high
7.8
CWE
20
Advisory Published
Updated

CVE-2021-34570: Phoenix Contact: DoS for PLCnext Control devices in versions prior to 2021.0.5 LTS

First published: Tue Aug 03 2021(Updated: )

Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.

Credit: info@cert.vde.com

Affected SoftwareAffected VersionHow to fix
Phoenixcontact Plcnext Technology Starterkit Firmware<2021.0.5
Phoenixcontact Plcnext Technology Starterkit
Phoenixcontact Axc F 2152 Starterkit Firmware<2021.0.5
Phoenixcontact Axc F 2152 Starterkit
Phoenixcontact Rfc 4072s Firmware<2021.0.5
Phoenixcontact Rfc 4072s
Phoenixcontact Axc F 3152 Firmware<2021.0.5
Phoenixcontact Axc F 3152
Phoenixcontact Axc F 1152 Firmware<2021.0.5
Phoenixcontact Axc F 1152
Phoenixcontact Axc F 2152 Firmware<2021.0.5
Phoenixcontact Axc F 2152

Remedy

https://cert.vde.com/en/advisories/VDE-2021-029/

Remedy

Phoenix Contact recommends affected users to upgrade to the current Firmware 2021.0.5 LTS or higher which fixes this vulnerability.

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is CVE-2021-34570?

    CVE-2021-34570 is a vulnerability that affects multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS.

  • How severe is CVE-2021-34570?

    CVE-2021-34570 has a severity rating of 7.5 (High).

  • Which software versions are affected by CVE-2021-34570?

    Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are affected by CVE-2021-34570.

  • How can CVE-2021-34570 be exploited?

    CVE-2021-34570 can be exploited through specially crafted JSON requests.

  • Is there a fix for CVE-2021-34570?

    Updating the affected Phoenix Contact PLCnext control devices to version 2021.0.5 LTS will fix CVE-2021-34570.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203