CVE-2017-5238 in EV-07S
Summary
by MITRE
Due to a lack of bounds checking, several input configuration fields for the Eview EV-07S GPS Tracker will overflow data stored in one variable to another, overwriting the data of another field.
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Analysis
by VulDB Data Team • 09/14/2020
The CVE-2017-5238 vulnerability affects the Eview EV-07S GPS tracker device, representing a classic buffer overflow condition that arises from insufficient input validation and bounds checking mechanisms within the device's firmware. This vulnerability specifically targets the configuration input fields that control various operational parameters of the GPS tracking device, creating a scenario where maliciously crafted input data can cause unintended memory corruption. The flaw exists in the device's handling of user-supplied data during configuration processes, where the absence of proper input sanitization allows data to spill beyond its allocated memory boundaries into adjacent variables.
This vulnerability manifests as a memory corruption issue that directly impacts the device's operational integrity and can potentially lead to arbitrary code execution or complete device compromise. The buffer overflow occurs when configuration parameters exceed their designated storage limits, causing data to overwrite adjacent memory locations that contain other critical configuration variables. The affected device operates within the Internet of Things ecosystem, specifically targeting mobile tracking applications where device reliability and data integrity are paramount for security and operational effectiveness.
The operational impact of this vulnerability extends beyond simple device malfunction, as it creates potential attack vectors for adversaries seeking to compromise GPS tracking infrastructure. Attackers could exploit this weakness to manipulate device settings, potentially disabling tracking functions, altering location reporting parameters, or even gaining unauthorized access to the device's control mechanisms. The vulnerability particularly concerns organizations relying on fleet management, asset tracking, or personal safety monitoring systems where these devices serve as critical operational components. The compromised device could be used to conduct surveillance operations, deny service to legitimate users, or provide attackers with unauthorized access to location data.
Mitigation strategies for CVE-2017-5238 should prioritize firmware updates from the vendor, as this represents a fundamental software design flaw requiring code-level corrections. Organizations must implement network segmentation to isolate affected devices from critical infrastructure and establish monitoring protocols to detect anomalous behavior patterns that may indicate exploitation attempts. The vulnerability aligns with CWE-121, which categorizes stack-based buffer overflow conditions, and demonstrates characteristics consistent with ATT&CK technique T1059.007 for command and control through application layer protocols. Security teams should also consider implementing input validation at network boundaries and conducting regular vulnerability assessments of IoT device fleets to identify similar weaknesses in other connected systems.