[UNIX] KorWeblog Directory Traversal Vulnerability

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To: list@securiteam.com
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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