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             AUSCERT External Security Bulletin Redistribution

                          ESB-2005.0987 -- [Win]
       Trend Micro ServerProtect EarthAgent Remote DoS Vulnerability
                             15 December 2005

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           ServerProtect EarthAgent daemon
Publisher:         iDEFENSE
Operating System:  Windows
Impact:            Denial of Service
Access:            Remote/Unauthenticated
CVE Names:         CVE-2005-1928

Original Bulletin: http://www.idefense.com/application/poi/display?id=356

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Trend Micro ServerProtect EarthAgent Remote DoS Vulnerability

iDefense Security Advisory 12.14.05
www.idefense.com/application/poi/display?id=356&type=vulnerabilities
December 14, 2005

I. BACKGROUND

Trend Micro Inc.'s ServerProtect provides antivirus scanning with
centralized management of virus outbreaks, scanning, patter file
updates, notifications and remote installations. More information about
the product set is available at:

 www.trendmicro.com/en/products/file-server/sp/evaluate/overview.htm

II. DESCRIPTION

Remote exploitation of a denial of service vulnerability in Trend Micro
Inc.'s ServerProtect EarthAgent daemon allow attackers to cause the
target process to consume 100% of available CPU resources.

The problem specifically exists within ServerProtect EarthAgent in the
handling of maliciously crafted packets transmitted with the magic value
"\x21\x43\x65\x87" targeting TCP port 5005. A memory leak also occurs
with each received exploit packet allowing an attacker to exhaust all
available memory resources with repeated attack.

III. ANALYSIS

Successful exploitation of the described vulnerability allows
unauthenticated remote attackers to consume 100% CPU resources,
increasingly consume memory resources and potentially crash the
underlying operating system. Full CPU utilization can be achieved with a
single packet, memory consumption occurs incrementally on subsequent
attacks.

IV. DETECTION

iDefense has confirmed the existence of this vulnerability in Trend
Micro ServerProtect for Windows Management Console 5.58 running with
Trend Micro Control Manager 2.5/3.0 and Trend Micro Damage Cleanup
Server 1.1. It is suspected that earlier versions and versions for other
platforms are vulnerable as well.

V. WORKAROUND

Employ firewalls, access control lists or other TCP/UDP restriction
mechanisms to limit access to vulnerable systems on TCP port 5005.

VI. VENDOR RESPONSE

The vendor has released the following security advisory for this issue:

 http://kb.trendmicro.com/solutions/search/main/search/
 solutionDetail.asp?solutionID=25254

"Contact Trend Micro Technical Support to request for the
SPNT5.58_HotfixB1137.zip file, which should only be installed on servers
running SPNT 5.58."

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2005-1928 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for
security problems.

VIII. DISCLOSURE TIMELINE

06/03/2005 Initial vendor notification
06/05/2005 Initial vendor response
12/14/2005 Public disclosure

IX. CREDIT

This vulnerability was discovered by Pedram Amini, OpenRCE
(www.openrce.org).

Get paid for vulnerability research
http://www.iDefense.com/poi/teams/vcp.jsp

Free tools, research and upcoming events
http://labs.iDefense.com

X. LEGAL NOTICES

Copyright © 2005 iDefense, Inc.

Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically, please
email customerservice@iDefense.com for permission.

Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct, indirect,
or consequential loss or damage arising from use of, or reliance on,
this information.
_______________________________________________

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