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 2911704
was released on
09.06.2020 and deals with
"[CVE-2020-6266] URL redirection in SAP Fiori for SAP S/4HANA" within ABAP.
We advice you to follow the instructions, to resolve
url redirection vulnerability
medium potential for exploitation
in component PLM-FIO-DMS.
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 specificationSAP Fiori for SAP S/4HANA was earlier allowed to redirect users to a malicious site due to insufficient URL validation.
URL and Mime type validations has been added in the frontend.
The advisory 2911704 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
- UIS4HOP1 200
- UIS4HOP1 300
- UIS4HOP1 400
- UIS4HOP1 500