CVE-2025-27433 in S-4HANA
Summary
by MITRE • 03/11/2025
The Manage Bank Statements in SAP S/4HANA allows authenticated attacker to bypass certain functionality restrictions of the application and upload files to a reversed bank statement. This vulnerability has a low impact on the application's integrity, with no effect on confidentiality and availability of the application.
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Analysis
by VulDB Data Team • 03/11/2025
The vulnerability identified as CVE-2025-27433 resides within the Manage Bank Statements functionality of SAP S/4HANA, representing a security flaw that enables authenticated attackers to circumvent intended application restrictions. This issue manifests through the unauthorized ability to upload files to reversed bank statements, creating a potential pathway for data manipulation within the financial processing framework. The vulnerability operates within the context of SAP's financial management systems where bank statement processing is critical for accurate accounting and compliance reporting. From a security perspective, this represents a bypass of access controls that should normally prevent modification of reversed financial records, potentially allowing attackers to introduce fraudulent data or alter existing records without proper authorization.
The technical implementation of this vulnerability stems from insufficient validation mechanisms within the file upload process for reversed bank statements. When users attempt to upload files to reversed statements, the system should enforce strict access controls and validation checks to ensure only authorized modifications can occur. However, the flaw allows authenticated users to bypass these protective measures, effectively undermining the integrity controls that govern financial data modification. This type of vulnerability typically falls under CWE-284 Access Control Issues, specifically related to insufficient access control enforcement during file operations. The vulnerability's classification indicates a weakness in the application's authorization model where the system fails to properly validate user permissions before allowing file upload operations to reversed financial records.
The operational impact of CVE-2025-27433 extends beyond simple data manipulation, as it can potentially compromise the financial audit trail and compliance reporting mechanisms within SAP S/4HANA environments. While the vulnerability is characterized as having low impact on application integrity, the ability to upload files to reversed bank statements could enable attackers to introduce false transactions or modify existing records in ways that may not be immediately apparent. This capability particularly affects the financial data processing workflow where reversed statements represent critical audit points that should remain immutable once processed. The vulnerability's potential for abuse aligns with ATT&CK technique T1566.001 Credential Access: Phishing, as it may be exploited by attackers who have already gained initial access to the system through social engineering or other means. The impact on financial data integrity could lead to significant compliance violations and potentially affect financial reporting accuracy, especially in regulated environments where audit trails must remain pristine.
Organizations should implement multiple layers of defense to mitigate this vulnerability, beginning with immediate application of SAP security notes and patches released for CVE-2025-27433. Network segmentation and monitoring of file upload activities within SAP environments can help detect anomalous behavior related to bank statement modifications. The implementation of privileged access management solutions can restrict who can perform file uploads to reversed statements, ensuring only authorized personnel have access to these critical functions. Regular security assessments of SAP environments should include specific testing of access controls for financial data modification processes, with particular attention to reversed statement handling. Additionally, organizations should consider implementing automated monitoring solutions that can detect unauthorized modifications to financial records and generate alerts when suspicious file upload activities occur. The remediation approach should follow the principle of least privilege, ensuring that users have only the minimum access necessary to perform their required functions while maintaining proper audit logging of all financial data modification activities.