CVE-2015-3621 in Enterprise Central Component
Summary
by MITRE
Untrusted search path vulnerability in SAP Enterprise Central Component (ECC) allows local users to gain privileges via a Trojan horse program.
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Analysis
by VulDB Data Team • 06/03/2022
The vulnerability identified as CVE-2015-3621 represents a critical untrusted search path issue within SAP Enterprise Central Component ECC, a foundational enterprise resource planning system widely deployed across global organizations. This flaw resides in the application's handling of system paths during program execution, creating a potential privilege escalation vector for local attackers who can manipulate the execution environment. The vulnerability specifically affects SAP ECC versions prior to 2015 ERP Support Package Stack 1, making it particularly concerning given the extensive deployment of SAP systems in enterprise environments where such vulnerabilities can have cascading effects across business-critical operations.
The technical nature of this vulnerability stems from improper validation of the search path used by the SAP ECC application when locating and executing programs. When an application searches for required executables or libraries, it typically follows a predefined order of directories in the system path. An attacker with local access can exploit this by placing a malicious Trojan horse program in a directory that is searched before the legitimate system directories. This allows the attacker to execute arbitrary code with the privileges of the SAP service account, potentially leading to full system compromise. The vulnerability is classified as a CWE-426 Untrusted Search Path, which is a well-documented weakness in software design where applications fail to properly validate or sanitize the execution environment. This weakness directly maps to the ATT&CK technique T1068, which describes the use of local privilege escalation techniques through exploitation of system vulnerabilities.
The operational impact of CVE-2015-3621 extends far beyond simple local privilege escalation, as SAP ECC systems typically operate with elevated privileges and maintain access to sensitive business data, financial records, and operational controls. A successful exploitation of this vulnerability could allow an attacker to gain access to critical enterprise resources, potentially leading to data breaches, financial fraud, or operational disruption. The vulnerability's local nature means that attackers would need initial access to the system, but once achieved, the privilege escalation could provide access to SAP-specific databases and administrative functions. Organizations running SAP ECC systems are particularly vulnerable because these applications often serve as central hubs for enterprise operations, making them attractive targets for attackers seeking persistent access to critical business infrastructure. The attack surface is further expanded when considering that SAP ECC systems frequently integrate with other enterprise applications and databases, potentially allowing lateral movement within the network.
Mitigation strategies for CVE-2015-3621 should focus on both immediate remediation and long-term architectural improvements to system security. The primary recommendation involves applying the official SAP security patches and support package stacks that address this specific vulnerability, ensuring that all SAP ECC installations are updated to versions that properly validate search paths. Organizations should also implement the principle of least privilege by ensuring that SAP service accounts operate with minimal required permissions rather than administrative privileges. Additional protective measures include conducting comprehensive security assessments of SAP system configurations, implementing strict access controls for local system accounts, and monitoring for unusual process execution patterns that might indicate exploitation attempts. Network segmentation strategies should be employed to limit lateral movement opportunities, while regular security audits of system paths and executable files can help detect potential Trojan horse placements. The vulnerability highlights the importance of maintaining up-to-date security practices and demonstrates how seemingly simple path validation issues can create significant security risks in enterprise environments, reinforcing the need for comprehensive vulnerability management programs that address both known and emerging threats in complex enterprise systems.