CVE-2022-39799 in Fiori Launchpad
Summary
by MITRE • 09/13/2022
An attacker with no prior authentication could craft and send malicious script to SAP GUI for HTML within Fiori Launchpad, resulting in reflected cross-site scripting attack. This could lead to stealing session information and impersonating the affected user.
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Analysis
by VulDB Data Team • 06/10/2025
The vulnerability identified as CVE-2022-39799 represents a critical reflected cross-site scripting flaw within SAP GUI for HTML components integrated into the Fiori Launchpad environment. This security weakness arises from insufficient input validation and output encoding mechanisms that fail to properly sanitize user-supplied data before incorporating it into dynamic web content. The vulnerability specifically affects the processing of script parameters within the SAP GUI for HTML framework, which serves as a bridge between the SAP backend systems and web-based user interfaces. Attackers can exploit this flaw by crafting malicious URLs or form submissions that contain specially crafted script payloads designed to execute within the context of authenticated users' browsers.
The technical implementation of this vulnerability stems from improper handling of HTTP parameters and URL components within the SAP Fiori Launchpad framework. When users navigate to specific SAP applications or interact with certain interface elements, the system processes user inputs without adequate sanitization measures. This creates an environment where attacker-controlled content can be seamlessly injected into the web application's response, particularly affecting the SAP GUI for HTML rendering engine. The reflected nature of this XSS vulnerability means that malicious payloads are immediately reflected back to the user's browser without being stored on the server, making it particularly dangerous for session hijacking and credential theft operations.
The operational impact of CVE-2022-39799 extends beyond simple script execution, as it provides attackers with the capability to steal active user sessions and potentially impersonate legitimate users within the SAP ecosystem. Successful exploitation could enable unauthorized access to sensitive business data, modification of critical system configurations, and execution of privileged operations within the SAP environment. The vulnerability affects organizations using SAP Fiori Launchpad implementations where SAP GUI for HTML components are deployed, potentially compromising thousands of user accounts if not addressed promptly. This risk is particularly elevated in enterprise environments where SAP systems handle mission-critical business processes and contain extensive sensitive data repositories.
Organizations should implement immediate mitigations including comprehensive input validation and output encoding controls within the SAP GUI for HTML components, along with proper content security policy implementations to prevent unauthorized script execution. The fix requires updates to the SAP Fiori Launchpad configuration and SAP GUI for HTML rendering components to ensure all user-supplied inputs are properly sanitized before being processed. Security teams should also implement web application firewalls and monitoring solutions to detect and prevent exploitation attempts. This vulnerability aligns with CWE-79 which addresses cross-site scripting flaws and maps to ATT&CK technique T1566 related to spearphishing with malicious attachments or links, emphasizing the need for robust web application security controls in enterprise SAP deployments. Organizations must also conduct thorough security assessments of their SAP environments to identify similar vulnerabilities and ensure comprehensive protection against persistent threats targeting web-based enterprise applications.