Re: site compromised and httpd log analysis

["Paul Kudla (SCOM.CA Internet Services Inc.)" <paul@xxxxxxx>]

ok may or may not be related but i found i had to lock php, wordpress 
etc down heavely in apache

especially if you are using vhosts

i found one authorized site could talk to another without making things 
more strict

yes its a pain to have one vhost per site but its the only way to fully 
isolate one from the other

if someone executes stuff it stays within their working directory

example (shows http alias etc - note the directory directives - i use a 
database --> script generator so its not too inconvient.) :


<VirtualHost *:80>
ServerName bedrockconstruction.ca
ServerAlias bedrockconstruction.ca
ServerAlias www.bedrockconstruction.ca
Redirect permanent / https://bedrockconstruction.ca/
</VirtualHost>

<VirtualHost *:443>
ServerName bedrockconstruction.ca
ServerAlias bedrockconstruction.ca
ServerAlias www.bedrockconstruction.ca
DocumentRoot /www/bedrockconstruction.ca

SSLEngine on
SSLProtocol all
SSLCertificateFile 
/www/bedrockconstruction.ca/ssl/bedrockconstruction.ca.crt
SSLCertificateKeyFile 
/www/bedrockconstruction.ca/ssl/bedrockconstruction.ca.key
SSLCertificateChainFile 
/www/bedrockconstruction.ca/ssl/bedrockconstruction.ca.chain


SuexecUserGroup www www

<Directory "/www/bedrockconstruction.ca/wp-content/uploads/">
<Files "*.php">
Order Deny,Allow
Deny from All
</Files>
</Directory>

<Directory /www/bedrockconstruction.ca>
php_admin_value open_basedir /www/bedrockconstruction.ca:/var/log/
</Directory>

<Directory /www/bedrockconstruction.ca>
php_admin_value sys_temp_dir /www/bedrockconstruction.ca/tmp/
</Directory>

<Directory /www/bedrockconstruction.ca>
php_admin_value session.save_path /www/bedrockconstruction.ca/tmp/
</Directory>

<Directory /www/bedrockconstruction.ca>
php_admin_value soap.wsdl_cache_dir /www/bedrockconstruction.ca/tmp/
</Directory>

<Directory /www/bedrockconstruction.ca>
php_admin_value upload_tmp_dir /www/bedrockconstruction.ca/tmp
</Directory>

<Directory "/www/bedrockconstruction.ca">
AllowOverride All
php_value session.save_path "/www/bedrockconstruction.ca/"
</Directory>

</VirtualHost>












Happy Wednesday !!!
Thanks - paul

Paul Kudla


Scom.ca Internet Services <http://www.scom.ca>
004-1009 Byron Street South
Whitby, Ontario - Canada
L1N 4S3

Toronto 416.642.7266
Main 1.866.411.7266
Fax 1.888.892.7266
Email paul@xxxxxxx

On 7/5/2022 9:52 PM, KK CHN wrote:
> https://pastebin.com/YspPiWif <https://pastebin.com/YspPiWif>
>
> One of the websites hosted  by a customer on our Cloud infrastructure 
> was compromised, and the attackers were able to replace the home page 
> with their banner html page.
>
> The log files output I have pasted above.
>
> The site compromised was PHP 7 with MySQL.
>
>  From the above log, can someone point out what exactly happened and how 
> they are able to deface the home page.
>
> How to prevent these attacks ? What is the root cause of this 
> vulnerability  and how the attackers got access ?
>
> Any other logs or command line outputs required to trace back kindly let 
> me know what other details  I have to produce ?
>
> Kindly shed your expertise in dealing with these kind of attacks and 
> trace the root cause and prevention measures to block this.
>
> Regards,
> Krish
>
>
>
> --
> This message has been scanned for viruses and
> dangerous content by *MailScanner* <http://www.mailscanner.info/>, and is
> believed to be clean.

---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx
For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx