BApp details: Image Size Issues
This extension passively detects potential denial of service attacks due to the size of an image being specified in request parameters.
When serving image assets, many web developers find it useful to have a feature that scales the image to a size specified in a URL parameter. Such functionality can not only be used for scaling images down but also making them huge, this leads to Denial of Service (DoS).
In active scanning mode the extension also detects ImageTragick (CVE-2016-3714) in an experimental manner based on timing.
Please refer to the blog post for more details.
You can install BApps directly within Burp, via the BApp Store feature in the Burp Extender tool. You can also download them from here, for offline installation into Burp.
Please note that extensions are written by third party users of Burp, and PortSwigger Web Security makes no warranty about their quality or usefulness for any particular purpose.