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TITLE:
phpCMS "PHPCMS_INCLUDEPATH" File Inclusion Vulnerabilities

SECUNIA ADVISORY ID:
SA20573

VERIFY ADVISORY:
http://secunia.com/advisories/20573/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
phpCMS 1.x
http://secunia.com/product/4326/

DESCRIPTION:
Federico Fazzi has discovered some vulnerabilities in phpCMS, which
can be exploited by malicious people to compromise a vulnerable
system.

Input passed to the "PHPCMS_INCLUDEPATH" parameter in various scripts
isn't properly verified, before it is used to include files. This can
be exploited to include arbitrary files from external and local
resources.

The following scripts are affected:
* parser/parser.php
* parser/include/class.parser_phpcms.php
* parser/include/class.session_phpcms.php
* parser/include/class.edit_phpcms.php
* parser/include/class.http_indexer_phpcms.php
* parser/include/class.cache_phpcms.php
* parser/include/class.search_phpcms.php
* parser/include/class.lib_indexer_universal_phpcms.php
* parser/include/class.layout_phpcms.php
* parser/plugs/counter.php

Successful exploitation of some of the scripts requires that
"register_globals" is enabled and that support for ".htaccess" files
is disabled.

The vulnerabilities have been confirmed in version 1.2.1pl2. Other
versions may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly verified.

PROVIDED AND/OR DISCOVERED BY:
Federico Fazzi

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