CVE-2012-4876 in Securview Wireless Internet Camera Activex Control
Summary
by MITRE
Stack-based buffer overflow in the UltraMJCam ActiveX Control in TRENDnet SecurView TV-IP121WN Wireless Internet Camera allows remote attackers to execute arbitrary code via a long string to the OpenFileDlg method.
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Analysis
by VulDB Data Team • 08/12/2024
The vulnerability identified as CVE-2012-4876 represents a critical stack-based buffer overflow within the UltraMJCam ActiveX control component of TRENDnet SecurView TV-IP121WN Wireless Internet Camera devices. This flaw exists in the OpenFileDlg method implementation, creating a pathway for remote code execution that can be exploited by malicious actors without requiring authentication or physical access to the device. The vulnerability stems from insufficient input validation within the ActiveX control's method handling, specifically failing to properly bounds-check user-supplied data before copying it to a fixed-size stack buffer.
The technical nature of this vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent stack memory locations. The flaw manifests when a remote attacker crafts a malicious string input exceeding the allocated buffer size in the OpenFileDlg method, causing a stack overflow that can be leveraged to overwrite return addresses and execute arbitrary code with the privileges of the affected application process. This type of vulnerability is particularly dangerous in ActiveX controls because these components typically run with elevated privileges in web browsers, amplifying the potential impact of successful exploitation.
From an operational perspective, this vulnerability creates significant risks for network security and device integrity within enterprise and home environments that utilize TRENDnet wireless internet cameras. The remote exploitation capability means that attackers can compromise devices from anywhere on the internet without requiring physical access or local network presence. This vulnerability affects the camera's web interface functionality and can potentially lead to complete device compromise, allowing attackers to install persistent backdoors, access stored video feeds, or use the device as a pivot point for further network attacks. The vulnerability also represents a potential entry vector for broader network infiltration, as compromised cameras often serve as stepping stones for attackers seeking to establish persistent presence within larger networks.
Mitigation strategies for CVE-2012-4876 should prioritize immediate remediation through firmware updates provided by TRENDnet, as the vendor likely released patches addressing the buffer overflow condition. Network administrators should implement strict firewall rules blocking access to the camera's web interface from untrusted networks while ensuring that any exposed camera services are properly segmented within the network infrastructure. Additionally, browser security configurations should be adjusted to disable ActiveX controls or restrict their execution to trusted domains only. The vulnerability demonstrates the importance of proper input validation and bounds checking in software development, particularly for components that handle user-provided data in web environments. Security monitoring should include detection of unusual network traffic patterns that might indicate exploitation attempts, and organizations should consider implementing network segmentation and access controls to limit the potential impact of device compromise. This vulnerability also highlights the need for regular security assessments of embedded network devices and the importance of maintaining updated firmware to protect against known vulnerabilities in networked security equipment.