ZDI-07-077: Trend Micro ServerProtect StRpcSrv.dll Insecure Method

Exposure Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-07-077.html

December 17, 2007

-- CVE ID:

-- Affected Vendor:

Trend Micro

-- Affected Products:

ServerProtect v5.58

-- TippingPoint(TM) IPS Customer Protection:

TippingPoint IPS customers have been protected against this

vulnerability by Digital Vaccine protection filter ID 5126.

For further product information on the TippingPoint IPS:

http://www.tippingpoint.com

-- Vulnerability Details:

These vulnerabilities allow attackers to execute arbitrary code on

vulnerable installations of Trend Micro ServerProtect. Authentication

is not required to exploit these vulnerabilities.

The specific flaw exists in the SpntSvc.exe daemon, bound by default on

TCP port 5168 and exposing the following DCE/RPC interface through

TmRpcSrv.dll:

/* opcode: 0x00, address: 0x65741030 */

error_status_t sub_65741030 (

[in] handle_t arg_1,

[in] long arg_2,

[in][size_is(arg_4)] byte arg_3[],

[in] long arg_4,

[out][size_is(arg_6)] byte arg_5[],

[in] long arg_6

);

Various sub-functions from StRpcSrv.dll are exposed in this interface

and allow for full file system access that can be trivially leveraged

to executed arbitrary code.

-- Vendor Response:

Trend Micro issued an update to correct this vulnerability on July 27th,

2007. More details can be found at:

http://www.trendmicro.com/ftp/documentation/readme/spnt_558_win_en_secur
itypatch4_readme.txt

-- Disclosure Timeline:

2007.02.01 - Vulnerability reported to vendor

2007.12.17 - Public release of advisory

-- Credit:

This vulnerability was discovered by Eric DETOISIEN.

-- About the Zero Day Initiative (ZDI):

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