CVE-2017-2283 in WN-G300R3
Summary
by MITRE
WN-G300R3 firmware version 1.0.2 and earlier uses hardcoded credentials which may allow an attacker that can access the device to execute arbitrary code on the device.
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Analysis
by VulDB Data Team • 11/03/2019
The WN-G300R3 is a wireless router manufactured by D-Link, and CVE-2017-2283 highlights a critical security flaw in its firmware versions 1.0.2 and earlier. This vulnerability stems from the use of hardcoded credentials within the device's firmware, creating a persistent security weakness that can be exploited by attackers who gain physical or network access to the device. The presence of hardcoded credentials represents a fundamental flaw in the device's authentication mechanism, as these credentials are embedded directly into the firmware code rather than being dynamically generated or securely stored.
The technical nature of this vulnerability aligns with CWE-798, which specifically addresses the use of hard-coded credentials in software systems. When credentials are hardcoded, they become accessible to anyone who can inspect the firmware or has physical access to the device. This flaw enables attackers to authenticate to the device using predetermined usernames and passwords that are not easily changed or removed. The vulnerability creates a backdoor access point that bypasses normal authentication mechanisms and can be exploited to gain unauthorized access to the device's administrative interface.
The operational impact of this vulnerability is significant as it allows an attacker with access to the device to execute arbitrary code on the router. This arbitrary code execution capability enables attackers to take complete control of the device, potentially leading to man-in-the-middle attacks, network monitoring, traffic redirection, or even using the compromised router as a pivot point to attack other devices on the network. The attack surface expands beyond the single compromised device, as routers often serve as central points of network access and control.
The exploitation of this vulnerability typically requires an attacker to have either physical access to the device or network access that allows them to interact with the router's services. The attack can be categorized under the MITRE ATT&CK framework's technique T1059, which involves executing commands through legitimate system utilities, as attackers can leverage the hardcoded credentials to establish a foothold and then execute malicious commands. The vulnerability also relates to T1078, which covers legitimate credentials for lateral movement, as compromised credentials can be used to access other network resources.
Mitigation strategies for CVE-2017-2283 primarily involve updating the firmware to a version that removes or properly manages credentials. D-Link has released firmware updates that address this issue, and users should immediately upgrade their devices to the latest available firmware. Network administrators should also implement additional security controls such as network segmentation, firewall rules, and monitoring to detect unauthorized access attempts. Regular security audits and device inventory management are essential to identify and remediate similar hardcoded credential issues in other network devices. Physical security measures should also be implemented to prevent unauthorized access to network equipment, as the vulnerability can be exploited through direct physical access to the device.