PoC Index

CVE-2018-3954

HIGH 9.0EPSS 3.4%

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.

CVSS v3.1
7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v3.0
7.2 HIGHCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
9.0 HIGHAV:N/AC:L/Au:S/C:C/I:C/A:C
EPSS
3.38% chance of exploitation in the next 30 days, 88th percentile
Published
2018-10-17
Updated
2024-09-17

Proof-of-concept exploits (1)

References

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