CVE-2020-26810
📋 TL;DR
This vulnerability allows unauthenticated attackers to send specially crafted requests to SAP Commerce Cloud's Accelerator Payment Mock module, causing denial of service by making the service unavailable. It affects SAP Commerce Cloud versions 1808, 1811, 1905, and 2005. The attack has no impact on data confidentiality or integrity.
💻 Affected Systems
- SAP Commerce Cloud (Accelerator Payment Mock)
📦 What is this software?
Commerce Cloud \(accelerator Payment Mock\) by Sap
View all CVEs affecting Commerce Cloud \(accelerator Payment Mock\) →
Commerce Cloud \(accelerator Payment Mock\) by Sap
View all CVEs affecting Commerce Cloud \(accelerator Payment Mock\) →
⚠️ Risk & Real-World Impact
Worst Case
Complete unavailability of SAP Commerce Cloud service, disrupting business operations until service is restored.
Likely Case
Service disruption affecting e-commerce transactions and business processes that rely on the Commerce platform.
If Mitigated
Minimal impact if proper network controls and patching are implemented.
🎯 Exploit Status
Exploitation requires network access to the vulnerable module URL but no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply SAP Security Note 2975170
Vendor Advisory: https://launchpad.support.sap.com/#/notes/2975170
Restart Required: Yes
Instructions:
1. Download and apply SAP Security Note 2975170. 2. Restart SAP Commerce Cloud services. 3. Verify the patch is applied successfully.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to the Accelerator Payment Mock module URL to trusted sources only.
Module Disablement
allDisable the Accelerator Payment Mock module if not required for business operations.
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to vulnerable endpoints.
- Deploy web application firewall (WAF) rules to block malicious requests to the vulnerable URL.
🔍 How to Verify
Check if Vulnerable:
Check if SAP Commerce Cloud is running versions 1808, 1811, 1905, or 2005 and if the Accelerator Payment Mock module is enabled.Check Version:
Check SAP Commerce Cloud version through administration console or system properties.Verify Fix Applied:
Verify that SAP Security Note 2975170 is applied and test that crafted requests to the module URL no longer cause service disruption.📡 Detection & Monitoring
Log Indicators:
- Unusual high volume of requests to Accelerator Payment Mock module URL
- Service restart or crash logs following specific request patterns
Network Indicators:
- Multiple crafted requests to the vulnerable endpoint from single or multiple sources
SIEM Query:
source_ip AND (destination_port:443 OR destination_port:80) AND url_path:"/acceleratorservices/payment/mock" AND status_code:500