On 08.09.2020 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within ABAP.
SAP Note 2958563 addresses "[CVE-2020-6318] Code Injection vulnerability in SAP NetWeaver (ABAP Server) and ABAP Platform" to prevent code injection with a hot news risk for exploitation.
A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process , the team suggests.
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.
Risk specificationSAP NetWeaver (ABAP Server, up to release 7.40) and ABAP Platform (greater than release 7.40) allow an authenticated user to exploit these products potentially enabling to take complete control of the products, including viewing, changing, or deleting data by injecting code into the working memory which is subsequently executed by the application.
Implement the patch, wherever applicable. After installing the patch values of specific input parameters are now ignored.
The advisory 2958563 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
- SAP_BW 700-702 4
- SAP_BW 710-711 2
- SAP_BW 730 4
- SAP_BW 731 5
- SAP_BW 740 5
- SAP_BW 750-755 6
- SAP_BW_VIRTUAL_COMP 701 2
- 9.9 [CVE-2021-21466] Code Injection in SAP Business Warehouse and SAP BW/4HANA
- 9.1 [CVE-2020-6248] Code injection in SAP Adaptive Server Enterprise (Backup Server)
- 9.1 [CVE-2020-26838] Code Injection vulnerability in SAP Business Warehouse (Master Data Management) and SAP BW4HANA
- 9.1 [CVE-2020-26808] Code Injection in SAP AS ABAP and S/4 HANA (DMIS)
- 8.2 [CVE-2020-6208] Remote Code Execution in SAP Business Objects Business Intelligence Platform (Crystal Reports)