CVE-2021-27471

Rockwell Automation Connected Components Workbench Path Traversal

Description

The parsing mechanism that processes certain file types does not provide input sanitization for file paths. This may allow an attacker to craft malicious files that, when opened by Rockwell Automation Connected Components Workbench v12.00.00 and prior, can traverse the file system. If successfully exploited, an attacker could overwrite existing files and create additional files with the same permissions of the Connected Components Workbench software. User interaction is required for this exploit to be successful.

Remediation

Solution:

  • Rockwell Automation recommends users of the affected software update to an available software revision (Connected Components Workbench v13.00.00 or later) that addresses the associated risk.

Workaround:

  • Users who are unable to update are directed towards risk mitigation strategies provided below, and are encouraged, when possible, to combine these with Rockwell Automation’s general security guidelines to employ multiple strategies simultaneously. If upgrade is not possible, Rockwell Automation recommends deploying 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 .ccwarc, files with Connected Components Workbench. Employ training and awareness programs to educate users on the warning signs of a phishing or social engineering attack. Use of Microsoft AppLocker or other similar allow list applications can help mitigate risk. Information on using AppLocker with Rockwell Automation products is available at KnowledgeBase Article QA17329 (login required). 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. For more information, please see the industrial security advisory from Rockwell Automation.

Category

7.7
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory custhelp.com
Affected: Rockwell Automation Connected Components Workbench
Published at:
Updated at:

References

Link Tags
https://www.cisa.gov/uscert/ics/advisories/icsa-21-133-01 third party advisory us government resource
https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1131435 permissions required vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-27471?
CVE-2021-27471 has been scored as a high severity vulnerability.
How to fix CVE-2021-27471?
To fix CVE-2021-27471: Rockwell Automation recommends users of the affected software update to an available software revision (Connected Components Workbench v13.00.00 or later) that addresses the associated risk.
Is CVE-2021-27471 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-27471 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-27471?
CVE-2021-27471 affects Rockwell Automation Connected Components Workbench.
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