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TITLE:
Microsoft Exchange Server 2003 Folder Listing Denial of Service

SECUNIA ADVISORY ID:
SA16740

VERIFY ADVISORY:
http://secunia.com/advisories/16740/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Microsoft Exchange Server 2003
http://secunia.com/product/1828/

DESCRIPTION:
A vulnerability has been reported in Microsoft Exchange Server 2003,
which can be exploited by malicious users to cause a DoS (Denial of
Service).

The vulnerability is caused due to an unspecified error in the
handling of requests to list public folders, and can be exploited to
crash the Microsoft Exchange Information Store service (Store.exe)
via an IMAP4 request.

Successful exploitation requires that the following conditions are
met:
* User tries to list public folders using IMAP4 version 4rev1
* Exchange server does not allow IMAP4 users to list public folders.
* User does not have a private mailbox on the server.

SOLUTION:
The vendor has issued a hotfix, which can be obtained by contacting
Microsoft Product Support Services.

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
http://support.microsoft.com/kb/840123

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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