MyBB <1.8.11 Directory Traversal

2017.04.12
Credit: Zhiyang Zeng
Risk: Medium
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-22

################################# Description: ============ product:MyBB Homepage:https://mybb.com/ vulnerable version:<1.8.11 Severity:Low risk =============== Proof of Concept: ============= 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! ============ Fixed: ============ 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/ ============= Best regards, Zhiyang Zeng of Tencent security platform department


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