CVE-2023-28763 : Security Advisory and Response

This CVE-2023-28763 was assigned by SAP and published on April 11, 2023. The vulnerability affects SAP NetWeaver AS for ABAP and ABAP Platform versions 740, 750, 751, 752, 753, 754, 755, 756, 757, and 791. An attacker authenticated as a non-administrative user can exploit this vulnerability to craft a request with specific parameters that can consume server resources significantly, leading to unavailability over the network without any user interaction.

Understanding CVE-2023-28763

This section covers a detailed understanding of the CVE-2023-28763 vulnerability.

What is CVE-2023-28763?

CVE-2023-28763 is a vulnerability in SAP NetWeaver AS for ABAP and ABAP Platform that allows an attacker with non-administrative privileges to create a request that consumes server resources and renders it unavailable over the network.

The Impact of CVE-2023-28763

The impact of CVE-2023-28763 is classified as having a medium severity level. The attack complexity is low, but the availability impact is high, leading to a Denial of Service (DoS) condition.

Technical Details of CVE-2023-28763

In this section, we delve into the technical aspects of the CVE-2023-28763 vulnerability.

Vulnerability Description

The vulnerability in SAP NetWeaver AS for ABAP and ABAP Platform versions 740, 750, 751, 752, 753, 754, 755, 756, 757, and 791 allows attackers to exhaust server resources, causing a DoS condition.

Affected Systems and Versions

The affected systems include SAP NetWeaver AS for ABAP and ABAP Platform versions 740, 750, 751, 752, 753, 754, 755, 756, 757, and 791.

Exploitation Mechanism

An attacker, authenticated as a non-administrative user, can exploit the vulnerability by crafting a specific request with parameters that overload the server's resources, leading to network unavailability.

Mitigation and Prevention

Protecting systems from the CVE-2023-28763 vulnerability is crucial to maintain security and availability. Here are some key steps to mitigate the risk:

Immediate Steps to Take

Implement access controls to restrict non-administrative users from performing actions that could consume excessive resources.
Monitor server performance for unusual spikes in resource usage.

Long-Term Security Practices

Stay updated with security advisories and patches provided by SAP.
Conduct regular security assessments to identify and address vulnerabilities proactively.

Patching and Updates

Apply the latest patches and updates released by SAP for NetWeaver AS for ABAP and ABAP Platform to address the CVE-2023-28763 vulnerability and enhance system security.