On 12.07.2016 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within ABAP.
SAP Note 2142551 addresses "Whitelist service for Clickjacking Framing Protection in AS ABAP" to prevent clickjacking with a medium risk for exploitation.
A workaround does exist, according to SAP Security Advisory team. It is advisable to implement the correction as project, 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 specificationClickjacking (also known as ‘UI Redress attack’ or ‘UI redressing’) is a technique in which the mouse clicks of an unsuspecting user on a web browser are hijacked and the user is tricked to perform unintended actions on a website by an unauthenticated attacker.
This note provides the Whitelist service for Clickjacking Framing Protection in AS ABAP Circumstances exist that prevent the timely installation of a patch provided by the manufacturer. In such cases, you may consider applying the suggested workaround as a temporary or compensating mitigation: "Clickjacking protection engine on IDS/IPS/firewall/reverse proxy systems. ".
The advisory 2142551 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_UI 740
- SAP_UI 750 13
- SAP_BASIS 700-702 33
- SAP_BASIS 710-711 19
- SAP_BASIS 730 32
- SAP_BASIS 731 40
- 5.4 [CVE-2021-21444] Clickjacking vulnerability in SAP Business Objects Business Intelligence Platform (CMC and BI Launchpad)
- 5.4 Clickjacking vulnerability in Cloud Integration Content of SAP Process Integration
- 5.4 Clickjacking vulnerability in SAP Process Integration (Integration Builder Framework)
- 4.6 Clickjacking vulnerability in Runtime Workbench of SAP Process Integration
- 0.0 Clickjacking vulnerability in Adapter Runtime of SAP Process Integration