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Admin Tools

#12996 File Scanner Took Down Server

Posted in ‘Admin Tools for Joomla! 4 & 5’
This is a public ticket

Everybody will be able to see its contents. Do not include usernames, passwords or any other sensitive information.

Environment Information

Joomla! version
n/a
PHP version
n/a
Admin Tools version
n/a

Latest post by nicholas on Thursday, 19 July 2012 13:19 CDT

user63724
Mandatory information about my setup:

Have I read the related troubleshooter articles above before posting (which pages?)? No
Have I searched the tickets before posting? Yes
Have I read the documentation before posting (which pages?)? Yes
Joomla! version: 1.5.26
PHP version: v2.2.0
MySQL version: 5.1.58
Host: local
Admin Tools version: Admin Tools Professional 2.2.9

Description of my issue:

Had a hacking attempt last night. User got in, I shut the site down and removed the user that was affected user. After I deemed the site safe. I ran the file scanner. As it was running I left it be and did other tasks. The File Scanner ended up running for 8 hours and DoS'd the server. I restarted the server and all was well.

Is this an error with the file scanner?

What recommended action should I take. Is this an error with my app config, server config or is it potentially from the attack?

Thank you all!

nicholas
Akeeba Staff
Manager
Running the File Scanner is no different than running a full site backup. If you have a very big site with a tonne of PHP files it will take a lot of resources to scan it. Going up to the point of causing your server to hang is extremely unlikely but not impossible.

Nicholas K. Dionysopoulos

Lead Developer and Director

🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!

user63724
Hi Nicholas,

Thanks for the quick reply.

I can backup the entire site within 2 minutes using akeeba backup.

This also pushes my CPU to 95% of max where a backup didn't get to 40% (both of these include all other processes).

Admin Tools works great other than this and gave me a head start on the attack.

nicholas
Akeeba Staff
Manager
I guess that was an unrelated server problem which coincided with the file scan. Admin Tools uses the same engine as Akeeba Backup. The only difference is that instead of compressing the files into an archive it calculates an MD5 sum and stores it in the database. In fact, File Scanner is only 30%-50% more resource intensive than a backup.

Nicholas K. Dionysopoulos

Lead Developer and Director

🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!

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