CVE-2025-42911 in NetWeaver
Summary
by MITRE • 09/09/2025
SAP NetWeaver (Service Data Download) allows an authenticated user to call a remote-enabled function module, which could grant access to information about the SAP system and operating system. This leads to a low impact on confidentiality, with no effect on the integrity and availability of the application
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Analysis
by VulDB Data Team • 10/23/2025
SAP NetWeaver Service Data Download functionality presents a security vulnerability that enables authenticated users to invoke remote-enabled function modules, creating potential information disclosure risks within the SAP ecosystem. This vulnerability resides in the service data download component of SAP NetWeaver, which is designed to facilitate data retrieval operations but contains a flaw that allows unauthorized information gathering. The issue manifests when authenticated users can leverage specific function modules to extract system-level information that should remain restricted to authorized personnel only. The vulnerability specifically affects the confidentiality aspect of the SAP system's security model, as it permits the disclosure of system metadata, configuration details, and potentially operating system information that could be valuable to attackers planning more sophisticated attacks. The impact level is categorized as low for confidentiality, indicating that while information disclosure occurs, it does not immediately compromise the system's integrity or availability. This classification aligns with common vulnerability assessment methodologies where the primary concern is information exposure rather than system compromise. The vulnerability demonstrates a clear violation of the principle of least privilege, as authenticated users can access system information beyond their intended scope of operations. This behavior represents a potential pathway for attackers who have already gained some level of access to escalate their reconnaissance efforts and gather intelligence about the target SAP environment. The flaw essentially allows for passive information gathering that could be leveraged in conjunction with other vulnerabilities to plan more targeted attacks against the SAP infrastructure.
The technical implementation of this vulnerability stems from inadequate access controls within the remote-enabled function modules exposed through the Service Data Download interface. When authenticated users invoke these function modules, the system fails to properly validate or restrict the information that can be accessed through these endpoints. This misconfiguration allows for information disclosure that should be protected by proper authorization checks and access control mechanisms. The vulnerability is particularly concerning because it operates within the legitimate service interfaces that organizations typically expect to function properly, making it harder to detect through routine security monitoring. The function modules in question likely provide access to system metadata, configuration parameters, and potentially operating system details that are not properly sanitized or restricted during the information retrieval process. This technical flaw represents a weakness in SAP NetWeaver's security architecture where proper authorization boundaries are not maintained during data retrieval operations. The implementation likely lacks proper input validation and output filtering mechanisms that would normally prevent unauthorized information access through these interfaces. From a cybersecurity perspective, this vulnerability falls under the category of information disclosure vulnerabilities that can enable reconnaissance activities. The ATT&CK framework would classify this under initial access techniques where adversaries gather information about the target environment to plan subsequent operations. The CWE database would categorize this as a weakness in information flow control, specifically related to improper restriction of information flow through service interfaces. Organizations using SAP NetWeaver systems are particularly vulnerable to this type of reconnaissance attack, as it provides attackers with valuable intelligence about system configuration and operational details that could be used to identify additional vulnerabilities or plan more sophisticated attack vectors.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables attackers to gather intelligence that can be used in more advanced attack scenarios. While the immediate impact on system integrity and availability remains minimal, the information gathered through this vulnerability can significantly aid attackers in understanding the target environment's structure and configuration. This intelligence can be used to identify potential entry points, understand system dependencies, and plan more targeted attacks against other components of the SAP infrastructure. The low confidentiality impact rating does not diminish the potential for this vulnerability to be exploited as part of a broader attack strategy, particularly when combined with other reconnaissance activities. Organizations may experience indirect operational consequences as attackers use the gathered information to develop more sophisticated attack plans, potentially leading to more serious security incidents. The vulnerability's existence also indicates a broader security gap within the SAP NetWeaver platform's access control mechanisms, suggesting that other similar interfaces may also be vulnerable to similar issues. This creates a potential risk for organizations where the information disclosure could be used as a stepping stone to access other systems or components within the broader enterprise infrastructure. The vulnerability represents a failure in the security model's enforcement, where proper access controls are not consistently applied across all service interfaces. From a compliance perspective, this vulnerability could potentially impact regulatory requirements for data protection and system security, particularly in environments where strict access controls are mandated. Organizations should consider this vulnerability as part of their overall risk assessment and implement appropriate monitoring and mitigation strategies to prevent unauthorized information gathering activities through legitimate service interfaces.
Organizations should implement several mitigation strategies to address this vulnerability, beginning with the immediate application of SAP security patches and updates provided by SAP. The most effective approach involves ensuring that proper access controls are enforced for all remote-enabled function modules within the Service Data Download interface, preventing unauthorized information access through these legitimate service endpoints. Security configuration reviews should focus on implementing strict authorization checks and input validation for all function modules that provide access to system information. Network segmentation and monitoring of service data download activities can help detect suspicious access patterns that may indicate exploitation attempts. Organizations should also consider implementing additional logging and audit capabilities to track access to these function modules and identify potential unauthorized access attempts. The implementation of principle of least privilege principles should be enforced, ensuring that only authorized users have access to the specific function modules that provide system information. Regular security assessments and vulnerability scanning should include checks for similar issues in other SAP service interfaces to identify and address potential security gaps. From a defensive standpoint, organizations should monitor for indicators of compromise related to information gathering activities and implement appropriate network security controls to limit access to these service interfaces. The vulnerability highlights the importance of maintaining up-to-date security configurations and ensuring that all SAP systems are properly patched and configured to prevent unauthorized access to system information. Security teams should also consider implementing automated monitoring solutions that can detect unusual access patterns to service data download interfaces and alert security personnel to potential exploitation attempts. Proper training for system administrators and security personnel regarding the risks associated with service data download interfaces is essential for maintaining overall system security and preventing exploitation of similar vulnerabilities in the future.