Advisory
A note with CVSS 4.3 for component CA-WUI-UI-TAG was released by SAP on 14.02.2023. The correction/advisory 2788178 was described with "[CVE-2023-24525] Cross-Site Scripting (XSS) vulnerability in SAP CRM WebClient UI" and affects the system type ABAP.
A workaround exists, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process.
The vulnerability addressed is cross-site scripting (xss) within ABAP.
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.
Cross-site scripting (XSS) is the name of a class of security vulnerabilities that can occur in web-based
applications. XSS combines
all vulnerabilities that allow an attacker to inject HTML Markup and/or JavaScript into the front end of the
affected web application.
XSS attacks can occur whenever the application dynamically creates its HTML/JavaScript/CSS content, which is passed
to the
user's web browser, and attacker-controlled values are used in this process. If these values are included in the
generated code without proper validation and encoding, the attacker is able to include arbitrary
coding snippets into the application's front end. The code is then rendered by the victim's web browser and
interpreted in the victim's current authentication context.
Risk specification
SAP CRM WebClient UI does not sufficiently encode user-controlled inputs, resulting in Cross-Site Scripting (XSS) vulnerability which would allow an unauthenticated attacker to steal session credentials.Solution
The respective input/output encoding has been added to prevent a successful XSS attack. Although an alternative solution exists, it is advisable to apply the correction! This is the workaround, which was suggested by the SAP security experts: "Cross-site scripting/request forgery filter engine on IDS/IPS/firewall systems.".
Affected System
The advisory 2788178 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
- S4FND 102 16
- S4FND 103 16
- WEBCUIF 748 14
- WEBCUIF 800 14
- WEBCUIF 801 14
- 8.8 [CVE-2024-22126] Cross Site Scripting vulnerability in NetWeaver AS Java (User Admin Application)
- 8.7 [CVE-2023-42472] Insufficient File type validation in SAP BusinessObjects Business Intelligence Platform (Web Intelligence HTML interface)
- 8.3 [CVE-2021-33702] Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Enterprise Portal
- 8.3 [CVE-2021-33703] Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Enterprise Portal
- 8.2 [CVE-2023-33991] Stored Cross-Site Scripting vulnerability in SAP UI5 (Variant Management)
