If you are easy nervous, seems IT job not suitable for you! The Domain Name System (DNS) is the backbone of the modern internet. The workstation similar a blind people searching the correct pathway in the dark. ISC releases security advisory for BIND yesterday. My roughly statistic shown to me that this is the third times within this year!
A technical feature so called “Deny-answer-aliases” design to protect end users against DNS rebinding attack. A defact causes an INSIST assertion failure in named. causing the named process to stop execution and resulting in denial of services to client. What is Named. The Named is a Domain Name System (DNS) server, part of the BIND 9 distribution from ISC. Named will read the default configuration file /etc/named.conf, read any initial data, and listen for queries. For more details about this vulnerability. Please refer the following – https://kb.isc.org/article/AA-01639/0
ISC BIND vulnerabilities details on May and June this year.