CVE-2022-0192 in PCManager
Summary
by MITRE • 04/23/2022
A DLL search path vulnerability was reported in Lenovo PCManager prior to version 4.0.40.2175 that could allow privilege escalation.
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Analysis
by VulDB Data Team • 04/29/2022
This vulnerability resides within Lenovo PCManager software, a comprehensive system management tool that provides various hardware and software configuration capabilities for lenovo devices. The issue manifests as a dll search path vulnerability that allows malicious actors to execute arbitrary code with elevated privileges. The vulnerability specifically affects versions prior to 4.0.40.2175, indicating that lenovo had not yet addressed this particular security flaw in their software distribution. The flaw stems from the application's improper handling of dynamic link library loading sequences, creating opportunities for attackers to manipulate the system's library resolution process. When the vulnerable application executes, it searches for required dll files in a specific order that can be exploited by placing malicious libraries in directories that are searched before the legitimate system directories. This particular vulnerability is classified under the common weakness enumeration as a weakness in the library loading mechanism, specifically related to improper search path handling. The attack vector typically involves placing a malicious dll file in a location that will be searched before the legitimate system directories, allowing the application to load the malicious code instead of the intended library. This flaw enables privilege escalation because the application often runs with elevated permissions, allowing the malicious code to execute with the same elevated privileges as the legitimate application. The operational impact of this vulnerability is significant as it provides attackers with a pathway to gain system-level access without requiring additional exploitation techniques. Attackers can leverage this vulnerability to install persistent backdoors, modify system configurations, or extract sensitive information from the compromised system. The attack technique aligns with the attack pattern of dll side loading which is categorized under the attack tactic of privilege escalation in the attack and classification taxonomy. Organizations running vulnerable versions of Lenovo PCManager are particularly at risk as this vulnerability can be exploited remotely or locally depending on how the application is deployed. The vulnerability represents a critical security gap that undermines the integrity of the system's application loading mechanism, potentially allowing full system compromise. The fix implemented in version 4.0.40.2175 likely involved correcting the dll search order to prioritize system directories and implementing proper validation of library sources. System administrators should immediately update to the patched version and conduct thorough security assessments to identify any potential exploitation attempts. The vulnerability highlights the importance of proper application security practices and the need for regular security updates to maintain system integrity against evolving threats. Organizations should implement comprehensive patch management procedures to ensure all system management tools are kept up to date with the latest security fixes.
The vulnerability's impact extends beyond simple privilege escalation as it represents a fundamental flaw in how the application handles external dependencies. The improper search path implementation creates a persistent threat vector that remains active until the software is properly updated. This type of vulnerability is particularly dangerous because it can be exploited through various attack vectors including social engineering, where attackers might convince users to execute malicious payloads that take advantage of the flawed library loading process. The weakness in the library loading mechanism directly relates to the common weakness enumeration category of improper library loading which is a well-documented threat in enterprise security environments. From a defensive standpoint, this vulnerability underscores the need for robust application whitelisting policies and strict monitoring of system library loading activities. Security professionals should monitor for unusual dll loading patterns that might indicate exploitation attempts. The vulnerability's presence in a system management tool like PCManager makes it particularly attractive to attackers as it provides access to critical system functions and potentially sensitive hardware configurations. The attack pattern follows established methodologies from the attack and classification taxonomy where attackers exploit the predictable nature of library loading sequences to gain unauthorized system access. Organizations should consider implementing additional security controls such as application control solutions and endpoint detection and response systems to monitor for potential exploitation attempts. The vulnerability demonstrates the critical importance of secure coding practices and proper library management in system software development. Regular security audits and penetration testing should include evaluation of application search path mechanisms to identify similar vulnerabilities in other software components. The remediation process requires not only updating the vulnerable software but also ensuring that all similar applications within the enterprise environment are assessed for comparable flaws. This vulnerability serves as a reminder of the persistent threat posed by legacy software components and the necessity of maintaining up-to-date security practices across all system management tools.