SSD Advisory – Coredy CX-E120 Repeater Multiple Vulnerabilities

[Maor Shwartz <maors () beyondsecurity com>]

SSD Advisory – Coredy CX-E120 Repeater Multiple Vulnerabilities

Full report: https://blogs.securiteam.com/index.php/archives/3556
Twitter: @SecuriTeam_SSD
Weibo: SecuriTeam_SSD

Vulnerabilities Summary
The following advisory describes two (2) vulnerabilities found in Coredy
CX-E120 Repeater.

The Coredy CX-E120 WiFi Range Extender is “a network device with
multifunction, which can be using for increasing the distance of a WiFi
network by boosting the existing WiFi signal and enhancing the overall
signal quality over long distances. An extender repeats the signals from an
existing WiFi router or access point.”

The vulnerabilities found are:

Unauthenticated Root Password Reset
Unauthenticated Remote Command Execution

Credit
An independent security researcher, Corben Douglas (@sxcurity), has
reported this vulnerability to Beyond Security’s SecuriTeam Secure
Disclosure program

Vendor response
Coredy has released patches to address these vulnerabilities
(WN575A3-A-RPTA3-75W.M4300.01.GD.2017Nov22-WEBC.bin).

Vulnerabilities details
Unauthenticated Root Password Reset
An unauthenticated user is able to send a POST request to /cgi-bin/adm.cgi
which can then be used to reset the root password with parameter
page=sysAdm, username=,
and the values of the new password: newpass= and confpass=.

Remote Command Execution
An unauthenticated user is able to send a POST request to /cgi-bin/adm.cgi
with the following parameters: page=sysCMD, SystemCommandSubmit=Apply, and
command= with the command you run to run. The input is passed as root cmd
command for execution.


--
Thanks
Maor Shwartz
Beyond Security
GPG Key ID: 6D273779F52A9FC2

Attachment: SSD Advisory – Coredy CX-E120 Repeater Multiple Vulnerabilities.pdf
Description:

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