CVE-2022-0129 in TechCheck
Summary
by MITRE • 01/11/2022
Uncontrolled search path element vulnerability in McAfee TechCheck prior to 4.0.0.2 allows a local administrator to load their own Dynamic Link Library (DLL) gaining elevation of privileges to system user. This was achieved through placing the malicious DLL in the same directory that the process was run from.
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Analysis
by VulDB Data Team • 01/13/2022
The vulnerability identified as CVE-2022-0129 represents a critical uncontrolled search path element flaw within McAfee TechCheck software versions prior to 4.0.0.2. This weakness falls under the CWE-427 category of Uncontrolled Search Path Element, which occurs when a program searches for files in directories that can be manipulated by attackers. The vulnerability specifically affects McAfee TechCheck, a tool designed for security analysis and threat detection, creating a dangerous attack surface for local administrators who possess elevated privileges. The flaw enables a local attacker to escalate their privileges to system level by exploiting the insecure dynamic link library loading mechanism.
The technical exploitation of this vulnerability occurs through a well-documented attack pattern where an attacker places a malicious dynamic link library file in the same directory as the vulnerable process. When the process executes, it loads the attacker-controlled DLL instead of the legitimate one due to the insecure search path implementation. This occurs because the application does not properly validate or sanitize the search path, allowing arbitrary code execution with the privileges of the target process. The vulnerability is particularly dangerous because it requires minimal privileges to exploit, as the attacker only needs local administrator access to place the malicious DLL in the appropriate directory. The process typically loads DLLs in a predictable order, and since the attacker controls the local directory, they can ensure their malicious library is loaded first.
The operational impact of CVE-2022-0129 extends beyond simple privilege escalation, creating significant security implications for organizations relying on McAfee TechCheck for threat analysis. A successful exploitation allows attackers to gain system-level privileges, which could enable them to access sensitive system files, modify security configurations, or establish persistent access to the compromised system. This vulnerability is particularly concerning in enterprise environments where local administrator accounts are commonly used and may have broader network access. The attack vector is relatively simple and does not require sophisticated techniques, making it accessible to attackers with basic privileges who can leverage this flaw to gain higher-level access to critical systems. The vulnerability essentially creates a backdoor mechanism that bypasses normal security controls and authentication mechanisms.
Organizations should immediately implement mitigation strategies including updating to McAfee TechCheck version 4.0.0.2 or later, which contains the necessary patches to address this vulnerability. System administrators should also implement strict directory permissions and monitoring to prevent unauthorized DLL placement in critical directories. The principle of least privilege should be enforced, limiting local administrator access to only necessary systems and processes. Additionally, security monitoring should include detection of unusual DLL loading patterns and directory modifications in system directories. From an ATT&CK framework perspective, this vulnerability maps to techniques such as privilege escalation through DLL hijacking and persistence mechanisms, making it a significant concern for security operations teams. Regular vulnerability assessments and patch management processes should include verification of McAfee TechCheck installations to ensure that systems remain protected against this and similar vulnerabilities.