[UNIX] KorWeblog Directory Traversal Vulnerability

From: SecuriTeam (support_at_securiteam.com)
Date: 11/25/04

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Date: 25 Nov 2004 14:10:06 +0200

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      KorWeblog Directory Traversal Vulnerability
    ------------------------------------------------------------------------

    SUMMARY

     <http://weblog.kldp.org> KorWeblog is a weblog application used by many
    Korean Linux users.

    A directory traversal vulnerability has been found in KorWeblog that
    allows a malicious user to map the directory structure on the server
    system.

    DETAILS

    Vulnerable Systems:
     * KorWeblog version 1.3 and prior

    An input validation error allows a malicious user to exploit this
    condition in order to map directory names on the server system. KorWeblog
    has a function to insert image icons when users post replies. This
    function is implemented in viewimg.php. The function doesn't check user
    input correctly, so malicious attackers can modify the $path variable and
    can get file lists of a target directory.

    Example:
    http://[victim]/viewimg.php?path=images.d/face/../../../../../../../&form=Com&var=faceicon

    Patch Availability:
    A patch for this vulnerability can be found at:
     
    <http://kldp.net/tracker/index.php?func=detail&aid=300515&group_id=13&atid=300013> http://kldp.net/tracker/index.php?func=detail&aid=300515&group_id=13&atid=300013

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:advisory@stgsecurity.com>
    SSR Team.

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