CVE-2018-17878 in TVIP
Summary
by MITRE • 10/27/2023
Buffer Overflow vulnerability in certain ABUS TVIP cameras allows attackers to gain control of the program via crafted string sent to sprintf() function.
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Analysis
by VulDB Data Team • 11/19/2023
The CVE-2018-17878 vulnerability represents a critical buffer overflow flaw discovered in ABUS TVIP series cameras that exposes these security devices to remote exploitation. This vulnerability specifically affects the handling of user-supplied input within the camera's firmware, where a malformed string can be processed through the sprintf() function without proper bounds checking. The flaw exists in the camera's network communication interface, which processes commands and data from remote clients, making it susceptible to attacks from unauthenticated network adversaries who can send malicious payloads directly to the device.
The technical implementation of this vulnerability stems from improper memory management within the camera's software architecture, where the sprintf() function receives input data that exceeds the allocated buffer size. This function, commonly used for string formatting operations, does not perform boundary checks on the input length, allowing attackers to overwrite adjacent memory locations. The vulnerability manifests when the camera receives specially crafted strings through its network interface, which can be transmitted via HTTP requests or other communication protocols supported by the device. The buffer overflow occurs during the processing of user-controllable parameters, enabling attackers to execute arbitrary code within the camera's operating environment.
The operational impact of this vulnerability extends beyond simple denial of service conditions, as it provides attackers with complete control over the affected camera systems. Once exploited, attackers can gain full administrative privileges, allowing them to modify camera settings, access stored video footage, manipulate recording schedules, and potentially use the compromised device as a pivot point for further attacks within the local network. The vulnerability affects multiple models within the ABUS TVIP camera line, making it particularly dangerous for organizations that deploy these devices for security monitoring. The remote nature of the exploit means that attackers do not require physical access to the devices, significantly expanding the attack surface and making the vulnerability particularly concerning for enterprise security deployments.
Mitigation strategies for CVE-2018-17878 should focus on immediate firmware updates provided by ABUS, as these patches typically address the underlying buffer overflow by implementing proper input validation and bounds checking. Network segmentation and access control measures, including firewall rules that restrict access to camera management ports, can help limit the exposure of these devices to unauthorized network traffic. Additionally, implementing network monitoring solutions that can detect anomalous traffic patterns or malformed requests to camera interfaces can provide early warning of exploitation attempts. Organizations should also consider disabling unnecessary network services and ports on affected devices, as well as conducting regular vulnerability assessments to identify any other potentially vulnerable components within their security infrastructure. This vulnerability aligns with CWE-121, which describes buffer overflow conditions in stack-based buffers, and maps to ATT&CK technique T1059 for command and scripting interpreter usage, as attackers can leverage the compromised devices for further system exploitation.