When opening a malicious solution file provided by an attacker, the application suffers from an XML external entity vulnerability due to an unsafe call within a dynamic link library file. An attacker could exploit this to pass data from local files to a remote web server, leading to a loss of confidentiality.
When opening a malicious solution file provided by an attacker, the application suffers from an XML external entity vulnerability due to an unsafe call within a dynamic link library file. An attacker could exploit this to pass data from local files to a remote web server, leading to a loss of confidentiality.
Description: CWE-611 Improper Restriction of XML External Entity Reference ('XXE')
Metrics
Version
Base score
Base severity
Vector
3.1
5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Version:3.1
Base score:5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Metrics Other Info
Impacts
CAPEC ID
Description
Solutions
Rockwell Automation encourages users to update to the available software revisions below:
Connected Component Workbench: Update to v13.00
ISaGRAF Workbench: For now, use mitigations listed until a patch is released. More mitigation actions are planned.
Safety Instrumented Systems Workstation: Update to v1.2
Configurations
Workarounds
If an upgrade is not possible or available, users should apply the following mitigations:
Run Connected Components Workbench as a User, not as an Administrator, to minimize the impact of malicious code on the infected system.
Do not open untrusted files with Connected Component Workbench, ISaGRAF, SISW. Employ training and awareness programs to educate users on the warning signs of a phishing or social engineering attack.
Use Microsoft AppLocker or other similar allow list application to help mitigate risk. Information on using AppLocker with Rockwell Automation products is available at KnowledgeBase Article QA17329
Ensure the least-privilege user principle is followed, and user/service account access to shared resources (such as a database) is only granted with a minimum number of rights as needed.
Exploits
Credits
kimiya of Trend Micro’s Zero Day Initiative reported this vulnerability to CISA.
When opening a malicious solution file provided by an attacker, the application suffers from an XML external entity vulnerability due to an unsafe call within a dynamic link library file. An attacker could exploit this to pass data from local files to a remote web server, leading to a loss of confidentiality.