Reflected File Download

Summary#

Invicti detected a possible reflected file download which might enable attackers to gain complete control over a website user's machine by virtually downloading a file from a trusted domain.

This is a vulnerability in the browsers that only affects Microsoft Windows systems.

Impact#

An attacker can craft a URL on the target website that can execute commands on the website visitor's computer if the visitor accepts the download.

For a Reflected File Download attack to be successful:

Attacker controlled input needs to be reflected in the response.
Attacker should be able to change the URL of the vulnerable site to an executable file extension resulting a file download on the website user's browser.

Remediation#

Add Content-Disposition header with filename attribute in the HTTP response:
```
Content-Disposition: attachment; filename=f.txt
```

Classifications#

ISO27001-A.14.2.5, PCI v3.2-6.5.1, OWASP 2013-A1, OWASP 2017-A1, CAPEC-375, CWE-840, WASC-42

Reflected File Download

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