Usman Waheed | 10 May 2012 13:59
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Re: REQUEST_BODY has some XML

Just wanted to share with the rest, Ryan's pointer worked for me.

In my modsecurity_crs_10_config.conf i set:

SecRule REQUEST_FILENAME " <at> streq /cgi-bin/form.pl" \
"chain,phase:1,id:'981053',t:none,t:lowercase,pass,nolog"
SecRule REQBODY_PROCESSOR "! <at> streq XML" "ctl:requestBodyProcessor=XML"

In my modsecurity_crs_15_customrules.conf i set:

SecRule XML " <at> validateSchema /etc/apache2/xsd/test.xsd" \
"phase:2,log,auditlog,deny,status:403,msg:'XSD check failed',tag:'MOD  
SECURITY  
TEST',setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},id:'500001',severity:2"

With the above settings, i was able to test a request (to:  
/cgi/bin/form.pl) with REQUEST_HEADER = Content-type:  
application/x-www-form-urlencoded and changed the xml values in my post to  
make the xsd check fail.

Thanks much,
-Usman

> Thanks for the pointer, will check it out.
>
>> SecRule REQUEST_FILENAME " <at> streq /path/to/file.php" \
>>         "chain,phase:1,id:'1',t:none,t:lowercase,pass,nolog"
>>         SecRule REQBODY_PROCESSOR "! <at> streq XML"
>> "ctl:requestBodyProcessor=XML"
>
>

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Gmane