CVE-2017-5147 in DAQFactory
Summary
by MITRE
An Uncontrolled Search Path Element issue was discovered in AzeoTech DAQFactory versions prior to 17.1. An uncontrolled search path element vulnerability has been identified, which may execute malicious DLL files that have been placed within the search path.
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Analysis
by VulDB Data Team • 01/11/2021
The vulnerability identified as CVE-2017-5147 represents a critical uncontrolled search path element flaw within AzeoTech DAQFactory software versions prior to 17.1. This type of vulnerability falls under the broader category of CWE-427 Uncontrolled Search Path Element, which specifically addresses situations where applications search for files in directories that are not properly controlled or validated. The issue manifests when the application fails to properly validate or restrict the search paths used to locate dynamic link libraries and other executable components, creating an exploitable condition that adversaries can leverage to execute malicious code.
The technical flaw in DAQFactory stems from its improper handling of library search paths during runtime execution. When the application loads dynamic link libraries, it does not adequately sanitize or restrict the directories from which these libraries are loaded, allowing attackers to place malicious DLL files in locations that the application will automatically search. This vulnerability operates on the principle that the application's search order is not properly secured, enabling attackers to position their malicious payloads in directories that are searched before legitimate system directories, thereby achieving arbitrary code execution.
The operational impact of this vulnerability is significant as it provides attackers with a straightforward path to compromise systems running affected versions of DAQFactory. An attacker who can influence the environment where DAQFactory operates can simply place a malicious DLL file in a directory that the application searches, and when the application loads this DLL, the malicious code executes with the privileges of the DAQFactory process. This scenario can lead to complete system compromise, data exfiltration, and persistent access within the network environment. The vulnerability is particularly dangerous because it can be exploited without requiring elevated privileges beyond those needed to place files in the search path, making it accessible to a wide range of threat actors.
Organizations should immediately upgrade to DAQFactory version 17.1 or later to remediate this vulnerability, as this release contains the necessary patches to properly control search paths and prevent uncontrolled library loading. Additionally, system administrators should implement strict file system permissions and monitoring to prevent unauthorized DLL placement in directories that may be searched by the application. The mitigation strategy aligns with ATT&CK technique T1059.001 Command and Scripting Interpreter and T1546.009 System Services for persistence, as attackers could use this vulnerability to establish footholds and maintain access. Security teams should also consider implementing application whitelisting policies and monitoring for suspicious DLL loading activities to detect potential exploitation attempts.