use transaction SM51Verify Fix Applied:
Verify SAP Note 3080816 is applied using transaction SNOTE or check version information in system status.📡 Detection & Monitoring
Log Indicators:
- Unusual authorization changes
- Privilege escalation attempts
- Access to restricted transactions by non-admin users
Network Indicators:
- Unusual authentication patterns to SAP GRC systems
- Increased traffic to authorization-related transactions
SIEM Query:
source="sap_audit_log" AND (event_type="authorization_change" OR transaction="SU01" OR transaction="PFCG") AND user!="administrator"