CVE-2020-8469 in Password Manager
Summary
by MITRE
Trend Micro Password Manager for Windows version 5.0 is affected by a DLL hijacking vulnerability would could potentially allow an attacker privleged escalation.
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Analysis
by VulDB Data Team • 05/11/2025
The vulnerability identified as CVE-2020-8469 affects Trend Micro Password Manager for Windows version 5.0 and represents a critical DLL hijacking flaw that could enable privilege escalation attacks. This vulnerability stems from improper dynamic link library loading mechanisms within the password manager application, creating opportunities for malicious actors to execute arbitrary code with elevated privileges. The flaw exists in how the application resolves and loads dynamic link libraries, particularly when the application is launched with elevated permissions, making it a significant target for attackers seeking to escalate their access level within the compromised system.
The technical implementation of this vulnerability involves the application's failure to properly specify the full path of required DLL files during the loading process. When Trend Micro Password Manager executes with administrator privileges, it may inadvertently load malicious DLLs from directories that are not properly secured or validated. This behavior aligns with CWE-426, which describes the insecure loading of dynamic libraries, and represents a classic example of how applications can be tricked into executing unintended code through manipulation of the dynamic link library search order. Attackers can exploit this by placing a malicious DLL with the same name as a legitimate dependency in a directory that gets searched before the legitimate library location, effectively hijacking the application's execution flow.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it could potentially allow attackers to gain full system control through the password manager application. Since password managers typically handle sensitive authentication data and often run with elevated privileges, successful exploitation could provide attackers with access to all stored credentials, potentially compromising multiple accounts and systems. The vulnerability's exploitation requires minimal privileges to initially place the malicious DLL in the appropriate directory, making it particularly dangerous in environments where users may have standard user accounts but are frequently prompted to run administrative tools. This scenario creates a perfect storm for privilege escalation attacks that align with ATT&CK technique T1068, which covers privilege escalation through the exploitation of dynamic link library loading vulnerabilities.
Mitigation strategies for CVE-2020-8469 should focus on both immediate remediation and long-term architectural improvements to prevent similar issues in the future. The most effective immediate solution involves installing the vendor's official patch or update that addresses the DLL loading behavior, which typically includes implementing proper full path resolution for all dynamic link libraries. Organizations should also implement application whitelisting policies that restrict which DLLs can be loaded by the password manager application, combined with proper directory permissions that prevent unauthorized users from placing files in critical application directories. Additionally, monitoring and alerting systems should be configured to detect unusual DLL loading patterns, particularly when applications execute with elevated privileges, as this behavior could indicate exploitation attempts. The vulnerability highlights the importance of following secure coding practices such as those outlined in the OWASP Secure Coding Guidelines, specifically regarding dynamic library loading security considerations. Network segmentation and least privilege access controls should also be enforced to limit the potential impact of successful exploitation, as attackers who gain access through this vulnerability could potentially use the compromised password manager as a foothold for further reconnaissance and lateral movement within the network.