Re: Large Payload processing time

Processing time of each rules which take the longest with our payload:

932110 - All Enabled 
Processing Time: 779

 

932100- Removes unix command injection filtering
Processing Time: 13

 

932105 - Removes unix command injection filtering 2 
Processing Time: 14

 

932150- Removes remote code execution 
Processing Time: 2

 

932115 - Oracle WebLogic Remote Command Execution exploit
Processing Time: 700

 

942230 - Disables PHPIDS - Converted SQLI Filters
Processing Time: 7

 

942190 - Disables PHPIDS - Converted SQLI Filters
Processing Time: 1 Seconds

 

921120 - Disables HTTP Response Splitting
Processing Time: 2

 

942360 - Disables Sources for SQL ALTER statements
Processing Time: 2

 

941130 - Disables XSS Filters - Category 3 
Processing Time: 9

 

941170 - Disables XSS [NoScript InjectionChecker] Attributes injection
Processing Time: 7

 

941120 - Disables XSS vectors making use of event handlers like onerror, onload
Processing Time: 3 Seconds

Thanks,

Joe.

Joe Madden
Systems Engineer
D 01412224666      
[email protected]


-----Original Message-----
From: Madden, Joe via mod-security-users <[email protected]> 
Sent: 11 June 2020 14:45
To: Madden, Joe via mod-security-users <[email protected]>
Cc: Madden, Joe <[email protected]>; [email protected]
Subject: [mod-security-users] Large Payload processing time

Hi all,

I've had to disable the following rules in order to get a payload to process in a resonable amount of time.

It a XML payload with up to 20Mb in size, These are the rules which cause the processing from from around 30 seconds to  772 seconds


            # Disables checking for Windows command injection 
            SecRuleRemoveById 932110

            #Removes unix command injection filtering
            SecRuleRemoveById 932100

            #Removes unix command injection filtering 2
            #SecRuleRemoveById 932105

            #removes unix remote code exceuction
            #SecRuleRemoveById 932150

            #Disables Oracle WebLogic Remote Command Execution exploit
            #SecRuleRemoveById 932115

            #Disables PHPIDS - Converted SQLI Filters - Not required
            #SecRuleRemoveById 942230

            #Disables PHPIDS - Converted SQLI Filters - Not required
            #SecRuleRemoveById 942190

            #Disables HTTP Response Splitting - Not Required
            #SecRuleRemoveById 921120

            # Disables Sources for SQL ALTER statements
            #SecRuleRemoveById 942360

            #Disables XSS Filters - Category 3 - Not required
            #SecRuleRemoveById 941130

            #Disables XSS [NoScript InjectionChecker] Attributes injection - Not required
            #SecRuleRemoveById 941170

            #Disables XSS vectors making use of event handlers like onerror, onload
            #SecRuleRemoveById 941120

I'll have times by the end of the day which rules take the longest but for example - Does anyone have any recommendations about this? We'd like to leave the uinix RCE and command filters on at this is what our platform is.

Thanks

Joe.

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