[UNIX] Postnuke Subjects Module SQL Injection Vulnerability

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To: list@securiteam.com
Date: 14 Sep 2004 14:21:28 +0200

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  Postnuke Subjects Module SQL Injection Vulnerability
------------------------------------------------------------------------

SUMMARY

The <http://home.postnuke.ru> Subjects "Module is designed for structured
store & display text content with a possibility to store content in file
on the disc. Probably, the best one for converting existing based on HTML
pages site to PostNuke."

Several SQL injection attacks are possible through several variables
passed to the module's code.

DETAILS

Vulnerable Systems:
 * Postnuke Subjects module version 2.0

The vulnerable parameters are pageid, subid and catid which are passed
directly to the SQL statement thus paving the way for an easily
exploitable SQL injection vulnerability. Examples are shown below:
  /index.php?module=subjects&func=listpages&subid=[SQL]
  /index.php?module=subjects&func=viewpage&pageid=[SQL]
  /index.php?module=subjects&func=listcat&catid=[SQL]

Workaround
The only known workaround as of this time is to remove the module from the
system due to the critical nature of the vulnerability in question.

ADDITIONAL INFORMATION

The information has been provided by <mailto:security@criolabs.net>
Criolabs.

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