My request got 403 when access to url like this format
https://example.com/Test.aspx?param=https%3A%2F%2Fwww.test.com%2Fen-us%3F
I have read the document but I not sure which rule prevented my request.
Anyone can show me:
If you have enabled WAF monitoring for application gateway or for Azure front door, you should see the ruleId
in the Firewall log. Please note that the logs are only saved hourly. You could get more details from this blog.
{
"resourceId": "/SUBSCRIPTIONS/{subscriptionId}/RESOURCEGROUPS/{resourceGroupName}/PROVIDERS/MICROSOFT.NETWORK/APPLICATIONGATEWAYS/{applicationGatewayName}",
"operationName": "ApplicationGatewayFirewall",
"time": "2017-03-20T15:52:09.1494499Z",
"category": "ApplicationGatewayFirewallLog",
"properties": {
"instanceId": "ApplicationGatewayRole_IN_0",
"clientIp": "104.210.252.3",
"clientPort": "4835",
"requestUri": "/?a=%3Cscript%3Ealert(%22Hello%22);%3C/script%3E",
"ruleSetType": "OWASP",
"ruleSetVersion": "3.0",
"ruleId": "941320",
"message": "Possible XSS Attack Detected - HTML Tag Handler",
"action": "Blocked",
"site": "Global",
"details": {
"message": "Warning. Pattern match \"<(a|abbr|acronym|address|applet|area|audioscope|b|base|basefront|bdo|bgsound|big|blackface|blink|blockquote|body|bq|br|button|caption|center|cite|code|col|colgroup|comment|dd|del|dfn|dir|div|dl|dt|em|embed|fieldset|fn|font|form|frame|frameset|h1|head|h ...\" at ARGS:a.",
"data": "Matched Data: <script> found within ARGS:a: <script>alert(\\x22hello\\x22);</script>",
"file": "rules/REQUEST-941-APPLICATION-ATTACK-XSS.conf",
"line": "865"
}
"hostname": "40.90.218.100",
"transactionId": "AYAcUqAcAcAcAcAcASAcAcAc"
}
}