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WEG SuperDrive G2 12.0.0 Insecure File Permissions

WEG SuperDrive G2 12.0.0 Insecure File Permissions
Posted Jan 18, 2016
Authored by LiquidWorm | Site zeroscience.mk

SuperDrive suffers from an elevation of privileges vulnerability which can be used by a simple authenticated user that can change the executable file with a binary of choice. The vulnerability exist due to the improper permissions, with the 'C' flag (Change) for 'Authenticated Users' group.

tags | exploit
MD5 | 742d3a6b76a3af120c6668ed7d938054

WEG SuperDrive G2 12.0.0 Insecure File Permissions

Change Mirror Download

WEG SuperDrive G2 v12.0.0 Insecure File Permissions


Vendor: WEG Group
Product web page: http://www.weg.net
Affected version: SuperDrive G2 (v12.0.0 Build 20150930-J1.8.0_60-NB8.0.2)
SuperDrive (v7.0.0)

Summary: SuperDrive is a Windows graph tool for parameter setting,
control and monitor of WEG Drives. It permits to edit directly in the
drive online parameters, or to edit offline parameter files stored
in the microcomputer. It enables you to store parameters of all drives
that exist in the installation. The software also incorporates functions
enable the upload to the drive of the microcomputer parameters sets
as well as the download from the drive to the microcomputer. The
communication between drive and microcomputer is realized via RS232
serial interface (point to point) or by RS485 for network linkage.

Desc: SuperDrive suffers from an elevation of privileges vulnerability
which can be used by a simple authenticated user that can change the
executable file with a binary of choice. The vulnerability exist due
to the improper permissions, with the 'C' flag (Change) for 'Authenticated
Users' group.

Tested on: Microsoft Windows 7 Ultimate SP1 (EN)
Microsoft Windows 7 Professional SP1 (EN)
Java 1.8.0_60


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience


Advisory ID: ZSL-2016-5294
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5294.php


25.11.2015

--


C:\WEG\SuperDrive 7.0.0>cacls SuperDrive.exe
C:\WEG\SuperDrive 7.0.0\SuperDrive.exe BUILTIN\Administrators:F
NT AUTHORITY\SYSTEM:F
BUILTIN\Users:R
NT AUTHORITY\Authenticated Users:C


C:\WEG\SuperDrive 7.0.0>


C:\WEG\SuperDrive G2 12.0.0>cacls *.exe
C:\WEG\SuperDrive G2 12.0.0\SuperDriveG2.exe BUILTIN\Administrators:F
NT AUTHORITY\SYSTEM:F
BUILTIN\Users:R
NT AUTHORITY\Authenticated Users:C

C:\WEG\SuperDrive G2 12.0.0\unins000.exe BUILTIN\Administrators:F
NT AUTHORITY\SYSTEM:F
BUILTIN\Users:R
NT AUTHORITY\Authenticated Users:C


C:\WEG\SuperDrive G2 12.0.0>

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