LoFP / security scans and tests may result in these errors. misconfigured or buggy applications may produce large numbers of these errors. if the source is unexpected, the user unauthorized, or the request unusual, these may indicate suspicious or malicious activity.

Techniques

Sample rules

Web Application Suspicious Activity: POST Request Declined

• source: elastic
• technicques:

Description

A POST request to a web application returned a 403 response, which indicates the web application declined to process the request because the action requested was not allowed.

Detection logic

http.response.status_code:403 and http.request.method:post

Web Application Suspicious Activity: Unauthorized Method

• source: elastic
• technicques:

Description

A request to a web application returned a 405 response, which indicates the web application declined to process the request because the HTTP method is not allowed for the resource.

Detection logic

http.response.status_code:405