critical
9.8
CWE
287
Advisory Published
Updated

CVE-2023-1617: Improper Authentication Mechanism in B&R VC4 Visualization

First published: Fri Apr 14 2023(Updated: )

Improper Authentication vulnerability in B&R Industrial Automation B&R VC4 (VNC-Server modules).  This vulnerability may allow an unauthenticated network-based attacker to bypass the authentication mechanism of the VC4 visualization on affected devices. The impact of this vulnerability depends on the functionality provided in the visualization. This issue affects B&R VC4: from 3.* through 3.96.7, from 4.0* through 4.06.7, from 4.1* through 4.16.3, from 4.2* through 4.26.8, from 4.3* through 4.34.6, from 4.4* through 4.45.1, from 4.5* through 4.45.3, from 4.7* through 4.72.9.

Credit: cybersecurity@ch.abb.com

Affected SoftwareAffected VersionHow to fix
B&R Industrial Automation VC4<3.96.8
B&R Industrial Automation VC4>=4.0.0<=4.06.4
B&R Industrial Automation VC4>=4.10.0<=4.16.3
B&R Industrial Automation VC4>=4.20.0<=4.26.8
B&R Industrial Automation VC4>=4.30.0<4.34.7
B&R Industrial Automation VC4>=4.40.0<=4.45.1
B&R Industrial Automation VC4>=4.50.0<=4.53.0
B&R Industrial Automation VC4>=4.70.0<4.73.0

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Reference Links

Frequently Asked Questions

  • What is CVE-2023-1617?

    CVE-2023-1617 is an improper authentication vulnerability in B&R Industrial Automation B&R VC4 (VNC-Server modules) that allows an unauthenticated attacker to bypass the authentication mechanism of the VC4 visualization on affected devices.

  • What is the severity of CVE-2023-1617?

    The severity of CVE-2023-1617 is critical with a severity value of 9.8.

  • How does CVE-2023-1617 impact affected devices?

    The impact of CVE-2023-1617 depends on the specific configuration and usage of the VC4 visualization on the affected devices.

  • Which software version of B&R VC4 is affected by CVE-2023-1617?

    B&R VC4 versions up to and including 4.73.0 are affected by CVE-2023-1617.

  • How can I fix CVE-2023-1617?

    To fix CVE-2023-1617, it is recommended to update B&R VC4 to a version that is not affected by the vulnerability.

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