Resolved How to fix Dirty Cow vulnerability in Plesk?

[Dan Hammer]

I ran a test and discovered my Plesk system is vulnerable to Dirty Cow. What is the proper procedure to update Plesk to fix this issue? I have web admin and command line (root) access. The server runs CentOS 7 and Plesk 12.5

Thanks in advance.

 

[UFHH01]

Hi Dan Hammer,

pls. be aware, that Plesk is not shipped with any kernel for your operating system. Conisder to update/upgrade your operating system by using your package manager "yum" on CentOS/RHEL - based systems.

 

[IgorG]

More detail can be found here - https://talk.plesk.com/threads/dirty-cow-cve-2016-5195.339706/

 

[Dan Hammer]

Should I do "yum update" or "yum update kernel"? I tested both methods on a couple of VPS systems. Obviously "yum update kernel" touches far fewer files. Just trying to avoid any negative impact on Plesk.

 

[UFHH01]

Hi Dan Hammer,

pls. be informed that updating your operating system with "yum update" ( by using ONLY official repositories! ), is a "system administrator task" and should be done on a regular basis, to keep your system up-to-date. Plesk works together with an outdated, supported operating system and with an up-to-date, supported operating system. Just make sure, that you meet the Plesk requirements, documented at:

Software Requirements for Plesk 12.5 ( official Plesk 12.5. documentation )​

 

[Dan Hammer]

Thank you for your help. I am relatively new to Plesk and I am just overly cautious right now. I don't want to accidentally replace a critical file that causes Plesk to stop working. Until I get more comfortable with the system I will proceed carefully.