PHP remote file inclusion vulnerability in start.php in Bitrix Site Manager 4.0.x allows remote attackers to execute arbitrary PHP code via the _SERVER[DOCUMENT_ROOT] parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/21018
http://www.vupen.com/english/advisories/2005/0779
http://www.securityfocus.com/bid/13965
http://www.bitrixsoft.com/support/forum/read.php?FID=10&TID=1872
http://www.bitrixsoft.com/sitemanager/versions.php?module=main