Advisory
A note with CVSS 6.5 for component BC-MID-ICF was released by SAP on 14.03.2023. The correction/advisory 3296328 was described with "[CVE-2023-27270] Denial of Service (DoS) in SAP NetWeaver AS for ABAP and ABAP Platform" and affects the system type ABAP.
A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process.
The vulnerability addressed is denial of service (dos) within ABAP.
Missing authority checks are still the most common security defect related to authorizations in custom code. Since SAP uses an explicit authorization model, an authority checks must be coded in order to be executed. If an explicit check is not coded, all users have access. This type of vulnerability not only exists in SAP standard it also exists in customer coding. Check your custom developments for vulnerabilities that pose a risk to your systems. SecurityBridge helps detect code vulnerabilities before they are implemented in production. Denial of Service (DoS) attacks that take a system offline may lead to significant cost for the company, studies quantify the costs in average between 4 and 5 millions dollars. Business continuity requires SAP systems staying online. The CVSS scores or vulnerability descriptions are not enough to represent how a simple bug can lead to a significant loss for companies.
Risk specification
SAP ABAP test classes have multiple vulnerabilities that allow an attacker to entirely consume all system resources by sending a specially created request, resulting in a denial of service.Solution
The vulnerable code has been commented out and can no longer be executed
Affected System
The advisory 3296328 describes a problem within an ABAP based systems of a specific version. Affected versions are described below. ABAP software is deployed in various software components and is widely used within the SAP product portfolio.
SAP NetWeaver Application Server (formally known as SAP Web Application Server) is a building block of SAP NetWeaver. It is the foundation for most software products developed by SAP SE. SAP NetWeaver systems exist with Java and/or ABAP stacks. The advisory could be relevant for single and dual-stack ABAP installations.
The advisory is valid for
- 7.5 [CVE-2021-20223] Multiple Vulnerabilities in SQlite bundled with SAPUI5
- 7.5 [CVE-2023-40308] Memory Corruption vulnerability in SAP CommonCryptoLib
- 7.5 [CVE-2023-44487 ] Denial of service (DOS) in SAP HANA XS Classic and HANA XS Advanced
- 7.5 [CVE-2021-21446] Denial of service (DOS) in SAP NetWeaver AS ABAP and ABAP Platform
- 6.5 [CVE-2024-30218] Denial of service (DOS) vulnerability in SAP NetWeaver AS ABAP and ABAP Platform
