IceWarp Web Mail 5.5.1, as used by Merak Mail Server 8.3.0r and VisNetic Mail Server version 8.3.0 build 1, does not properly restrict acceptable values for the language parameter to mail/settings.html before it is stored in a database, which can allow remote authenticated users to include arbitrary PHP code via a URL in a modified langsettings parameter to mail/index.html.
dir/include.html in IceWarp Web Mail 5.5.1, as used by Merak Mail Server 8.3.0r and VisNetic Mail Server version 8.3.0 build 1, allows remote attackers to include arbitrary local files via a null byte (%00) in the lang parameter, possibly due to a directory traversal vulnerability.
mail/include.html in IceWarp Web Mail 5.5.1, as used by Merak Mail Server 8.3.0r and VisNetic Mail Server version 8.3.0 build 1, does not properly initialize the defaultlayout and layoutsettings variables when an unrecognized HTTPUSERAGENT string is provided, which allows remote attackers to access arbitrary files via a request with an unrecognized User Agent that also specifies the desired defaultlayout and layoutsettings parameters.
PHP remote file include vulnerability in IceWarp Web Mail 5.5.1, as used by Merak Mail Server 8.3.0r and VisNetic Mail Server version 8.3.0 build 1, when registerglobals is enabled, allows remote attackers to include arbitrary local and remote PHP files via a URL in the (1) langsettings and (2) language parameters in (a) accounts/inc/include.php and (b) admin/inc/include.php.
Multiple directory traversal vulnerabilities in MERAK Mail Server 8.2.4r with Icewarp Web Mail 5.5.1, and possibly earlier versions, allows remote attackers to (1) delete arbitrary files or directories via a relative path to the id parameter to logout.html or (2) include arbitrary PHP files or other files via the helpid parameter to help.html.
Multiple cross-site scripting (XSS) vulnerabilities in MERAK Mail Server 8.2.4r with Icewarp Web Mail 5.5.1, and possibly earlier versions, allow remote attackers to inject arbitrary web script or HTML via the (1) id parameter to blank.html, or the createdataCX parameter to (2) calendard.html, (3) calendarm.html, or (4) calendarw.html.
MERAK Mail Server 8.2.4r with Icewarp Web Mail 5.5.1, and possibly earlier versions, allows remote attackers to obtain sensitive information via a direct request to bwlistinc.html, which reveals the path in an error message.
Cross-site scripting (XSS) vulnerability in index.html in IceWarp WebMail 5.5.1 and earlier allows remote attackers to inject arbitrary web script or HTML via the PHPSESSID parameter.