full-disclosure - [FD] RENPHO iOS missing encryption and integrity check

Open Source and information security mailing list archives

Message-Id: <084218D3-1BD9-462F-9583-166E6F81791F@prosec-networks.com>
Date: Tue, 8 Oct 2019 09:58:16 +0200
From: ProSec Security Team <security@...sec-networks.com>
Cc: ProSec Security Team <security@...sec-networks.com>
Subject: [FD] RENPHO iOS missing encryption and integrity check

Hello together, 

we’ve found the following vulnerability below. 

Affected software: RENPHO V3.0.0 (iOS App)
Vulnerability type: Missing Encryption and Integrity Check of Sensitive Data
Vulnerable version: Renpho Mobile Application V3.0.0 for iOS
Vulnerable component: Client app, transmitting data to server backend
Vendor report confidence: Unconfirmed
Fixed version: -
Vendor notification: 13/08/19
Solution date:
CVE reference: CVE-2019-14808
CVSSv3 Score: 6.8  AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Researcher Credits: Tim Schughart, Christian Horn
Communication Timeline: 
13th August 2019 Initial contact - no response
26th September second contact attempt - no response 
08th October fulldisclosure 

Vulnerability Details:
The client application (mobile app for iOS) transmits data unencrypted
to an server in JSON without integrity check, if an user changes
personal data in his profile tab oder logs hisself in his account.

Proof of concept:
Caputre traffice via proxy or MITM attack, while user logs in or changes his user profile. You are able to catch session id for cloning, password in cleartext oder change data on the fly, because of an missing integrity check. 

Best regards / Mit freundlichen Grüßen 

Dr. h.c. Tim Schughart 
CEO / Geschäftsführer  

--
ProSec GmbH
Robert-Koch-Straße 1-9
56751 Polch 

Website: https://www.prosec-networks.com 
E-Mail: info@...sec.networks.com 
Phone: +49 (0)261 450 930 90

Sitz der Gesellschaft / Company domiciled in: Polch
Registergericht / registry Court: Amtsgericht Koblenz, HRB 26457
Geschäftsführer: Tim Schughart
UST-IdNr./ VAT ID: DE321817516

"This E-Mail communication may contain CONFIDENTIAL, PRIVILEGED and/or LEGALLY PROTECTED information and is intended only for the named recipient(s). Any unauthorized use, dissemination, copying or forwarding is strictly prohibited. If you are not the intended recipient and have received this email communication in error, please notify the sender immediately, delete it and destroy all copies of this E-Mail.

"Diese E-Mail Mitteilung kann VERTRAULICHE, dem BERUFSGEHEIMNIS UNTERLIEGENDE und/oder RECHTLICH GESCHÜTZTE Informationen enthalten und ist ausschließlich für den/die genannten Adressaten bestimmt. Jede unbefugte Nutzung, Weitergabe, Vervielfältigung oder Versendung ist strengstens verboten. Sollten Sie nicht der angegebene Adressat sein und diese E-Mail Mitteilung irrtümlich erhalten haben, informieren Sie bitte sofort den Absender, löschen diese E-Mail und vernichten alle Kopien. 

_______________________________________________
Sent through the Full Disclosure mailing list
https://nmap.org/mailman/listinfo/fulldisclosure
Web Archives & RSS: http://seclists.org/fulldisclosure/

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives