CVE-2007-2564 in Digital Music Mentor
Summary
by MITRE
Multiple stack-based buffer overflows in the Sienzo Digital Music Mentor (DMM) 2.6.0.4 ActiveX control (DSKernel2.dll) allow remote attackers to execute arbitrary code via a long argument to the (1) LockModules or (2) UnlockModule function.
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Analysis
by VulDB Data Team • 10/14/2017
The vulnerability identified as CVE-2007-2564 represents a critical stack-based buffer overflow flaw within the Sienzo Digital Music Mentor 2.6.0.4 ActiveX control, specifically in the DSKernel2.dll component. This vulnerability exists in the implementation of two distinct functions: LockModules and UnlockModule, which are exposed through the ActiveX interface. The flaw arises from inadequate input validation and bounds checking within these functions, creating opportunities for attackers to manipulate memory structures through crafted arguments that exceed allocated buffer sizes. The vulnerability is particularly concerning because it affects a widely deployed ActiveX control that could be executed in web browser contexts, making it exploitable through web-based attack vectors.
The technical implementation of this vulnerability stems from improper handling of user-supplied data within the ActiveX control's function interfaces. When the LockModules or UnlockModule functions receive arguments exceeding the predefined buffer capacity, the excess data overflows into adjacent memory locations, potentially overwriting critical program state information including return addresses and stack canaries. This type of vulnerability maps directly to CWE-121 Stack-based Buffer Overflow, which is classified under the Common Weakness Enumeration framework as a fundamental flaw in memory management practices. The overflow behavior allows attackers to manipulate the program execution flow by controlling the overwritten return addresses, effectively enabling arbitrary code execution within the context of the user's privileges.
The operational impact of this vulnerability extends beyond simple code execution, as it represents a significant threat vector for attackers seeking to compromise systems through web-based attacks. Since ActiveX controls are commonly executed in Internet Explorer and other browsers that support ActiveX technology, an attacker could deliver malicious content through web pages that trigger the vulnerable functions when users visit compromised websites. This attack vector aligns with ATT&CK technique T1203, which describes exploitation of vulnerabilities in software components through web-based delivery mechanisms. The vulnerability also relates to T1068, which involves the exploitation of local vulnerabilities to gain elevated privileges, as successful exploitation would allow attackers to execute code with the privileges of the victim user.
Mitigation strategies for CVE-2007-2564 should prioritize immediate remediation through software updates and patches provided by the vendor, though given the age of this vulnerability, such patches may no longer be available. System administrators should implement browser security measures including ActiveX control restrictions, browser security zones, and enhanced sandboxing mechanisms to prevent automatic execution of potentially malicious ActiveX components. Network-based protections such as web application firewalls and intrusion detection systems can help detect and block exploitation attempts targeting this specific vulnerability. Additionally, users should be educated about the risks of visiting untrusted websites and the importance of keeping software updated, as this vulnerability demonstrates the critical need for proper input validation and memory management practices in software development. Organizations should consider implementing application whitelisting policies to prevent execution of untrusted ActiveX controls and regularly audit their systems for outdated ActiveX components that may pose similar risks. The vulnerability also highlights the importance of following secure coding practices and conducting thorough code reviews to prevent similar buffer overflow conditions in software development lifecycle processes.