CVE-2007-6327 in AVSMJPEGFILE.DLL
Summary
by MITRE
Buffer overflow in a certain ActiveX control in Online Media Technologies AVSMJPEGFILE.DLL 1.1.1.102 allows remote attackers to execute arbitrary code via a long first argument to the CreateStill method.
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Analysis
by VulDB Data Team • 10/12/2024
The vulnerability identified as CVE-2007-6327 represents a critical buffer overflow flaw within the AVSMJPEGFILE.DLL ActiveX control version 1.1.1.102 developed by Online Media Technologies. This specific vulnerability manifests in the CreateStill method where the application fails to properly validate the length of the first argument passed to the function, creating an exploitable condition that can be leveraged by remote attackers to gain arbitrary code execution privileges. The flaw exists at the boundary between user-supplied input and the controlled memory allocation within the ActiveX component, making it particularly dangerous in web browser environments where ActiveX controls are commonly executed.
The technical implementation of this vulnerability stems from improper input validation mechanisms within the AVSMJPEGFILE.DLL control, which operates under the Common Weakness Enumeration framework as CWE-121, classified as "Stack-based Buffer Overflow." When an attacker supplies an excessively long string as the first argument to the CreateStill method, the control attempts to copy this data into a fixed-size buffer without adequate bounds checking, resulting in memory corruption that can overwrite adjacent memory locations including return addresses and executable code segments. This type of vulnerability directly aligns with the ATT&CK framework's T1059.007 technique for "Command and Scripting Interpreter: PowerShell" and T1203 technique for "Exploitation for Client Execution" as it enables remote code execution through client-side exploitation.
The operational impact of this vulnerability extends beyond simple code execution to encompass full system compromise when exploited successfully. Attackers can leverage this buffer overflow to inject malicious payloads that execute with the privileges of the affected application, typically resulting in system takeover or persistence mechanisms. The vulnerability affects systems running the specific version of the ActiveX control, particularly those in environments where the control is registered and executed, such as Windows systems with Internet Explorer configured to execute ActiveX controls. The remote nature of the attack means that exploitation can occur without requiring local system access, making it particularly dangerous for enterprise environments where users may unknowingly interact with malicious web content.
Mitigation strategies for CVE-2007-6327 should prioritize immediate remediation through software updates from Online Media Technologies, as the vendor would have released patches addressing the buffer overflow condition in subsequent versions of the AVSMJPEGFILE.DLL component. System administrators should implement strict ActiveX control restrictions through group policies and browser security settings, disabling or removing the vulnerable control from systems where it is not absolutely necessary. Network-level defenses should include web application firewalls and content filtering solutions that can detect and block requests attempting to exploit this specific vulnerability pattern. Additionally, regular vulnerability assessments and penetration testing should be conducted to identify other potentially vulnerable ActiveX controls within the enterprise environment, while user education programs should emphasize the dangers of interacting with untrusted web content that may trigger such client-side exploits. The remediation process should also include monitoring for indicators of compromise related to successful exploitation attempts and maintaining detailed logs of ActiveX control usage for forensic analysis purposes.