bugtraq - Evernote for Windows DLL Loading Remote Code Execution Vulnerability

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <201610141228.u9ECSYw2009202@sf01web3.securityfocus.com>
Date: Fri, 14 Oct 2016 12:28:34 GMT
From: mehta.himanshu21@...il.com
To: bugtraq@...urityfocus.com
Subject: Evernote for Windows DLL Loading Remote Code Execution Vulnerability

Aloha,

Summary
Evernote contains a DLL hijacking vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system. The vulnerability exists due to some DLL file is loaded by 'Evernote_6.1.2.2292.exe' improperly. And it allows an attacker to load this DLL file of the attacker’s choosing that could execute arbitrary code without the user's knowledge.

Affected Product:
Evernote 6.1.2.2292

Fixed in: Evernote for Windows 6.3 
WINNOTE-15637 https://evernote.com/security/updates/

Tested on: Windows 7

Impact
Attacker can exploit this vulnerability to load a DLL file of the attacker's choosing that could execute arbitrary code. This may help attacker to Successful exploit the system if user creates shell as a DLL.

Vulnerability Scoring Details
The vulnerability classification has been performed by using the CVSSv2 scoring system (http://www.first.org/cvss/).
Base Score: 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)

Proof of concept/demonstration:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. Create a malicious 'dwmapi.dll' or 'ntmarta.dll' file and save it in your "Downloads" directory.

2. Download 'Evernote_6.1.2.2292.exe' from and save it in your "Downloads" directory.

3. Execute .exe from your "Downloads" directory.

4. Malicious dll file gets executed.

Chao!!
Himanshu Mehta