SAP takes the security of its vast product portfolio very seriously and thus releases security fixes for
vulnerabilities reported by external researchers and their customers every second Tuesday of the month.
SAP Note 2983367
was released on
08.12.2020 and deals with
"[CVE-2020-26838] Code Injection vulnerability in SAP Business Warehouse (Master Data Management) and SAP BW4HANA" within ABAP.
We advice you to follow the instructions, to resolve
hot news potential for exploitation
in component BW-WHM-DBA-MD.
According to SAP Security Advisory team a workaround does not exist. It is advisable to implement the correction as monthly patch process .
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 specificationThis note has been re-released with updated 'validity', and ‘Support Packages & Patches’ information. - SAP BW Master Data Management and SAP BW4HANA allows an attacker with high privileges ability to submit a crafted request to generate and execute code without requiring any user interaction.
For release 7.30 the affected function module has been equipped with a hard coded report name which is used by the only legitimated caller. Starting with release 7.40 in SAP BW/4HANA the function should not be used anymore and thus has been disabled, meaning the code was removed
The advisory 2983367 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
- DW4CORE 100 2
- DW4CORE 200 2
- SAP_BW 700-702 4
- SAP_BW 730 4
- SAP_BW 731 5
- SAP_BW 740 5
- SAP_BW 750-755 6
- SAP_BW 782 4
- 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-2020-6318] Code Injection vulnerability in SAP NetWeaver (ABAP Server) and ABAP Platform
- 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)