CVE-2016-4526 in DataManagerPro
Summary
by MITRE
ABB DataManagerPro 1.x before 1.7.1 allows local users to gain privileges by replacing a DLL file in the package directory.
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Analysis
by VulDB Data Team • 04/19/2019
The vulnerability identified as CVE-2016-4526 affects ABB DataManagerPro version 1.x prior to 1.7.1, presenting a significant local privilege escalation risk through dynamic link library hijacking. This flaw resides in the software's package directory handling mechanism where the application fails to properly validate or secure the dynamic link library files it loads during execution. The vulnerability stems from the application's insecure loading behavior that does not implement proper file path validation or digital signature verification before executing third-party DLL components.
This security weakness creates an opportunity for local attackers to escalate their privileges by substituting legitimate DLL files with malicious counterparts within the application's package directory. The vulnerability operates under the principle of DLL hijacking, which is categorized under CWE-426 as an Untrusted Search Path vulnerability. Attackers can exploit this by placing a specially crafted DLL file in the package directory, which the application will then execute with elevated privileges, potentially leading to full system compromise. The flaw represents a classic case of insufficient privilege separation and improper access control mechanisms within the application's runtime environment.
The operational impact of this vulnerability extends beyond simple privilege escalation as it can enable attackers to execute arbitrary code with system-level privileges, potentially allowing full system compromise and data exfiltration. The attack vector is particularly concerning because it requires minimal user interaction beyond having local access to the system, making it a persistent threat in environments where local accounts are not properly secured. This vulnerability affects industrial control systems and data management platforms where the software operates with elevated privileges, creating a critical security gap that could be exploited to disrupt operations or gain unauthorized access to sensitive industrial data.
Mitigation strategies for CVE-2016-4526 should focus on implementing proper file integrity controls and secure coding practices. Organizations should ensure that all affected versions of ABB DataManagerPro are updated to 1.7.1 or later, which includes proper DLL loading validation. System administrators should implement file permission controls to restrict write access to the package directories and employ application whitelisting solutions to prevent unauthorized DLL execution. The vulnerability aligns with ATT&CK technique T1068 which covers local privilege escalation through DLL side-loading, making it essential to implement proper process monitoring and file integrity checking mechanisms. Additionally, implementing least privilege principles and regular security assessments of industrial control systems can help prevent exploitation of similar vulnerabilities in the broader attack surface.