CVE-2021-22281

Zip Slip Vulnerability in B&R Automation Studio Project Import

Description

: Relative Path Traversal vulnerability in B&R Industrial Automation Automation Studio allows Relative Path Traversal.This issue affects Automation Studio: from 4.0 through 4.12.

Remediation

Workaround:

  • B&R recommends the following specific workarounds and mitigations: Open only B&R Automation Studio project files from trusted source. Use encrypted export of B&R Automation Studio project files, thus only allowing access to legitimate users. Protect locations where B&R Automation Studio projects are stored from unauthorized access. This includes PLCs, when using the feature to back up project source files on target. Do not run B&R Automation Studio in elevated mode. Make sure, that Windows User Access Control (UAC) is enabled. Verify integrity of B&R Automation Studio project files, which are exchanged via potentially insecure channels In general, B&R recommends implementing the Cyber Security guidelines

Categories

6.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.12%
Vendor Advisory br-automation.com
Affected: B&R Industrial Automation Automation Studio
Published at:
Updated at:

References

Link Tags
https://www.br-automation.com/fileadmin/2021-11_ZipSlip_Vulnerability_in_Automation_Studio_Project_Import-b90d2f42.pdf vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-22281?
CVE-2021-22281 has been scored as a medium severity vulnerability.
How to fix CVE-2021-22281?
As a workaround for remediating CVE-2021-22281: B&R recommends the following specific workarounds and mitigations: Open only B&R Automation Studio project files from trusted source. Use encrypted export of B&R Automation Studio project files, thus only allowing access to legitimate users. Protect locations where B&R Automation Studio projects are stored from unauthorized access. This includes PLCs, when using the feature to back up project source files on target. Do not run B&R Automation Studio in elevated mode. Make sure, that Windows User Access Control (UAC) is enabled. Verify integrity of B&R Automation Studio project files, which are exchanged via potentially insecure channels In general, B&R recommends implementing the Cyber Security guidelines
Is CVE-2021-22281 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-22281 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-2021-22281?
CVE-2021-22281 affects B&R Industrial Automation Automation Studio.
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