CVE-2021-27632 : Vulnerability Insights and Analysis

A detailed overview of CVE-2021-27632 highlighting its impact, technical details, and mitigation steps.

Understanding CVE-2021-27632

In this section, we will delve into the specifics of CVE-2021-27632.

What is CVE-2021-27632?

CVE-2021-27632 affects SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) versions, where an unauthenticated attacker can crash the system by sending a specially crafted packet due to improper input validation.

The Impact of CVE-2021-27632

This vulnerability allows attackers to render the system unavailable without accessing or modifying any data.

Technical Details of CVE-2021-27632

Let's explore the technical aspects of CVE-2021-27632.

Vulnerability Description

The vulnerability arises from improper input validation in the method EnqConvUniToSrvReq(), leading to system crashes.

Affected Systems and Versions

SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) versions including KRNL32NUC - 7.22, 7.22EXT, KRNL64NUC - 7.22, 7.22EXT, 7.49, KRNL64UC - 8.04, 7.22, 7.22EXT, 7.49, 7.53, 7.73, KERNEL - 7.22, 8.04, 7.49, 7.53, 7.73 are impacted.

Exploitation Mechanism

An unauthenticated attacker can exploit this vulnerability by sending a specially crafted packet over a network.

Mitigation and Prevention

Discover the steps to mitigate and prevent CVE-2021-27632.

Immediate Steps to Take

Patching systems and implementing network security measures are crucial immediately after vulnerability identification.

Long-Term Security Practices

Regular security updates, network monitoring, and access control mechanisms can provide long-term protection.

Patching and Updates

Regularly applying security patches provided by SAP and staying informed about security advisories are essential.