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Automated Logic WebCTRL 6.1 Path Traversal Arbitrary File Write

Medium
Advisory ID
ZSL-2017-5430
Release Date
22 August 2017
Vendor
Automated Logic Corporation - http://www.automatedlogic.com
Affected Version
ALC WebCTRL, SiteScan Web 6.1 and prior, ALC WebCTRL, i-Vu 6.0 and prior, ALC WebCTRL, i-Vu, SiteScan Web 5.5 and prior, ALC WebCTRL, i-Vu, SiteScan Web 5.2 and prior, Note: Current supported versions are 6.5, 6.1 and 6.0
CVE
CVE-2017-9640
Tested On
Microsoft Windows 7 Professional (6.1.7601 Service Pack 1 Build 7601), Apache-Coyote/1.1, Apache Tomcat/7.0.42, CJServer/1.1, Java/1.7.0_25-b17, Java HotSpot Server VM 23.25-b01, Ant 1.7.0, Axis 1.4, Trove 2.0.2, Xalan Java 2.4.1, Xerces-J 2.6.1
Summary

WebCTRL®, Automated Logic's web-based building automation system, is known for its intuitive user interface and powerful integration capabilities. It allows building operators to optimize and manage all of their building systems - including HVAC, lighting, fire, elevators, and security - all within a single HVAC controls platform. It's everything they need to keep occupants comfortable, manage energy conservation measures, identify key operational problems, and validate the results.

Description

The vulnerability is triggered by an authenticated user that can use the manualcommand console in the management panel of the affected application. The ManualCommand() function in ManualCommand.js allows users to perform additional diagnostics and settings overview by using pre-defined set of commands. This can be exploited by using the echo command to write and/or overwrite arbitrary files on the system including directory traversal throughout the system.

Proof of Concept
webctrl_write.txtTXT
Disclosure Timeline
30.01.2017Vulnerability discovered.
27.03.2017Vendor contacted.
13.04.2017No response from the vendor.
14.04.2017ICS-CERT contacted.
17.04.2017ICS-CERT asks details to coordinate with the vendor.
20.04.2017Sent details to ICS-CERT.
21.04.2017ICS-CERT assigned ticket ID: ICS-VU-696479 to this issue.
19.05.2017ICS-CERT informs that the vendor has validated the issues and begun working on patch.
07.06.2017Asked ICS-CERT for status update.
26.06.2017ICS-CERT responded with vendor info: Vendor has created patch for 6.5 and currently working on patch for 6.1 and 6.0. Patch is available through their tech support organization as an individual patch.
04.07.2017Replied to ICS-CERT.
31.07.2017ICS-CERT informs that vendor is testing all patches and will shortly communicate to its dealers and installers. Developing an advisory for review and waiting for vendor on specific version details.
31.07.2017Replied to ICS-CERT.
31.07.2017ICS-CERT provides ZSL a draft advisory for review.
01.08.2017Replied to ICS-CERT.
04.08.2017Vendor has contacted ZSL with a request for more time.
04.08.2017Replied to the vendor and to ICS-CERT with new advisory release date proposal.
04.08.2017Vendor contacts ZSL for further discussions and planning.
04.08.2017Working with the vendor.
11.08.2017Vendor provides update, scheduling official release date to be 22nd of August.
18.08.2017Vendor provides mitigation details: ALC applications should always be installed and maintained in accordance with the guidelines found here: http://www.automatedlogic.com/Pages/Security.aspx. In addition ALC has released the following patches: WebCTRL 6.0, Cumulative Patch #13 WebCTRL 6.1, Cumulative Patch #7 WebCTRL 6.5, Cumulative Patch #7 + WS65_Security_Update2.update These patch releases may be obtained on the Automated Logic accounts website or calling Technical Support at 770-429-3002 i-Vu 6.0, Cumulative Patch #13 i-Vu 6.5, Cumulative Patch #7 + WS65_Security_Update2.update The patch release may be obtained by calling Technical Support at 800-277-9852 SiteScan Web Version 6.1, Cumulative Patch #7, and SiteScan Web Version 6.5, Cumulative Patch #7 + WS65_Security_Update2.update. These patches may be obtained by contacting Liebert Services at 1-800-543-2378. End users should contact their Carrier Controls Expert for i-Vu patches for support on installing the patches.
22.08.2017Coordinated public security advisory released.
Credits
Vulnerability discovered by Gjoko Krstic
References
[1]http://www.automatedlogic.com/Pages/Security_commitment.aspx
[3]https://ics-cert.us-cert.gov/advisories/ICSA-17-234-01
[4]https://nvd.nist.gov/vuln/detail/CVE-2017-9640
[5]http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9640
[6]https://www.exploit-db.com/exploits/42543/
[7]https://cxsecurity.com/issue/WLB-2017080165
[8]https://packetstormsecurity.com/files/143896
[9]http://www.securityweek.com/automated-logic-patches-flaws-building-automation-system
[10]https://www.auscert.org.au/bulletins/51482
[11]https://exchange.xforce.ibmcloud.com/vulnerabilities/130766
[12]http://www.securityfocus.com/bid/100452
Changelog
22.08.2017Initial release
23.08.2017Added reference [6], [7], [8], [9] and [10]
25.08.2017Added reference [11] and [12]