Summary
On June 8, 2021, Rockwell Automation disclosed multiple vulnerabilities in its ISaGRAF Workbench and ISaGRAF Runtime products. Multiple vendors, including Schneider Electric, embed ISaGRAF in their offers.
ISaGRAF Workbench is used to program applications for embedded devices using IEC 61131-3 languages and may be incorporated into larger programming and configuration tools. The ISaGRAF Runtime module executes the process control code created in ISaGRAF Workbench on embedded devices.
If successfully exploited, bad actors could execute a range of actions, including accessing and disclosing sensitive information, privilege escalation, and in some cases remote code execution.
Customers should immediately ensure they have implemented cybersecurity best practices across their operations to protect themselves from possible exploitation of these vulnerabilities. Where appropriate, this includes locating their industrial systems and remotely accessible devices behind firewalls; installing physical controls to prevent unauthorized access; preventing mission-critical systems and devices from being accessed from outside networks; and following the mitigations and general security recommendations below.
For additional information and support, please contact your Schneider Electric sales or service representative or Schneider Electric’s Customer Care Center.
Subscribe to the Schneider Electric security notification service to be informed of critical
updates to this notification, including information on affected products and remediation plans:
https://www.se.com/ww/en/work/support/cybersecurity/security-notifications.jsp
November 2022 Update: Talus T4e and T4c RTUs were added as affected products along with a mitigation.
March 2023 Update: A remediation is available for SCD2200 product.
Vulnerabilities 5
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Critical 9.1
Rockwell Automation ISaGRAF5 Runtime Relative Path Traversal
Some commands used by the Rockwell Automation ISaGRAF Runtime Versions 4.x and 5.x eXchange Layer (IXL) protocol perform various file operations in the file system. Since the parameter pointing to the file name is not checked for reserved characters, it is po…
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High 7.8
Rockwell Automation ISaGRAF5 Runtime Unprotected Storage of Credentials
Rockwell Automation ISaGRAF Runtime Versions 4.x and 5.x stores the password in plaintext in a file that is in the same directory as the executable file. ISaGRAF Runtime reads the file and saves the data in a variable without any additional modification. A lo…
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High 7.5
Rockwell Automation ISaGRAF5 Runtime Cleartext Transmission of Sensitive Information
ISaGRAF Workbench communicates with Rockwell Automation ISaGRAF Runtime Versions 4.x and 5.x using TCP/IP. This communication protocol provides various file system operations, as well as the uploading of applications. Data is transferred over this protocol un…
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Medium 6.7
Rockwell Automation ISaGRAF5 Runtime Uncontrolled Search Path Element
Rockwell Automation ISaGRAF Runtime Versions 4.x and 5.x searches for and loads DLLs as dynamic libraries. Uncontrolled loading of dynamic libraries could allow a local, unauthenticated attacker to execute arbitrary code. This vulnerability only affects ISaGR…
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Medium 5.3
Rockwell Automation ISaGRAF5 Runtime Use of Hard-coded Cryptographic Key
Rockwell Automation ISaGRAF Runtime Versions 4.x and 5.x includes the functionality of setting a password that is required to execute privileged commands. The password value passed to ISaGRAF Runtime is the result of encryption performed with a fixed key valu…
Revision history
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#8.0.0
Corrected Versions for Easergy C5 & MiCOM C264 and Added CVSS Details for Related CVEs.
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#7.0.0
New mitigations for Saitel DP and Saitel DR are available for download (page 5).
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#6.0.0
New mitigations for the PowerLogic T300, MiCOM C264 D7.21 (or later) OR Easergy C5 1.1.6 (or later), PACiS GTW, and EPAS GTW are available for download.
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#5.0.0
A remediation is available for SCD2200 product (page 3).
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#4.0.0
Talus T4e and T4c RTUs were added as affected products along with a mitigation
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#3.0.0
Added remediations for SCADAPack 300E RTU, SCADAPack 53xE RTU, and SCADAPack Workbench
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#2.0.0
Added remediations for SAGE RTU C3414 CPU, C3413 CPU and C3412 CPU
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#1.0.0
Original Release
References
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ISaGRAF Vulnerabilities - SEVD-2021-159-04 PDF Version
https://download.schneider-electric.com/files?p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2021-159-04_ISaGRAF_Security_Notification.pdf
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Recommended Cybersecurity Best Practices
https://www.se.com/us/en/download/document/7EN52-0390/