CVE-2023-39254 in DUP Framework
Summary
by MITRE • 03/01/2024
Dell Update Package (DUP), Versions prior to 4.9.10 contain an Uncontrolled Search Path vulnerability. A malicious user with local access to the system could potentially exploit this vulnerability to run arbitrary code as admin.
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Analysis
by VulDB Data Team • 04/18/2025
The Dell Update Package (DUP) vulnerability CVE-2023-39254 represents a critical uncontrolled search path flaw that affects versions prior to 4.9.10. This vulnerability resides within Dell's system update framework, which is designed to facilitate automated software updates and system maintenance operations. The flaw manifests when the DUP utility fails to properly validate or control the search paths used during the update process, creating opportunities for privilege escalation attacks. The vulnerability specifically targets the local system execution environment where the update package processes are initiated, making it particularly dangerous in environments where local user access is possible. Attackers can exploit this weakness by manipulating the search path to load malicious code in place of legitimate update components, effectively bypassing normal security controls.
The technical exploitation of this vulnerability follows a classic uncontrolled search path attack pattern, which aligns with CWE-428 - Uncontrolled Search Path Element. The flaw occurs when the DUP utility does not properly sanitize the environment variables or directory paths used during update execution, allowing attackers to place malicious binaries in directories that are searched before legitimate system directories. This vulnerability operates at the system level where the DUP processes execute with administrative privileges, making the potential impact severe. When a local attacker successfully manipulates the search path, the system will execute the malicious code with elevated privileges, effectively granting the attacker administrative control over the affected system.
The operational impact of CVE-2023-39254 extends beyond simple privilege escalation as it provides attackers with a persistent foothold in the system that can be leveraged for further compromise. The vulnerability affects Dell systems that rely on the DUP framework for automated updates, which includes enterprise workstations, servers, and managed devices. Once exploited, the attacker can maintain persistent access, escalate privileges further, and potentially move laterally within the network. The vulnerability is particularly concerning because it requires only local access to exploit, meaning that attackers who have gained initial access through other means can use this vulnerability to elevate their privileges without additional attack vectors. This weakness also impacts the integrity of the system update process, potentially allowing attackers to install malicious software that appears legitimate to the system's update mechanism.
Mitigation strategies for CVE-2023-39254 primarily focus on updating to Dell DUP version 4.9.10 or later, which contains patches addressing the uncontrolled search path vulnerability. Organizations should implement strict access controls to limit local user privileges and ensure that only authorized personnel have access to systems running vulnerable DUP versions. The vulnerability also highlights the importance of proper environment variable management and path validation in system update processes, which aligns with ATT&CK technique T1068 - Local Privilege Escalation. Security teams should conduct thorough vulnerability assessments to identify systems running vulnerable DUP versions and implement network monitoring to detect potential exploitation attempts. Additionally, organizations should consider implementing application whitelisting policies that restrict the execution of unauthorized binaries, particularly in directories that may be manipulated through search path vulnerabilities. Regular patch management procedures should be enforced to ensure timely deployment of security updates, as this vulnerability demonstrates the critical importance of maintaining current system software versions.