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Please reply this For this Linux system, what do you recommend...

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Asked by tizisergine on coursehero.com

Please reply this For this Linux system, what do you recommend...

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  1. For this Linux system, what do you recommend fixing right away? Are there dangers if the vulnerabilities and associated threats are not fixed?

From the scan results, I would upgrade the software version from 8.04 to more recent version. This is because the currently installed version is no longer supported by Ubuntu. This means that the remote host system cannot be patched and any vulnerabilities there can be exploited by adversaries. An example is that the company is vulnerable to Denial of Service (DoS) attack if an unprivileged local user gains access to the Linux kernel's NFSv4 (Network File System version 4) file system [1]. A DoS attack is when the company cannot get access to its machines in order to perform any business activities. This could cause both financial and reputation loss.

        2. How do you fix the problem(s) identified? Can you defer mitigation for another time? How can the problem(s) be fixed if            the system cannot be taken offline?

Ubuntu is one of the easiest operating systems to upgrade because, whilst it is advisable to backup data on a removable drive, data can it be migrated from an older version to a new version without a glitch [2]. This means that Mercury USA systems do not need to be taken offline for us to upgrade the system. If this is needed, we may have to do it during the weekends or when there is a slow day in activities. Can we deter mitigation to another time, No. This is because any time delayed for this upgrade presents an enormous risk for the company. 

       3. Since some machines were already scanned with OpenVAS, should you also consider scanning the same systems with               Nessus? Why or why not?

According to industry standards, vulnerability scanning should be carried out at least once a quarter, and if critical vulnerabilities are discovered, scans should be repeated weekly to ensure that fixes are effective. I would also consider using another scanning tool such as Nessus because it provides you with an exact fix that is needed to solve the vulnerability found on the scan.  

       4. Conduct open-source research using the internet. Roughly, what is the cost to license Nessus for one year?

The cost of a Nessus license depends on the number of users and the length of time the license is valid for. A one-year license for a single user costs $3,790. The cost includes a $400 annual customer support fee.

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Answered by geraldineranulan on coursehero.com

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