CVE-2019-3744 in Digital Delivery
Summary
by MITRE
Dell/Alienware Digital Delivery versions prior to 4.0.41 contain a privilege escalation vulnerability. A local non-privileged malicious user could exploit a Universal Windows Platform application by manipulating the install software package feature with a race condition and a path traversal exploit in order to run a malicious executable with elevated privileges.
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Analysis
by VulDB Data Team • 11/23/2023
The vulnerability identified as CVE-2019-3744 affects Dell Alienware Digital Delivery software versions prior to 4.0.41, representing a critical privilege escalation flaw that undermines the security posture of affected systems. This vulnerability resides within the Universal Windows Platform application framework and exploits a combination of race condition and path traversal techniques to enable unauthorized privilege elevation. The flaw specifically targets the software package installation feature, creating an exploitable condition where malicious actors can manipulate the installation process to execute arbitrary code with elevated privileges. The vulnerability is particularly concerning as it requires only local access and does not demand network connectivity or complex external attack vectors, making it accessible to adversaries with minimal initial access. This type of vulnerability falls under the CWE-284 access control weakness category, specifically addressing inadequate privilege management within application installation mechanisms.
The technical exploitation of this vulnerability leverages a race condition present during the software installation process, combined with path traversal capabilities that allow attackers to manipulate file paths and execute malicious code. When the Digital Delivery application processes installation packages, it fails to properly validate or sanitize file paths, creating opportunities for attackers to inject malicious executables into the installation sequence. The race condition aspect means that there exists a temporal window where the application's path validation is insufficient, allowing an attacker to place malicious files in strategic locations before the legitimate installation process completes. This exploitation technique aligns with ATT&CK technique T1068 privilege escalation through local exploitation, specifically targeting Windows application installation processes. The vulnerability essentially allows a low-privileged user to elevate their privileges to system level by manipulating the installation package handling mechanism, bypassing normal access controls and security boundaries.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it provides attackers with complete system control capabilities once successfully exploited. An attacker with local access can leverage this vulnerability to install persistent backdoors, modify system configurations, exfiltrate sensitive data, or establish covert communication channels. The implications are particularly severe in enterprise environments where multiple users may have local access to systems running vulnerable versions of the software, potentially enabling lateral movement and persistent access to critical infrastructure. The vulnerability affects not just individual endpoints but could serve as a foothold for broader attacks within network environments, especially when combined with other exploitation techniques or when users have administrative privileges on multiple systems. Organizations running affected versions of Dell Alienware Digital Delivery face significant risk of system compromise and potential data breaches.
Mitigation strategies for CVE-2019-3744 primarily focus on immediate software updates to version 4.0.41 or later, which contain the necessary patches to address the race condition and path traversal vulnerabilities. System administrators should prioritize patch deployment across all affected systems, particularly those running vulnerable versions of the Dell Alienware Digital Delivery software. Additional defensive measures include implementing strict application whitelisting policies to prevent unauthorized executable installation, monitoring for suspicious installation activity, and conducting regular security assessments of installed software packages. The vulnerability demonstrates the importance of secure coding practices in application installation mechanisms and highlights the need for proper input validation and path sanitization. Organizations should also consider implementing automated patch management systems to ensure timely deployment of security updates and reduce the window of exposure for known vulnerabilities. Network segmentation and least privilege access controls can help limit the potential impact if exploitation occurs, while endpoint detection and response solutions can provide visibility into suspicious installation activities. The remediation approach aligns with security best practices outlined in NIST SP 800-171 and similar frameworks, emphasizing the critical nature of maintaining up-to-date software and implementing comprehensive vulnerability management processes.