Vulnerability Note VU#204448

Trend Micro ServerProtect Agent service RPC stack-buffer overflow

Overview

Trend Micro ServerProtect Agent service fails to properly handle RPC requests. This vulnerability may allow a remote, unauthenticated attacker to execute arbitrary code.

I. Description

The Trend Micro ServerProtect Agent service handles RPC Remote Procedure Calls (RPC) using port 3628/tcp. The Trend Micro ServerProtect Agent fails to properly validate RPC requests, possibly allowing a stack-based buffer overflow to occur. A remote, unauthenticated attacker can trigger this overflow vulnerability by sending a specially crafted RPC request to the RPCFN_CopyAUSrc function.

More information can be found in the README file for Security Patch 4.

II. Impact

A remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system.

III. Solution

Apply a patch

Trend Micro has addressed these vulnerabilities with Security Patch 4.

Restrict Access to the Trend Micro ServerProtect Agent

Until the patch can be applied you may wish to block access to the vulnerable software from outside your network perimeter, specifically by blocking access to the ports used by the Trend Micro ServerProtect Agent service (3628/tcp). This will limit your exposure to attacks. However, blocking at the network perimeter would still allow attackers within the perimeter of your network to exploit the vulnerability. The use of host-based firewalls in addition to network-based firewalls can help restrict access to specific hosts within the network. It is important to understand your network's configuration and service requirements before deciding what changes are appropriate.

Systems Affected

Vendor	Status	Date Updated
Trend Micro	Vulnerable	23-Aug-2007

References

http://www.trendmicro.com/ftp/documentation/readme/spnt_558_win_en_securitypatch4_readme.txt
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=587
http://secunia.com/advisories/26523/
http://www.zerodayinitiative.com/advisories/ZDI-07-050.html

Credit

This vulnerabilities were reported by iDefense Labs. iDefense Labs in turn credits Code Audit Labs, Jun Mao from iDefense Labs, and two anonymous researchers.

This document was written by Jeff Gennari.

Other Information

Date Public	08/21/2007
Date First Published	08/23/2007 01:07:11 PM
Date Last Updated	09/10/2007
CERT Advisory
CVE Name	CVE-2007-4218
Metric	22.31
Document Revision	11