CVE-2023-27270 : What You Need to Know

In this article, we will delve into the details of CVE-2023-27270, a vulnerability identified in SAP NetWeaver Application Server for ABAP and ABAP Platform that could potentially lead to a Denial of Service (DoS) attack.

Understanding CVE-2023-27270

This section will provide an in-depth understanding of the CVE-2023-27270 vulnerability affecting SAP NetWeaver Application Server for ABAP and ABAP Platform.

What is CVE-2023-27270?

CVE-2023-27270 is a vulnerability found in versions 700, 701, 702, 731, 740, 750, 751, 752, 753, 754, 755, 756, 757, and 791 of SAP NetWeaver Application Server for ABAP and ABAP Platform. The vulnerability allows an attacker authenticated as a non-administrative user to craft a request with specific parameters, causing the server's resources to be consumed to the extent that it becomes unavailable. However, the attacker does not gain the ability to view or modify any information.

The Impact of CVE-2023-27270

The impact of CVE-2023-27270 is rated as MEDIUM severity based on the CVSS v3.1 scoring system. The attack complexity is low, the attack vector is network-based, and the availability impact is high. While there is no impact on confidentiality or integrity, the privileges required for exploitation are low. Organizations using affected versions of SAP NetWeaver Application Server for ABAP and ABAP Platform are at risk of potential denial of service attacks.

Technical Details of CVE-2023-27270

This section will provide more technical insights into the vulnerability, including the description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in SAP NetWeaver Application Server for ABAP and ABAP Platform allows an authenticated non-administrative user to craft a request that consumes server resources to the point of making it unavailable. This issue stems from a class for test purposes.

Affected Systems and Versions

Versions 700, 701, 702, 731, 740, 750, 751, 752, 753, 754, 755, 756, 757, and 791 of SAP NetWeaver Application Server for ABAP and ABAP Platform are affected by this vulnerability.

Exploitation Mechanism

An attacker with non-administrative user authentication can manipulate request parameters to trigger resource consumption, leading to a denial of service condition on the affected server.

Mitigation and Prevention

In this section, we will discuss the steps that can be taken to mitigate and prevent exploitation of CVE-2023-27270.

Immediate Steps to Take

Organizations using the affected versions of SAP NetWeaver Application Server for ABAP and ABAP Platform should consider implementing access controls, monitoring resource usage, and applying security patches provided by SAP.

Long-Term Security Practices

To enhance the overall security posture, organizations should regularly update their software, conduct security assessments, train employees on security best practices, and stay informed about potential vulnerabilities in their environment.

Patching and Updates

It is crucial for affected organizations to apply security patches released by SAP promptly to address the CVE-2023-27270 vulnerability and reduce the risk of exploitation by malicious actors. Regularly updating the software can help in strengthening the security defenses against known vulnerabilities.