It has long been a household name that DNS has loopholes, and everyone knows about it. However, in full view of the public, DNS has let people down again. If there are loopholes, they must be patched. This is no problem. However, just after patching, someone claimed that he could break through the patched DNS server and cause it to cause errors or even shut down. And the entire demonstration process only took a few hours. So, this situation shows that the so-called DNS patch is insufficient.
A vulnerability is a flaw in the specific implementation of hardware, software, protocols, or system security policies that allows an attacker to access or damage the system without authorization. Vulnerabilities may be used by attackers to threaten system security. Due to the special status of DNS, it is closely related to the interests of each user. Small errors will cause errors when accessing a single web page. If there are many problems, they will affect the entire network and may cause the entire network to paralyze.
Therefore, DNS has great hidden dangers in network security due to its own vulnerabilities. Perhaps because the tree attracts wind, it often becomes the target of attacks by criminals. DNS itself is very fragile and cannot withstand the torment. If another problem such as a loophole occurs, the consequences can be imagined.
For DNS, which is in such a serious situation, it was broken just after the patch was patched. It's really frustrating, just hoping to patch it up to block the wind, but the result is great, I just patched it up, took a look, and then, it broke.
(Source: http://dns.qy.com.cn )