CVE-2022-22543 : Security Advisory and Response

A Denial-of-Service vulnerability in SAP NetWeaver Application Server for ABAP (Kernel) and ABAP Platform (Kernel) can allow an unauthorized user to disrupt the SAP Web Dispatcher or Kernel work process.

Understanding CVE-2022-22543

This CVE affects various versions of SAP NetWeaver Application Server for ABAP (Kernel) and ABAP Platform (Kernel), potentially leading to a Denial-of-Service attack.

What is CVE-2022-22543?

The vulnerability lies in the insufficient validation of sap-passport information, enabling an unauthorized remote user to provoke a breakdown of the SAP Web Dispatcher or Kernel work process.

The Impact of CVE-2022-22543

If exploited, the vulnerability can result in a Denial-of-Service attack, causing a crash in the affected process. However, the crashed process can be restarted immediately without affecting other processes.

Technical Details of CVE-2022-22543

The technical details include the vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

SAP NetWeaver Application Server for ABAP (Kernel) and ABAP Platform (Kernel) versions KERNEL 7.22, 8.04, 7.49, 7.53, 7.77, 7.81, 7.85, 7.86, 7.87, KRNL64UC 8.04, 7.22, 7.22EXT, 7.49, 7.53, KRNL64NUC 7.22, 7.22EXT, and 7.49 do not sufficiently validate sap-passport information, leading to potential Denial-of-Service attacks.

Affected Systems and Versions

The vulnerability impacts various versions of SAP NetWeaver Application Server for ABAP (Kernel) and ABAP Platform (Kernel) including KERNEL 7.22, 8.04, 7.49, 7.53, 7.77, 7.81, 7.85, 7.86, 7.87, KRNL64UC 8.04, 7.22, 7.22EXT, 7.49, 7.53, KRNL64NUC 7.22, 7.22EXT, and 7.49.

Exploitation Mechanism

An unauthorized remote user can exploit the lack of validation in sap-passport information to disrupt the SAP Web Dispatcher or Kernel work process, potentially leading to a Denial-of-Service scenario.

Mitigation and Prevention

To mitigate the CVE-2022-22543 vulnerability, immediate steps should be taken along with long-term security practices and timely patching and updates.

Immediate Steps to Take

Organizations using the affected versions of SAP NetWeaver should apply relevant security patches immediately to prevent exploitation.

Long-Term Security Practices

It is essential to establish robust security measures, regularly update systems, conduct security assessments, and implement access controls to enhance overall system security.

Patching and Updates

Regularly monitor and apply security patches provided by SAP to address vulnerabilities and ensure the security of SAP NetWeaver Application Server for ABAP (Kernel) and ABAP Platform (Kernel).