|2016-04-05||HMI||Rockwell (Allen-Bradley)||Ivan Sanchez - Nullcode Team||N/A||2016-2277||N/A||N/A||N/A|
# Rockwell Automation Integrated Architecture Builder Access Violation Memory Error
Ivan Sanchez from Nullcode Team has identified an access violation memory error in Rockwell Automation’s Integrated Architecture Builder (IAB) application. Rockwell Automation has produced a software update to mitigate this vulnerability.
### AFFECTED PRODUCTS
The following IAB versions are affected:
Integrated Architecture Builder, Versions 220.127.116.11 and earlier
Integrated Architecture Builder, Versions 18.104.22.168 and 22.214.171.124
A successful attack would allow an attacker to execute malicious code on the target computer at the same privilege level as the IAB tool.
Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation.
Rockwell Automation, which is a US-based company, provides industrial automation control and information products worldwide across a wide range of industries.
The affected product, IAB, is used to configure Logix-based automation systems used in industrial control systems. According to Rockwell Automation, IAB is deployed across several sectors including Critical Manufacturing, Energy, and Water and Wastewater Systems. Rockwell Automation estimates that the product is used globally.
### VULNERABILITY CHARACTERIZATION
# VULNERABILITY OVERVIEW
IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER
Execution of a maliciously crafted or altered project file can allow the execution of unknown code on the affected computer. If successful, such unknown code will run at the same privilege level as the user who is logged into the machine.
CVE-2016-2277 has been assigned to this vulnerability. A CVSS v3 base score of 6.3 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H).
### VULNERABILITY DETAILS
This vulnerability is not exploitable remotely and cannot be exploited without user interaction. The exploit is only triggered when a local user runs the vulnerable application and loads the malformed project file.
# EXISTENCE OF EXPLOIT
No known public exploits specifically target this vulnerability.
Crafting a working exploit for this vulnerability would be difficult. Social engineering is required to convince the user to introduce or replace project files. Additional user interaction is needed to load the malformed file. This decreases the likelihood of a successful exploit.
Rockwell Automation recommends users upgrade to the newest available software versions to mitigate the threat of this vulnerability. They also recommend the following steps:
* Do not open untrusted project files with IAB.exe.
* Upgrade Integrated Architecture Builder V126.96.36.199 and earlier to either V188.8.131.52+ or V184.108.40.206+ (available now) using Current Program Updater. Current Program Updater is a program that is installed on the user’s computer when Integrated Architecture Builder is installed.
* For additional information, please refer to the user guide which is built into the Current Program Updater application.
* Run all software as “User,” not as an “Administrator,” to minimize the impact of malicious code on the infected system.
* Use trusted software, software patches, antivirus/antimalware programs and interact only with trusted web sites and attachments.
* Employ training and awareness programs to educate users on the warning signs of a phishing or social engineering attack.
* Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet.
* Locate control system networks and devices behind firewalls, and isolate them from the business network.
* Use of Microsoft AppLocker or other similar whitelisting applications can help mitigate risk. Information on using AppLocker with Rockwell Automation products is available at https://rockwellautomation.custhelp.com/app/answers/detail/a_id/546989(link is external).
Rockwell Automation’s security notification is available at the following URL, with a valid account:
For more information on this vulnerability and more detailed mitigation instructions, please see Rockwell Automation’s public security web page at: