CVE-2018-3954

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.

Score

CVSS 3.1 7.2 High

Status

Modified - talos-cna@cisco.com

Published

2018-10-17

Last modified

2024-09-17

Weaknesses

CWE-78

Affected products

• E1200 Firmware (Linksys)
• E2500 Firmware (Linksys)
• Eseries E1200 (Linksys)
• Eseries E2500 (Linksys)

References

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