[BUG][PanelRedirect] apache process consumes all cpu time

lorus · Apr 25th 2016

Hi,

since updating to imscp 1.2.17 (from 1.2.1) I have the problem that over time more and more apache processes are spawned that constantly consume 100% cpu each.

Code

# top
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5547 www-data 20 0 244964 16556 4688 S 125.0 0.8 64:09.13 apache2
4036 www-data 20 0 246248 17848 4664 S 100.1 0.9 327:30.57 apache2
5912 www-data 20 0 239296 8820 3444 S 74.8 0.4 3:50.93 apache2
...

Can you help me to find out, whats going wrong here?
I'm using Ubuntu 14.04 and imscp is configured with php-fpm.

lorus · Apr 26th 2016

Hi,

I've just found out, that PanelRedirect plugin causes this problem. For each request of https://panel.domain.tld/ a new apache process with 100% CPU in endless loop is spawned.

Deactivating the plugin resolves the issue.

How can the plugin made work again?

Thanks

**Nuxwin** · Apr 26th 2016

@Ninos

Can you try to reproduce?

mafioso · Apr 26th 2016

Huh? I'll try tomorrow

mafioso · Apr 26th 2016

Tried it out, cannot reproduce. Is there may a bruteforce attack on one of your panel pages (panel, webmail, pma, ftp..)? BTW I sent 1000 requests under 5 secs, CPU was still ok..

[BUG][PanelRedirect] apache process consumes all cpu time

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