CVE-2017-9104

CVE-2017-9104 is a critical vulnerability affecting adns versions prior to 1.5.2, including various Fedora and openSUSE distributions. This flaw allows an unauthenticated attacker to trigger a denial-of-service condition by sending a specially crafted DNS query that causes the adns resolver to enter an infinite loop, consuming excessive CPU resources. With a CVSS score of 9.8, the vulnerability is easily exploitable over the network with no user interaction, leading to high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness among security researchers.