AVEVA Hotfix for Stack-Based Buffer Overflow

Thursday, July 19, 2018 @ 01:07 PM gHale

AVEVA Software, LLC (AVEVA) has a hotfix to handle a stack-based buffer overflow in its InduSoft Web Studio and InTouch Machine Edition, according to a report with NCCIC.

The listed products are vulnerable only if the TCP/IP Server Task is enabled. A remote attacker could send a carefully crafted packet during a tag, alarm, or event related action such as read and write, which may allow remote code execution. Tenable Research reported this vulnerability to AVEVA.

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The following versions of InduSoft Web Studio and InTouch Machine Edition, an HMI, suffer from the remotely exploitable vulnerability:
• InduSoft Web Studio v8.1 and v8.1SP1
• InTouch Machine Edition v2017 8.1 and v2017 8.1 SP1

In the vulnerability, a remote user could send a carefully crafted packet to exploit a stack-based buffer overflow vulnerability during tag, alarm, or event related actions such as read and write, with potential for code to be executed.

CVE-2018-10620 is the case number assigned to this vulnerability, which has a CVSS v3 base score of 9.8.

The product sees use mainly in the commercial facilities, critical manufacturing, energy, transportation systems, and water and wastewater systems sectors. It also sees action on a global basis.

No known public exploits specifically target this vulnerability. However, an attacker with low skill level could leverage the vulnerability.

Users of InduSoft Web Studio v8.1 SP1 are affected and should apply InduSoft Web Studio Hotfix 81.1.00.08 as soon as possible. Users of InduSoft Web Studio v8.1 are also affected and should first upgrade to InduSoft Web Studio v8.1 SP1 and then apply the hotfix. 

Users of InTouch Machine Edition 2017 v8.1 SP1 are affected and should apply InTouch Machine Edition Hotfix 81.1.00.08 as soon as possible. Users of InTouch Machine Edition 2017 v8.1 are also affected and should first upgrade to InTouch Machine Edition 2017 v8.1 SP1 and then apply the hotfix. 

Software security updates:
Update 1
Update 2 (login required)

To identify which version of InduSoft Web Studio or InTouch Machine Edition you have installed:
• Windows Desktop or Server operating system: Navigate to Windows Programs and Features, locate the “InduSoft Web Studio” or “InTouch Machine Edition” entries to review the displayed installed version.
• On a Windows Embedded operating system: navigate to the Bin folder in the installation location of InduSoft Web Studio or InTouch Machine Edition and open the file “CEView.ini.” The installed version can be observed from the “version=*.*.*” attribute within the file.

Click here for AVEVA’s security bulletin LFSEC00000128.



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