CVE-2023-33778 : Security Advisory and Response
CVE-2023-33778 poses a threat to Draytek Vigor Routers, Switches, and Myvigor devices by allowing attackers to bind affected devices to their account, enabling unauthorized activities.
A vulnerability in Draytek Vigor Routers, Access Points, Switches, and Myvigor devices could allow attackers to bind affected devices to their own account.
Understanding CVE-2023-33778
This CVE highlights a security issue in various Draytek devices that could be exploited by attackers to take control of the affected devices.
What is CVE-2023-33778?
The vulnerability exists in Draytek Vigor Routers firmware versions below 3.9.6/4.2.4, Access Points firmware versions below v1.4.0, Switches firmware versions below 2.6.7, and Myvigor firmware versions below 2.3.2. Attackers can leverage hardcoded encryption keys to associate affected devices with their own account, enabling unauthorized actions.
The Impact of CVE-2023-33778
By exploiting this vulnerability, attackers can create WCF and DrayDDNS licenses and sync them from a specific website. This unauthorized access can lead to a complete compromise of the affected devices.
Technical Details of CVE-2023-33778
This section provides more insight into the vulnerability's description, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
Draytek devices are found to use hardcoded encryption keys, allowing threat actors to link devices to their account and perform unauthorized actions such as creating licenses.
Affected Systems and Versions
Draytek Vigor Routers firmware versions < 3.9.6/4.2.4, Access Points firmware versions < v1.4.0, Switches firmware versions < 2.6.7, and Myvigor firmware versions < 2.3.2 are susceptible to this vulnerability.
Exploitation Mechanism
Attackers can utilize the hardcoded encryption keys to associate affected devices with their own account, enabling them to create licenses and sync them from a specific website.
Mitigation and Prevention
Find out how to protect your devices from CVE-2023-33778 and prevent unauthorized access.
Immediate Steps to Take
Users should update the firmware of their Draytek devices to versions above the specified vulnerable versions. Additionally, changing default settings and using strong, unique passwords can enhance security.
Long-Term Security Practices
Regularly check for firmware updates and security advisories from Draytek to stay informed about potential vulnerabilities and apply patches promptly.
Patching and Updates
Draytek may release patches to address this vulnerability. Users are advised to apply all relevant security updates as soon as they become available.