CVE-2018-4029 in A1 Dashcam
Summary
by MITRE
An exploitable code execution vulnerability exists in the HTTP request-parsing function of the NT9665X Chipset firmware running on the Anker Roav A1 Dashcam, version RoavA1SWV1.9. A specially crafted packet can cause an unlimited and arbitrary write to memory, resulting in code execution.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 09/17/2023
The vulnerability identified as CVE-2018-4029 represents a critical code execution flaw within the NT9665X Chipset firmware of the Anker Roav A1 Dashcam device. This vulnerability specifically resides in the HTTP request-parsing function, which serves as a fundamental component for network communication and device management. The affected firmware version RoavA1SWV1.9 demonstrates a failure in proper input validation and memory management during HTTP request processing, creating a pathway for malicious actors to exploit the device's network capabilities. The vulnerability's classification as exploitable indicates that attackers can reliably leverage this flaw to gain unauthorized control over the device's operational functions.
The technical implementation of this vulnerability stems from inadequate bounds checking and memory handling within the HTTP parsing routine. When the device receives a specially crafted HTTP request, the parsing function fails to properly validate the incoming data structure, allowing attackers to manipulate memory pointers and write arbitrary data to unrestricted memory locations. This unlimited write capability creates a direct pathway for arbitrary code execution, as attackers can overwrite critical program memory segments including function pointers, return addresses, or executable code sections. The flaw essentially allows an attacker to inject malicious code directly into the device's operational memory space, bypassing normal execution boundaries and potentially gaining full system control.
The operational impact of this vulnerability extends beyond simple device compromise, as it fundamentally undermines the security posture of connected vehicles and their auxiliary devices. The Anker Roav A1 Dashcam operates in environments where vehicle security and privacy are paramount, making this vulnerability particularly concerning for automotive cybersecurity. Attackers could potentially execute code remotely through network-based attacks, leading to unauthorized access to vehicle data, camera feeds, or even vehicle control systems. The implications are significant given that dashcams often store sensitive information including license plate data, location information, and personal identifiers from vehicle occupants, creating potential privacy breaches and security risks for vehicle owners and passengers.
Mitigation strategies for CVE-2018-4029 should prioritize immediate firmware updates from the manufacturer, as this vulnerability affects a specific firmware version that likely contains the flawed HTTP parsing implementation. Network segmentation and access controls should be implemented to limit exposure of the affected device to untrusted networks, while firewall rules can be configured to restrict HTTP traffic to only trusted sources. Device monitoring and intrusion detection systems should be deployed to identify anomalous network traffic patterns that might indicate exploitation attempts. The vulnerability aligns with CWE-121, which addresses stack-based buffer overflow conditions, and represents a classic example of how improper input validation can lead to arbitrary code execution. From an ATT&CK framework perspective, this vulnerability maps to techniques involving remote code execution and privilege escalation, potentially enabling adversaries to establish persistent access to vehicle networks and expand their operational capabilities within automotive environments. Organizations should also consider implementing device authentication mechanisms and secure boot processes to prevent unauthorized firmware modifications that could exploit this vulnerability.