// For flags

CVE-2018-3954

 

Severity Score

7.2
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Los dispositivos de la línea de routers Linksys ESeries (Linksys E1200 con versión del firmware 2.0.09 y Linksys E2500 con versión del firmware 3.0.04) son susceptibles a vulnerabilidades de inyección de comandos del sistema operativo debido al filtrado incorrecto de datos pasados y recuperados desde los datos NVRAM introducidos en el campo de entrada "Router Name" mediante el portal web y enviados a apply.cgi como el valor del parámetro POST "machine_name". Cuando el binario "preinit" recibe la señal SIGHUP, introduce una ruta de código que llama a una función denominada "set_host_domain_name" desde su objeto compartido en libshared.so.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-01-02 CVE Reserved
  • 2018-10-17 CVE Published
  • 2024-07-31 EPSS Updated
  • 2024-09-17 CVE Updated
  • 2024-09-17 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC
References (1)
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linksys
Search vendor "Linksys"
E1200 Firmware
Search vendor "Linksys" for product "E1200 Firmware"
2.0.09
Search vendor "Linksys" for product "E1200 Firmware" and version "2.0.09"
-
Affected
in Linksys
Search vendor "Linksys"
E1200
Search vendor "Linksys" for product "E1200"
--
Safe
Linksys
Search vendor "Linksys"
E2500 Firmware
Search vendor "Linksys" for product "E2500 Firmware"
3.0.04
Search vendor "Linksys" for product "E2500 Firmware" and version "3.0.04"
-
Affected
in Linksys
Search vendor "Linksys"
E2500
Search vendor "Linksys" for product "E2500"
--
Safe