CVE-2021-40495 : What You Need to Know

SAP NetWeaver AS ABAP and ABAP Platform has multiple Denial-of-Service vulnerabilities affecting versions 740 to 755.

Understanding CVE-2021-40495

This CVE involves Denial-of-Service vulnerabilities that can impact SAP NetWeaver AS ABAP and ABAP Platform.

What is CVE-2021-40495?

There are multiple Denial-of-Service vulnerabilities in SAP NetWeaver Application Server for ABAP and ABAP Platform - versions 740, 750, 751, 752, 753, 754, 755. An unauthorized attacker can use the public SICF service /sap/public/bc/abap to reduce the performance of SAP NetWeaver Application Server ABAP and ABAP Platform.

The Impact of CVE-2021-40495

Affects the performance of SAP NetWeaver AS ABAP and ABAP Platform
Unauthorized attackers can exploit the SICF service to conduct Denial-of-Service attacks

Technical Details of CVE-2021-40495

This section covers specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerability enables Denial-of-Service attacks on SAP NetWeaver AS ABAP and ABAP Platform.

Affected Systems and Versions

SAP NetWeaver AS ABAP and ABAP Platform versions < 740 to < 755

Exploitation Mechanism

Unauthorized attackers exploit the public SICF service /sap/public/bc/abap to degrade system performance

Mitigation and Prevention

Guidelines to address the vulnerability.

Immediate Steps to Take

Apply relevant security patches provided by SAP
Restrict access to the public SICF service
Monitor system performance for any unusual activities

Long-Term Security Practices

Regularly update SAP systems to the latest versions
Implement network security measures to detect and prevent DoS attacks

Patching and Updates

Stay informed about security updates from SAP
Implement patches promptly to mitigate risks