CVE-2010-5242 in Sound Forge
Summary
by MITRE
Untrusted search path vulnerability in Sound Forge Pro 10.0b Build 474 allows local users to gain privileges via a Trojan horse MtxParhVegasPreview.dll file in the current working directory, as demonstrated by a directory that contains a .sfw file. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 12/13/2021
This vulnerability represents a classic untrusted search path weakness that affects Sound Forge Pro 10.0b Build 474, creating a privilege escalation vector for local attackers. The flaw stems from the application's improper handling of dynamic library loading mechanisms, where it searches for required components in the current working directory before examining system paths. This behavior creates an exploitable condition where malicious actors can place a specially crafted Trojan horse file named MtxParhVegasPreview.dll in the directory containing a .sfw file, thereby manipulating the application's execution flow.
The technical implementation of this vulnerability aligns with CWE-426, which describes the insecure loading of dynamic libraries, and specifically relates to CWE-787, concerning out-of-bounds write vulnerabilities that can occur when applications fail to properly validate library paths. The attack vector operates through a Trojan horse approach where the malicious DLL is positioned in the same directory as the target .sfw file, exploiting the application's trust in the current working directory during library resolution. This pattern of exploitation is consistent with ATT&CK technique T1059.001, which covers command and scripting interpreter usage, as attackers can leverage this vulnerability to execute arbitrary code with elevated privileges.
The operational impact of this vulnerability is significant as it allows local users to escalate their privileges without requiring administrative access or complex exploitation techniques. When a user opens a .sfw file in the compromised directory, the Sound Forge application loads the malicious MtxParhVegasPreview.dll instead of the legitimate library, potentially enabling code execution with the privileges of the target user. This creates a persistent threat vector that can be exploited across multiple user sessions and file operations, particularly in environments where users frequently open files from untrusted locations or shared directories.
Mitigation strategies should focus on implementing proper library loading practices that prioritize system directories over the current working directory, as recommended by the principle of least privilege and secure coding guidelines. Organizations should enforce application whitelisting policies to restrict which DLLs can be loaded, implement directory permissions controls to prevent unauthorized DLL placement, and consider deploying security software that monitors for suspicious library loading activities. Additionally, application developers should adopt secure coding practices that explicitly specify library paths or use absolute paths for dynamic library loading to prevent the exploitation of similar search path vulnerabilities in their software products.