[UNIX] QuiXplorer Directory Traversal

From: SecuriTeam (support_at_securiteam.com)
Date: 08/16/04

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Date: 16 Aug 2004 10:16:05 +0200

    The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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      QuiXplorer Directory Traversal
    ------------------------------------------------------------------------

    SUMMARY

     <http://quixplorer.sourceforge.net/> QuiXplorer is "a simple, but fully
    functional, file manager for websites. QuiXplorer allows you to browse the
    files and directories on your web server (with PHP4) (without using an
    external FTP-client)".

    A vulnerability in the QuiXplorer allows remote attackers to retrieve
    arbitrary files that reside outside the bound HTML root directory.

    DETAILS

    Vulnerable Systems:
     * QuiXplorer version 2.3

    Immune Systems:
     * QuiXplorer version 2.3.1

    QuiXplorer does not apply filters on user inputs when a download is
    requested. The directory parameter is well filtered to check that it does
    not create a request that goes outside the authorized directories, but the
    item can contains parent directory references.

    Exploit:
    By requesting a URL such as:
    http://vuln/quixplorer_2_3/index.php?action=download&dir=&item=../../../../../../etc/passwd&order=name&srt=yes

    Solution:
    Upgrade to version 2.3.1 or newer.

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:cb-publicbox@ifrance.com>
    Cyrille Barthelemy.

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