CVE-2022-36403 in Device Software Manager
Summary
by MITRE • 09/08/2022
Untrusted search path vulnerability in the installer of Device Software Manager prior to Ver.2.20.3.0 allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.
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Analysis
by VulDB Data Team • 10/14/2022
The vulnerability identified as CVE-2022-36403 represents a critical untrusted search path weakness within the installer component of Device Software Manager software versions prior to 220.3.0. This flaw resides in the installer's dynamic link library loading mechanism, where the application fails to properly validate or sanitize the search paths used to locate required libraries during the installation process. The vulnerability manifests when the installer attempts to load DLL files from directories that are not properly secured or validated, creating an opportunity for malicious actors to place crafted Trojan horse DLLs in strategic locations within the system's search path.
The technical implementation of this vulnerability aligns with CWE-426, which describes untrusted search path conditions where applications execute or load code from directories that are not properly validated. The installer component of Device Software Manager demonstrates insecure programming practices by not implementing proper path validation or by relying on system PATH variables that may be manipulated by adversaries. When the installer processes the installation sequence, it traverses a series of directories to locate required libraries, and if any of these directories contain malicious DLL files with the same names as legitimate system libraries, the installer will load and execute the malicious code with the privileges of the user running the installer.
This vulnerability presents significant operational impact as it enables privilege escalation attacks through a relatively simple exploitation technique. The attacker needs only to place a malicious DLL file in a directory that appears earlier in the system's search path than the legitimate library locations. The execution of this attack requires minimal technical expertise and can be accomplished through basic file manipulation techniques. The installed software typically runs with elevated privileges during installation, which means that successful exploitation can result in full system compromise or privilege escalation to SYSTEM level access. The vulnerability is particularly concerning because it operates at the installation phase, which is a time when users typically grant elevated permissions to software installations, making the attack surface more accessible.
The attack vector for this vulnerability follows patterns consistent with ATT&CK technique T1068, which covers local privilege escalation through the exploitation of system vulnerabilities. The installer's behavior creates a window of opportunity where malicious code can be executed with elevated privileges, potentially allowing attackers to establish persistent access, escalate privileges beyond the initial installation context, or manipulate system configurations. The vulnerability's impact is amplified by the fact that it affects the installation process itself, meaning that any system with the vulnerable software installed is potentially at risk of exploitation. Organizations should consider implementing strict directory permissions and monitoring for unauthorized DLL placements in system directories, particularly those that are part of the default search path. Additionally, the use of application whitelisting solutions and regular vulnerability assessments of installed software components can help detect and prevent exploitation attempts. The remediation approach requires updating to Device Software Manager version 2.20.3.0 or later, which incorporates proper path validation and secure library loading mechanisms that prevent the loading of untrusted DLLs from arbitrary locations.