CVE-2018-3954

Public Exploit

Description

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.

Category

7.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 7.96% Top 10%
Third-Party Advisory talosintelligence.com
Affected: Linksys ESeries E1200
Affected: Linksys ESeries E2500
Published at:
Updated at:

References

Link Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0625 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2018-3954?
CVE-2018-3954 has been scored as a high severity vulnerability.
How to fix CVE-2018-3954?
To fix CVE-2018-3954, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-3954 being actively exploited in the wild?
It is possible that CVE-2018-3954 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~8% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-3954?
CVE-2018-3954 affects Linksys ESeries E1200, Linksys ESeries E2500.
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