What is CVE-2018-3954?

CVE-2018-3954 is a vulnerability in the Linksys ESeries line of routers that allows for OS command injection.

Which routers are affected by CVE-2018-3954?

Devices in the Linksys ESeries line of routers, specifically Linksys E1200 (Firmware Version 2.0.09) and Linksys E2500 (Firmware Version 3.0.04), are affected by CVE-2018-3954.

What is the severity of CVE-2018-3954?

CVE-2018-3954 has a severity rating of 7.2 out of 10, making it a critical vulnerability.

How can I fix CVE-2018-3954?

To fix CVE-2018-3954, it is recommended to update the firmware of affected devices to a version that addresses the vulnerability.

Where can I find more information about CVE-2018-3954?

You can find more information about CVE-2018-3954 at https://talosintelligence.com/vulnerability_reports/TALOS-2018-0625.

Vulnerability/
CVE-2018-3954

critical

CWE

78 77

17/10/2018

17/9/2024

CVE-2018-3954: OS Command Injection

First published: Wed Oct 17 2018(Updated: )

Devices in the Linksys ESeries line of routers (Linksys E1200 Firmware Version 2.0.09 and Linksys E2500 Firmware Version 3.0.04) are susceptible to OS command injection vulnerabilities due to improper filtering of data passed to and retrieved from NVRAMData entered into the 'Router Name' input field through the web portal is submitted to apply.cgi as the value to the 'machine_name' POST parameter. When the 'preinit' binary receives the SIGHUP signal it enters a code path that calls a function named 'set_host_domain_name' from its libshared.so shared object.

Credit: talos-cna@cisco.com

Affected Software	Affected Version	How to fix
Linksys E1200 Firmware	=2.0.09
Linksys E1200
Linksys E2500 Firmware	=3.0.04
Linksys E2500

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Reference Links

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0625

Frequently Asked Questions

What is CVE-2018-3954?
CVE-2018-3954 is a vulnerability in the Linksys ESeries line of routers that allows for OS command injection.
Which routers are affected by CVE-2018-3954?
Devices in the Linksys ESeries line of routers, specifically Linksys E1200 (Firmware Version 2.0.09) and Linksys E2500 (Firmware Version 3.0.04), are affected by CVE-2018-3954.
What is the severity of CVE-2018-3954?
CVE-2018-3954 has a severity rating of 7.2 out of 10, making it a critical vulnerability.
How can I fix CVE-2018-3954?
To fix CVE-2018-3954, it is recommended to update the firmware of affected devices to a version that addresses the vulnerability.
Where can I find more information about CVE-2018-3954?
You can find more information about CVE-2018-3954 at https://talosintelligence.com/vulnerability_reports/TALOS-2018-0625.

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agent/last-modified-date
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vendor/linksys
canonical/linksys e1200 firmware
version/linksys e1200 firmware/2.0.09
canonical/linksys e1200
canonical/linksys e2500 firmware
version/linksys e2500 firmware/3.0.04
canonical/linksys e2500

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