Advisory
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 2984627
was released on
10.11.2020 and deals with
"[CVE-2020-26815] Security Vulnerabilities in SAP Fiori Launchpad (NewsTile Application)" within ABAP.
We advice you to follow the instructions, to resolve
server-side request forgery (ssrf)cross-site scripting (xss)
with a
high potential for exploitation
in component CA-FE-NEW.
According to SAP Security Advisory team a workaround does not exist. It is advisable to implement the correction as part of maintenance.
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 specification
This note contains two different security vulnerabilities. SAP Fiori Launchpad News tile Application allows an unauthorized attacker to send a crafted request to a vulnerable web application, resulting in Cross-site scripting and a Server Side Request Forgery.Solution
The application now properly escapes code to prevent the cross-site scripting vulnerability
Affected System
The advisory 2984627 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_BASIS 782
- SAP_UI 750 18
- SAP_UI 751 4
- SAP_UI 752 8
- SAP_UI 753 18
- SAP_UI 754 26
- SAP_UI 755 22
