Introduction
D-Link, a global leader in networking solutions and is particularly renowned for its offerings tailored to small and medium-sized businesses (SMBs). Over the decades, D-Link has expanded its product portfolio and global reach, making it a key player in the networking industry. Today there are many device vulnerabilities that have been identified across various D-Link devices, posing significant security risks.
- CVE-2020-9376: The D-Link DIR-610 devices are affected by an information disclosure vulnerability that exposes sensitive information through inadequately secured getcfg.php endpoints. This issue is particularly problematic because it impacts devices that are no longer supported by D-Link, meaning there are no official updates or patches available to address the vulnerability.
- CVE-2022-28956: The getcfg.php component in D-Link DIR816L routers with firmware version FW206b01 has a critical vulnerability that allows attackers to gain unauthorized access through a specially crafted payload. With a CVSS score of 9.8, this vulnerability presents a high risk, potentially enabling significant control and unauthorized access to the affected devices.
- CVE-2021-40655: D-Link DIR-605 B2 routers are vulnerable to an issue that enables attackers to access sensitive information, such as usernames and passwords, through maliciously crafted POST requests. This vulnerability is included in CISA’s list of known exploited vulnerabilities, highlighting its severity and the fact that it is actively being used in cyberattacks.
Fortinet Protection Assurance
FortiWeb provides robust defense against these vulnerabilities through its advanced signature-based system. This system is specifically designed to detect and block exploitation attempts targeting the identified vulnerabilities, thus securing and protecting your network from potential threats. So, how does Fortinet safeguard these devices from attacks?
To mitigate CVE-2020-9376 and CVE-2022-28956, FortiWeb’s signature-based protection effectively mitigates unauthorized access by identifying and blocking malicious requests aimed at the getcfg.php component.
Regarding CVE-2021-40655, FortiWeb plays a crucial role in intercepting and analyzing potentially harmful POST requests designed to extract sensitive information, thereby safeguarding user credentials against unauthorized disclosure.
To enhance protection against these vulnerabilities with FortiWeb, organizations should implement the following additional measures:
- Update and Patch: Ensure all available security patches from D-Link are applied, or consider upgrading to supported device models to address known vulnerabilities.
- Network Segmentation: Reduce the risk by isolating vulnerable devices within the network using VLANs or firewall rules, thereby controlling and limiting traffic to and from these devices.
- Regular Monitoring: Continuously monitor network traffic for unusual activity that could indicate exploitation attempts, especially for devices that are known to be vulnerable.
Conclusion
The identification of vulnerabilities such as CVE-2020-9376, CVE-2022-28956, and CVE-2021-40655 in commonly used D-Link devices underscores the critical need for robust security measures. These vulnerabilities expose networks to significant risks, including unauthorized access and data breaches.
To address these threats effectively, it is essential to implement a multi-faceted security strategy. Utilizing advanced solutions like FortiWeb, which offers comprehensive protection through its sophisticated signature-based detection system, plays a crucial role in mitigating these risks. FortiWeb's capabilities in identifying and blocking exploit attempts provide an additional layer of defense against potential attacks.
In addition to deploying FortiWeb, organizations should adhere to best practices such as applying all available security patches, considering upgrades to supported device models, segmenting the network to limit exposure of vulnerable devices, and continuously monitoring network traffic for signs of exploitation.
By combining these proactive measures with advanced security solutions, organizations can significantly reduce the risk posed by these vulnerabilities and enhance their overall network security posture.
