CWE
306
Advisory Published
Updated

CVE-2021-20998: WAGO: Managed Switches: Unauthorized creation of user accounts

First published: Thu May 13 2021(Updated: )

In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.

Credit: info@cert.vde.com

Affected SoftwareAffected VersionHow to fix
Wago 0852-0303 Firmware<=1.2.3.s0
Wago 0852-0303
Wago 0852-1305 Firmware<=1.1.7.s0
Wago 0852-1305
Wago 0852-1505 Firmware<=1.1.6.s0
Wago 0852-1505
Wago 0852-1305\/000-001 Firmware<=1.0.4.s0
Wago 0852-1305\/000-001
Wago 0852-1505\/000-001 Firmware<=1.0.4.s0
Wago 0852-1505\/000-001

Remedy

The Web-Based Management is only needed during installation and commissioning, not during normal operations. It is recommended to disable the web server after commissioning. The Command Line Interface (CLI) is an alternative for commissioning the device. This is the easiest and securest way to protect your device from the listed vulnerabilities. Regardless of the action described above, the vulnerabilities are fixed with following firmware releases: Item number [FW version] 0852-0303 (HW < 3)* [V1.2.5.S0] Detailed information about the hardware version is described in the installation guide. 0852-0303 (HW >=3)* [V1.2.3.S1] Detailed information about the hardware version is described in the installation guide. 0852-1305 [V1.1.8.S0] 0852-1505 [V1.1.7.S0] 0852-1305/000-001 [V1.1.4.S0] 0852-1505/000-001 [V1.1.4.S0]

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.

Frequently Asked Questions

  • What is vulnerability CVE-2021-20998?

    Vulnerability CVE-2021-20998 is a vulnerability found in multiple managed switches by WAGO, which allows the creation of users without authorization and with specially crafted packets.

  • What is the severity of CVE-2021-20998?

    The severity of vulnerability CVE-2021-20998 is rated as critical with a severity value of 9.8.

  • Which software versions are affected by CVE-2021-20998?

    The software versions affected by vulnerability CVE-2021-20998 are: Wago 0852-0303 Firmware (up to version 1.2.3.s0), Wago 0852-1305 Firmware (up to version 1.1.7.s0), Wago 0852-1505 Firmware (up to version 1.1.6.s0), Wago 0852-1305/000-001 Firmware (up to version 1.0.4.s0), and Wago 0852-1505/000-001 Firmware (up to version 1.0.4.s0).

  • How can the vulnerability CVE-2021-20998 be exploited?

    Vulnerability CVE-2021-20998 can be exploited by sending specially crafted packets to the affected managed switches by WAGO.

  • Is Wago 0852-0303 vulnerable to CVE-2021-20998?

    Yes, Wago 0852-0303 is vulnerable to CVE-2021-20998 up to version 1.2.3.s0.

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