CVE-2022-28771
📋 TL;DR
CVE-2022-28771 is an authentication bypass vulnerability in SAP Business One License Service API that allows unauthenticated attackers to send malicious HTTP requests. This can lead to denial of service, potentially making the entire application inaccessible. Organizations running SAP Business One version 10.0 are affected.
💻 Affected Systems
- SAP Business One
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete application unavailability through denial of service, disrupting business operations dependent on SAP Business One.
Likely Case
Service disruption or application downtime affecting business processes.
If Mitigated
Minimal impact with proper network segmentation and authentication controls in place.
🎯 Exploit Status
Exploitation requires network access to the vulnerable service but no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply SAP Note 3157613
Vendor Advisory: https://launchpad.support.sap.com/#/notes/3157613
Restart Required: Yes
Instructions:
1. Download and apply SAP Note 3157613 patch. 2. Restart SAP Business One services. 3. Verify the patch is applied correctly.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to SAP Business One License Service API to trusted sources only.
Use firewall rules to block unauthorized access to the service port
Authentication Enforcement
allImplement additional authentication layers before the vulnerable API.
Configure reverse proxy with authentication
Implement API gateway with auth
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure
- Monitor for unusual HTTP requests to the License Service API
🔍 How to Verify
Check if Vulnerable:
Check if SAP Business One version 10.0 is running without SAP Note 3157613 applied.Check Version:
Check SAP Business One administration console or version filesVerify Fix Applied:
Verify SAP Note 3157613 is installed and check service logs for successful authentication.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated HTTP requests to License Service API
- Unusual request patterns or high volume
Network Indicators:
- HTTP traffic to License Service API without authentication headers
- Abnormal request rates
SIEM Query:
source="sap_business_one" AND (event="license_api_request" AND auth_status="failed")