How to disable mod_security2 rule (false positive) for one domain on centos 5

Posted by nicholas.alipaz on Server Fault See other posts from Server Fault or by nicholas.alipaz
Published on 2010-04-26T03:21:26Z Indexed on 2010/04/26 4:53 UTC
Read the original article Hit count: 340

Hi I have mod_security enabled on a centos5 server and one of the rules is keeping a user from posting some text on a form. The text is legitimate but it has the words 'create' and an html <table> tag later in it so it is causing a false positive.

The error I am receiving is below:

[Sun Apr 25 20:36:53 2010] [error] [client 76.171.171.xxx] ModSecurity: Access denied with code 500 (phase 2). Pattern match "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" at ARGS:body. [file "/usr/local/apache/conf/modsec2.user.conf"] [line "352"] [id "300015"] [rev "1"] [msg "Generic SQL injection protection"] [severity "CRITICAL"] [hostname "www.mysite.com"] [uri "/node/181/edit"] [unique_id "@TaVDEWnlusAABQv9@oAAAAD"]

and here is /usr/local/apache/conf/modsec2.user.conf (line 352)

#Generic SQL sigs SecRule ARGS "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" "id:1,rev:1,severity:2,msg:'Generic SQL injection protection'"

The questions I have are:

  1. What should I do to "whitelist" or allow this rule to get through?
  2. What file do I create and where?
  3. How should I alter this rule?
  4. Can I set it to only be allowed for the one domain, since it is the only one having the issue on this dedicated server or is there a better way to exclude table tags perhaps?

Thanks guys

© Server Fault or respective owner

How to disable mod_security2 rule (false positive) for one domain on centos 5

Posted by nicholas.alipaz on Stack Overflow See other posts from Stack Overflow or by nicholas.alipaz
Published on 2010-04-26T03:21:26Z Indexed on 2010/04/26 3:23 UTC
Read the original article Hit count: 340

Hi I have mod_security enabled on a centos5 server and one of the rules is keeping a user from posting some text on a form. The text is legitimate but it has the words 'create' and an html <table> tag later in it so it is causing a false positive.

The error I am receiving is below:

[Sun Apr 25 20:36:53 2010] [error] [client 76.171.171.xxx] ModSecurity: Access denied with code 500 (phase 2). Pattern match "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" at ARGS:body. [file "/usr/local/apache/conf/modsec2.user.conf"] [line "352"] [id "300015"] [rev "1"] [msg "Generic SQL injection protection"] [severity "CRITICAL"] [hostname "www.mysite.com"] [uri "/node/181/edit"] [unique_id "@TaVDEWnlusAABQv9@oAAAAD"]

and here is /usr/local/apache/conf/modsec2.user.conf (line 352)

#Generic SQL sigs SecRule ARGS "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" "id:1,rev:1,severity:2,msg:'Generic SQL injection protection'"

The questions I have are:

  1. What should I do to "whitelist" or allow this rule to get through?
  2. What file do I create and where?
  3. How should I alter this rule?
  4. Can I set it to only be allowed for the one domain, since it is the only one having the issue on this dedicated server or is there a better way to exclude table tags perhaps?

Thanks guys

© Stack Overflow or respective owner

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