iniNet SpiderControl SCADA Web Server Service 2.02 Insecure File Permissions

Title: iniNet SpiderControl SCADA Web Server Service 2.02 Insecure File Permissions
Advisory ID: ZSL-2015-5284
Type: Local
Impact: Privilege Escalation
Risk: (2/5)
Release Date: 06.12.2015
Summary
Modular and automated engineering is provided for HMI and SCADA. The tools are developed to join a large range of engineering modules together quickly. We modularize our software, as the mechanics of a system are modularized today. Easy to visualize with a few clicks.
Description
SpiderControl SCADA Web Server Service suffers from an elevation of privileges vulnerability which can be used by a simple 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 'Everyone' and 'Authenticated Users' group making the entire directory 'WWW' and its files and sub-dirs world-writable.
Vendor
iniNet Solutions GmbH - http://www.spidercontrol.net
Affected Version
6.30.04 (Build 6300400)
Tested On
Microsoft Windows 7 Professional SP1 (EN)
Microsoft Windows 7 Ultimate SP1 (EN)
Vendor Status
[22.10.2015] Vulnerability discovered.
[11.11.2015] Vendor contacted.
[11.11.2015] Vendor responds asking more details.
[11.11.2015] Sent details to the vendor.
[15.11.2015] Asked vendor for status update.
[16.11.2015] Vendor states issues have no impact for customers because they use it in their protected environment.
[06.12.2015] Public security advisory released.
PoC
ininetscsws_insecureperm.txt
Credits
Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>
References
[1] https://www.exploit-db.com/exploits/38903/
[2] https://packetstormsecurity.com/files/134670
[3] https://cxsecurity.com/issue/WLB-2015120053
[4] https://exchange.xforce.ibmcloud.com/vulnerabilities/108567
Changelog
[06.12.2015] - Initial release
[08.12.2015] - Added reference [1], [2], [3] and [4]
Contact
Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk