CVE-2017-10909 in Music Center for PC
Summary
by MITRE
Untrusted search path vulnerability in Music Center for PC version 1.0.01 and earlier allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.
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Analysis
by VulDB Data Team • 12/17/2019
The vulnerability identified as CVE-2017-10909 represents a critical untrusted search path issue affecting Music Center for PC version 1.0.01 and earlier implementations. This flaw resides within the software's dynamic link library loading mechanism, where the application fails to properly validate the source and authenticity of dynamically loaded components. The vulnerability stems from the application's insecure handling of library paths during runtime execution, creating an opportunity for malicious actors to inject unauthorized code through carefully placed malicious DLL files. The issue manifests when the application searches for required libraries in directories that are not properly secured or validated, allowing attackers to place Trojan horse DLLs in locations that the application will automatically load and execute without proper verification. This type of vulnerability directly maps to CWE-426, which describes the insecure loading of dynamic libraries, and aligns with ATT&CK technique T1059.001 for execution through dynamic-link libraries. The impact of this vulnerability extends beyond simple privilege escalation to encompass potential system compromise, as the loaded malicious code can execute with the privileges of the targeted application.
The operational consequences of CVE-2017-10909 are significant and multifaceted, particularly in enterprise environments where Music Center for PC may be deployed across multiple systems. Attackers can exploit this vulnerability by placing malicious DLL files in directories that the application searches, such as the current working directory or other locations in the system path. Once executed, the malicious code can perform various malicious activities including data exfiltration, system reconnaissance, privilege escalation to administrative levels, or establishing persistent backdoors. The vulnerability is particularly dangerous because it leverages the trust model inherent in legitimate software execution, making detection more challenging for security monitoring systems. The attack vector typically involves social engineering or compromise of a system where the vulnerable application is installed, followed by placement of the malicious DLL in an appropriate location. This creates a persistent threat that can survive application restarts and system reboots, especially if the attacker maintains access to the compromised system. The vulnerability's exploitation requires minimal technical expertise, making it attractive to threat actors across different skill levels.
Mitigation strategies for CVE-2017-10909 must address both immediate remediation and long-term security hardening measures. The primary recommendation involves applying the vendor-provided security patches and updates that correct the untrusted search path implementation in Music Center for PC. Organizations should implement strict file system permissions and access controls to prevent unauthorized DLL placement in application directories. The principle of least privilege should be enforced, ensuring that application processes run with minimal required permissions and cannot write to critical directories. Security configurations should include disabling unnecessary search paths and implementing proper DLL loading mechanisms that verify the authenticity and integrity of loaded libraries through digital signatures or other validation methods. Network segmentation and monitoring solutions should be deployed to detect anomalous DLL loading behaviors and unauthorized file modifications. System administrators should conduct regular security audits to identify and remediate any insecure configurations. The implementation of application whitelisting solutions can provide additional protection by restricting execution of unauthorized DLL files. Organizations should also consider implementing behavioral monitoring to detect suspicious patterns in library loading activities. Compliance with security standards such as those outlined in the NIST Cybersecurity Framework and ISO 27001 can provide structured approaches to addressing this vulnerability and similar security weaknesses in software applications.