An exploit would be successful if an attacker controls a legitimate DNS name, for example using a subdomain of a legitimate domain. An exploit would work against any vulnerable version of Technitium DNS Server through 8.0.2, such as through a cross-site scripting vulnerability. Furthermore, the vulnerability is in the software's default settings, and any attacker would only need to set up a subdomain of a legitimate domain to exploit it. An exploit against Technitium DNS Server through 8.0.2 would have significant consequences, as it would be impossible to detect. An attacker would be able to redirect users to malicious websites, post fake news, or even cause a complete system crash.

Technitium DNS Server Through 8.0.2 OAuth Vulnerability

Technitium DNS Server is vulnerable to attacks because of a flaw in the OAuth authorization process. When an attacker has access to a legitimate hostname, they can perform an OAuth attack by setting up a subdomain. For example, if an attacker sets up a subdomain called "" on one of their own websites and then uses it to call "", everything would appear normal to any user who visits the website.
An exploit against Technitium DNS Server through 8.0.2 would be successful if an attacker controls a legitimate DNS name that's used in the OAuth process (for example, using a subdomain of a legitimate domain). An exploit against Technitium DNS Server would only have significant consequences for those using it for their own website; however, any vulnerability like this could cause significant problems for websites that rely on Technitium DNS Server for security purposes.

Steps to Take to Stay Protected

If a system administrator is using Technitium DNS Server through 8.0.2, they should be aware of this vulnerability and take the proper steps to protect their network. If a system administrator suspects that their environment is vulnerable, then they should check to see if any subdomains are configured for their legitimate domain. If there are no matching subdomains, then it is not possible for an attacker to exploit the vulnerability. In addition, administrators should ensure that all systems in their environment have up-to-date patches installed and are running on updated versions of Technitium DNS Server.

How Does DNS Work?

DNS (Domain Name System) is the Internet's unique addressing system. It allows computers that share a common language of IP addresses to identify each other by name. DNS accomplishes this by assigning a numerical label to each host on the Internet. This label is an IP address, but it also includes some context specific data, such as a domain name or server location.
A DNS server translates the numerical label into a human-readable text one. For example, the IP address would be translated into the domain name "192-168-0-10." The DNS server then sends your request to another computer with the requested information on it (in this case 192-168-0-10). The two computers communicate and complete your request.


Published on: 11/21/2022 22:15:00 UTC
Last modified on: 11/28/2022 17:53:00 UTC