When you are using the Microsoft Exchange Server Online, then it is necessary for you to patch it as soon as you can, if you didn’t do it till now. The reason for it is that the foreign remote attacks can attack its unpatched services. Yet Microsoft has not disclosed any other way to avoid the threat of the CVE-2020-0688. So, you have to work this way to secure yourself from the remote attacks.
CVE-2020-0688 Fix Underway
This vulnerability comes to light due to some anonymous researchers. He contacted the Zero Day Initiative regarding the threat, and they published it on the demoed the vulnerability, Microsoft Exchange Server RCE (Remote Code Execution). This action is conducted only to inform and educate the people. Till then, Microsoft had released the patch to eliminate the bug.
As per nature, cybercriminals came up with new and improved ideas. As the information about this bug came in the notice of the public, and in a few times, they have started a gigantic search to find the Exchange Servers, which were not unpatched till then. They had seen a lot of users in that category, and those users came out about the data which they have faced.
It happened because many uninformed users didn’t perform any activity to secure themselves. So, when they search for the ongoing yields, there are many chances that they are going to face the exploitation of CVE-2020-0688 loophole.
There are reports that there is the possibility that this evil deed is happening, but still, there is no proof that this had happened to the users (yet there are speculation but no confirmed cases, so far).
As per Microsoft, CVE-2020-0688 is defined as the RCE (Remote Code Execution) vulnerability. It can create the failure of the Exchange Server Failure due to this fact, and it can’t generate a unique key during the installation process.
As the IT sector explains, the Cryptographic Keys are the heart (source) of the collected data. If the cybercriminals (bad once) can decrypt these keys, then they have the chance that can exploit the CVE-2020-0688 vulnerability.
Microsoft has rated the severity of this threat “Important,” not the Critical or Sevier. It can be due to this fact a cybercriminal needs authentification for the access of the validation keys.
What to Do
If the person trying to get access to the Exchange Server is determined, then he can get access to the credential from any other methods too. These are old school but still effective against the uninformed users.
You have to consider this that every cybersecurity violations are not conducted by the dangerous, harmful people operating from some shed and having evil plans after getting access. It also can come from the properly validated authority to fix all possible bugs or just unsocialized harmless person with no plans.
So, you should install the patching update released by Microsoft to avoid the foreign attacks. If there is any more development, then you will have here.
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