Public Vulnerability Reports

Trend Micro ServerProtect RPCFN_SYNC_TASK Integer Overflow Vulnerability



Trend Micro Inc.'s ServerProtect is an anti-virus software for Microsoft Windows and Novell NetWare servers. It enables network administrators to manage multiple deployments from a single management console. For more information, please visit vendor's website at the following URL.


Remote exploitation of an integer overflow vulnerability in Trend Micro Inc.'s ServerProtect anti-virus software could allow attackers to execute arbitrary code with system level privilege.

The Trend ServerProtect service (SpntSvc.exe) handles RPC requests on TCP port 5168 with interface uuid 25288888-bd5b-11d1-9d53-0080c83a5c2c. This service utilizes the StRpcSrv.dll library to service various RPC requests.

An integer overflow exists wtihin the RPCFN_SYNC_TASK function. This function allocates memory based on a user-supplied integer within the request data. By specifying a value that causes an integer overflow during arithmetic calculations, an attacker can cause too little memory to be allocated. User-supplied data is then copied into the resulting buffer using lstrcpyW(). This results in an exploitable heap buffer overflow.


Exploitation allows attackers to execute arbitrary code with system level privilege.

Exploitation requires that attackers send specially crafted RPC requests to the Trend ServerProtect or Trend ServerProtect Agent services.


iDefense has confirmed the existence of this vulnerability in ServerProtect for Windows 5.58 Build 1176 (Security Patch 3). Previous versions, as well as versions for other platforms, are suspected to be vulnerable.


iDefense is currently unaware of any workarounds for this issue.


Trend Micro has addressed this vulnerability with the release of Security Patch 4 for ServerProtect. For more information consult the release notes at the following URL.


The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2007-4219 to this issue. This is a candidate for inclusion in the CVE list (, which standardizes names for security problems.


06/14/2007 Initial vendor notification
06/20/2007 Initial vendor response
08/21/2007 Coordinated public disclosure


This vulnerability was discovered by Jun Mao (iDefense Labs).

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Copyright © 2007 Verisign, Inc.

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