Trend Micro ServerProtect EarthAgent Remote DoS Vulnerability

Credit: Pedram Amini
Risk: Medium
Local: No
Remote: Yes

CVSS Base Score: 7.8/10
Impact Subscore: 6.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Complete

Trend Micro ServerProtect EarthAgent Remote DoS Vulnerability iDefense Security Advisory 12.14.05 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: 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 "x21x43x65x87" 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: solutionDetail.asp?solutionID=25254 "Contact Trend Micro Technical Support to request for the 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 (, 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 ( Get paid for vulnerability research Free tools, research and upcoming events 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 (at) iDefense (dot) com [email concealed] 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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