CVE-2016-2389 in NetWeaver
Summary
by MITRE
Directory traversal vulnerability in the Manufacturing Integration and Intelligence (xMII) component in SAP NetWeaver 7.4 allows remote attackers to read arbitrary files via unspecified vectors, aka SAP Security Note 2230978.
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Analysis
by VulDB Data Team • 08/23/2024
The vulnerability identified as CVE-2016-2389 represents a critical directory traversal flaw within SAP NetWeaver's Manufacturing Integration and Intelligence (xMII) component. This security weakness enables remote attackers to access arbitrary files on the affected system through unspecified attack vectors, potentially leading to unauthorized data access and system compromise. The vulnerability specifically affects SAP NetWeaver 7.4 installations and was documented in SAP Security Note 2230978, highlighting the severity of the issue within the SAP ecosystem.
The technical implementation of this directory traversal vulnerability stems from insufficient input validation and inadequate path sanitization within the xMII component's file handling mechanisms. Attackers can exploit this weakness by crafting malicious requests that manipulate file path parameters to navigate beyond the intended directory boundaries. This flaw typically occurs when user-supplied input is directly incorporated into file system operations without proper validation or sanitization, allowing attackers to traverse directory structures and access files that should remain restricted. The vulnerability operates at the application layer and can be exploited through web-based interfaces, making it particularly dangerous in networked environments.
The operational impact of CVE-2016-2389 extends beyond simple unauthorized file access, as it can lead to comprehensive system compromise and data breaches. Attackers exploiting this vulnerability may gain access to sensitive business data, configuration files, database credentials, and other confidential information stored within the SAP environment. The remote nature of the attack means that adversaries do not require physical access to the system or local network presence, making the vulnerability particularly attractive for widespread exploitation. Organizations running affected SAP NetWeaver installations face significant risks including intellectual property theft, financial data exposure, and potential regulatory compliance violations that could result in substantial financial penalties.
Mitigation strategies for this vulnerability should prioritize immediate patch application from SAP as outlined in the referenced security note. Organizations must also implement network segmentation to limit access to SAP systems, deploy web application firewalls to monitor and filter suspicious requests, and conduct thorough network scans to identify potentially affected systems. Additional defensive measures include implementing proper input validation controls, restricting file system permissions, and establishing robust monitoring protocols to detect anomalous file access patterns. Security teams should also consider implementing the principle of least privilege for SAP system accounts and regularly review access controls to minimize potential attack surface. This vulnerability aligns with CWE-22 Directory Traversal and can be mapped to ATT&CK technique T1083 File and Directory Discovery, emphasizing the need for comprehensive defensive measures across multiple security domains.