server/webmail.php in IceWarp WebMail in IceWarp Mail Server before 10.3.3 allows remote attackers to read arbitrary files, and possibly send HTTP requests to intranet servers or cause a denial of service (CPU and memory consumption), via an XML external entity declaration in conjunction with an entity reference.
https://www.trustwave.com/spiderlabs/advisories/TWSL2011-013.txt
https://exchange.xforce.ibmcloud.com/vulnerabilities/70025
https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-3542
http://www.securityfocus.com/bid/49753
http://securitytracker.com/id?1026093
http://securityreason.com/securityalert/8404
http://archives.neohapsis.com/archives/bugtraq/2011-09/0145.html