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TITLE:
Mercur Messaging Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA15234

VERIFY ADVISORY:
http://secunia.com/advisories/15234/

CRITICAL:
Moderately critical

IMPACT:
Manipulation of data, Exposure of system information, Exposure of
sensitive information

WHERE:
>From remote

SOFTWARE:
Mercur Messaging 2005
http://secunia.com/product/5035/

DESCRIPTION:
Dr_insane has reported some vulnerabilities in Mercur Messaging,
which can be exploited by malicious people to manipulate files and
disclose sensitive information.

1) It is possible to disclose the source of ".ctml" files by
appending a white space ("%20") in the request.

2) Input passed to the "Folder.Id" parameter in "deletefolder.ctml",
"deletemessage.ctml", "origmessage.ctml" and "readmessage.ctml", the
"Message.Id" parameter in "editmessage.ctml" and the
"Message.Command" parameter in "messages.ctml" isn't properly
sanitised before being used. This can be exploited to read, delete,
move or create arbitrary files via directory traversal attacks.

Successful exploitation requires user to be authenticated to the web
mail service.

The vulnerabilities have been reported in version 2005 SP2 (file
version 5.0.10.0). Other versions may also be affected.

SOLUTION:
Grant only trusted users access to the web mail. Also filter
malicious characters and character sequences in a proxy server or
firewall with URL filtering capabilities.

PROVIDED AND/OR DISCOVERED BY:
Dr_insane

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