CVE-2010-5260 in Argin All Dvd Ripper
Summary
by MITRE
Untrusted search path vulnerability in Agrin All DVD Ripper 4.0 allows local users to gain privileges via a Trojan horse wnaspi32.dll file in the current working directory, as demonstrated by a directory that contains a .ifo file. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 12/13/2021
The vulnerability identified as CVE-2010-5260 represents an untrusted search path issue affecting Agrin All DVD Ripper version 4.0, which constitutes a significant security weakness in the software's dynamic link library loading mechanism. This flaw enables local attackers to escalate privileges by exploiting the application's failure to properly validate the source of dynamically loaded libraries, creating a pathway for malicious code execution within the context of the target system. The vulnerability specifically manifests when the application searches for the wnaspi32.dll file in the current working directory, which is a common practice in Windows applications that rely on dynamic loading for certain functionalities. The attack vector is demonstrated through the presence of a malicious Trojan horse wnaspi32.dll file within the directory containing a .ifo file, which is a standard DVD file format that the application processes during normal operation. This particular attack scenario illustrates how seemingly benign file processing operations can be leveraged to introduce privilege escalation capabilities.
The technical implementation of this vulnerability stems from improper library loading practices within the Agrin All DVD Ripper application, which follows a predictable search order that prioritizes the current working directory over system directories. This behavior aligns with CWE-426, which addresses the insecure loading of dynamic libraries, and represents a classic example of a path traversal or search path manipulation vulnerability. When the application encounters a .ifo file during processing, it triggers a sequence that leads to the loading of the wnaspi32.dll library, but due to the insecure search path implementation, it will load a malicious version from the current directory rather than the legitimate system version. The vulnerability operates under the principle that applications should not trust files in the current working directory without proper validation, as this creates opportunities for attackers to place malicious payloads in locations where the application expects to find legitimate components.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass potential system compromise and unauthorized code execution within the context of the user running the application. Attackers can leverage this weakness to execute arbitrary code with the privileges of the targeted user, potentially leading to complete system compromise if the user has elevated permissions. The vulnerability is particularly concerning because it requires minimal user interaction to exploit, as the malicious wnaspi32.dll file can be placed in the same directory as the .ifo file that triggers the application's library loading behavior. This makes the vulnerability suitable for various attack scenarios including social engineering campaigns, where attackers might place malicious files on shared drives or in directories where users frequently process DVD content, and the application's normal operation inadvertently loads the malicious library. The attack can be classified under ATT&CK technique T1059 for executing malicious code and T1068 for privilege escalation, making it a multi-faceted threat that can be leveraged for broader compromise.
Mitigation strategies for CVE-2010-5260 should focus on both immediate remediation and long-term architectural improvements to prevent similar vulnerabilities. The most effective immediate solution involves updating to a patched version of Agrin All DVD Ripper that implements secure library loading practices, ensuring that dynamic libraries are loaded from trusted system directories rather than the current working directory. Organizations should also implement application whitelisting policies that restrict the execution of unauthorized DLL files, particularly in directories where user-generated content is processed. System administrators should consider implementing least privilege principles and avoiding execution of potentially vulnerable applications with elevated privileges. The vulnerability also highlights the importance of secure coding practices and proper library loading mechanisms, which should be enforced through security development lifecycle processes and code reviews that specifically address CWE-426 and similar path manipulation vulnerabilities. Additionally, monitoring for suspicious DLL loading patterns and implementing behavioral analysis tools can help detect exploitation attempts before they result in successful privilege escalation.