critical
10
CWE
77
Advisory Published
Updated

CVE-2021-35978: Command Injection

First published: Fri Dec 10 2021(Updated: )

An issue was discovered in Digi TransPort DR64, SR44 VC74, and WR. The ZING protocol allows arbitrary remote command execution with SUPER privileges. This allows an attacker (with knowledge of the protocol) to execute arbitrary code on the controller including overwriting firmware, adding/removing users, disabling the internal firewall, etc.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Digi Transport Dr64 Firmware<=5.2.4.9
Digi TransPort DR64
Digi Transport Sr44 Firmware
Digi Transport Sr44
Digi Transport Vc74 Firmware<=5.2.4.9
Digi Transport Vc74
Digi Transport Wr11 Firmware<=8.2.1.3
Digi Transport Wr11
Digi Transport Wr11 Xt Firmware<=8.2.1.3
Digi Transport Wr11 Xt
Digi Transport Wr21 Firmware<=8.2.1.3
Digi TransPort WR21
Digi Transport Wr31 Firmware<=8.2.1.3
Digi Transport Wr31
Digi Transport Wr41 Firmware>=5.0.0.0<=5.2.4.6
Digi Transport Wr41 Firmware>=6.0.0.0<=6.1.3.5
Digi Transport Wr41 Firmware>=8.0.0.0<=8.3.1.2
Digi Transport Wr41
Digi Transport Wr44 Firmware<=8.3.1.2
Digi Transport Wr44=v2

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-35978?

    CVE-2021-35978 is a vulnerability found in Digi TransPort DR64, SR44 VC74, and WR that allows arbitrary remote command execution with SUPER privileges.

  • How severe is CVE-2021-35978?

    CVE-2021-35978 has a severity rating of 9.8 (Critical).

  • Which software versions are affected by CVE-2021-35978?

    Digi TransPort DR64 Firmware versions up to and including 5.2.4.9, and Digi Transport VC74 Firmware versions up to and including 5.2.4.9 are affected.

  • How can an attacker exploit CVE-2021-35978?

    An attacker with knowledge of the ZING protocol can exploit CVE-2021-35978 to execute arbitrary code on the controller including overwriting firmware or adding/removing users.

  • Where can I find more information about CVE-2021-35978?

    You can find more information about CVE-2021-35978 on the Digi website and in the vulnerability disclosure document available at the provided GitHub link.

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