false positives -[access_compat:error] AH01797: client denie

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daanse
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false positives -[access_compat:error] AH01797: client denie

Unread post by daanse »

Hi,

i have a Question.
I already discussed over Plesk Forum, why Customers getting Banned.
They refered to this Forum, hopefully to get help.

Details and Logs can be found here: https://talk.plesk.com/threads/fail2ban ... es.338472/

I saw that Customer gots banned with "apache Plesk" jail.
Im using Plesk 12.5 and Mod Security with Atomic Basic ModSecurity and nothing specific else, i turned the Settings to balanced.
I have Debian 8.5

Code: Select all

[Thu Jun 30 12:37:38.445458 2016] [access_compat:error] [pid 12681] [client 79.246.64.98:53263] AH01797: client denied by server configuration: uri /wp-content/plugins/sucuri-scanner/inc/css/A.sucuri-scanner.min.css,qver=5580b26.pagespeed.cf.p5Dip6VJie.css, referer: http://customersdomain.eu/wp-admin/edit.php?post_type=dt_gallery
[Thu Jun 30 12:39:57.687013 2016] [access_compat:error] [pid 14515] [client 79.246.64.98:53295] AH01797: client denied by server configuration: uri /wp-content/plugins/sucuri-scanner/inc/css/A.sucuri-scanner.min.css,qver=5580b26.pagespeed.cf.p5Dip6VJie.css, referer: http://customersdomain.eu/wp-admin/edit.php?post_type=dt_gallery
this is a short output of the Log.

Any help/ advice, i would appreciate.
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mikeshinn
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Re: false positives -[access_compat:error] AH01797: client d

Unread post by mikeshinn »

Thank you for the question, so if these are the only errors you are seeing:

[Thu Jun 30 12:37:38.445458 2016] [access_compat:error] [pid 12681] [client 79.246.64.98:53263] AH01797: client denied by server configuration: uri /wp-content/plugins/sucuri-scanner/inc/css/A.sucuri-scanner.min.css,qver=5580b26.pagespeed.cf.p5Dip6VJie.css, referer: http://customersdomain.eu/wp-admin/edit ... dt_gallery
[Thu Jun 30 12:39:57.687013 2016] [access_compat:error] [pid 14515] [client 79.246.64.98:53295] AH01797: client denied by server configuration: uri /wp-content/plugins/sucuri-scanner/inc/css/A.sucuri-scanner.min.css,qver=5580b26.pagespeed.cf.p5Dip6VJie.css, referer: http://customersdomain.eu/wp-admin/edit ... dt_gallery

Then modsecurity is not whats causing this. Modsecurity doesnt generate error messages like that. They look like this:

[Fri Jun 03 15:56:11 2016] [error] [client 1.2.3.4] ModSecurity: [file "/etc/httpd/modsecurity.d/10_asl_rules.conf"] [line "247"] [id "340155"] [rev "25"] [msg "Atomicorp.com WAF Rules: Generic SQL Injection protection"] [data "information_schema.tables"] [severity "CRITICAL"] Access denied with code 403 (phase 2). Matched phrase "information_schema.tables" at ARGS:amp;t. [hostname "atomicorp.com"] [uri "/forums/viewtopic.php"] [unique_id "V1Hg20rQTRAAABN3YEAAAAAf"]

So, if you dont see errors like that, then its not modsecurity. What the errors you posted do tell me is that apache or the web application is denying access to those resources, either because the files/directories are not accessible by the client or the web server is otherwise denying access to them, for example an .htaccess configuration or modrewrite rules can cause these errors. Other modules may cause these errors too. I would check permissions on those files and directories, .htaccess files and any modrewrite rules to see if they are denying access.

If you need help resolving this issue, please let us know and we'll put a quote together to assist you.
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