CVE-2021-27630 : What You Need to Know
Discover the impact of CVE-2021-27630 in SAP NetWeaver ABAP Server and ABAP Platform, allowing system crashes by exploiting improper input validation. Learn how to mitigate this high-severity vulnerability.
A security vulnerability, CVE-2021-27630, has been identified in SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) that allows an unauthenticated attacker to crash the system, rendering it unavailable without specific system knowledge.
Understanding CVE-2021-27630
This section provides insights into the nature of the CVE-2021-27630 vulnerability.
What is CVE-2021-27630?
The vulnerability in SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) allows an attacker to trigger an internal error in the system through a specially crafted network packet, leading to system crashing and unavailability.
The Impact of CVE-2021-27630
In the attack scenario, an unauthenticated attacker can crash the system without accessing or altering any data within the SAP NetWeaver ABAP Server and ABAP Platform.
Technical Details of CVE-2021-27630
This section delves into the technical aspects of CVE-2021-27630.
Vulnerability Description
The vulnerability arises from improper input validation in the EnqConvUniToSrvReq() method, allowing the attacker to send a crafted packet causing system errors.
Affected Systems and Versions
SAP NetWeaver ABAP Server and ABAP Platform versions - KRNL32NUC 7.22, KRNL64NUC 7.22, 7.49, KRNL64UC 8.04, 7.22, 7.53, 7.73, and KERNEL 7.22, 8.04, 7.49, 7.53, 7.73 are impacted by this vulnerability.
Exploitation Mechanism
An unauthenticated attacker can exploit this vulnerability by sending a specially crafted packet over the network, triggering an internal system error.
Mitigation and Prevention
Explore the steps to mitigate and prevent exploitation of CVE-2021-27630.
Immediate Steps to Take
Organizations should apply security patches and updates provided by SAP to address the vulnerability promptly.
Long-Term Security Practices
Implement robust security measures, conduct regular security audits, and monitor network traffic to enhance overall system security.
Patching and Updates
Regularly check for security advisories and updates from SAP to maintain a secure environment.