Issue Plesk Firewall IP-Whitelist does not work correctly

[Danny325]

Plesk Obsidian 18.0.21 Update Nr. 5
Today i discovered some huge security issue with Plesk Firewall.
Because we got a new static ip adress, i discovered "Allow from selected sources, deny from others" does not work.

My old static ip adress was whitelisted, but i got still full access with the new one. The only way it works correctly is to disallow.
I do also tried to insert a random ip adress, in case of cache issues on my pc.

Good to know my server was free for hackers over the full time using Plesk.

 

[fferraro87]

From last update (#5) i've many error with firewall plesk, it drop many connections from good ips