Trend Micro ServerProtect StRpcSrv.dll Insecure Method Exposure Vulnerability

Advisory Content :

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):

Established by TippingPoint, The Zero Day Initiative (ZDI) represents

a best-of-breed model for rewarding security researchers for responsibly

disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research

through the ZDI can find more information and sign-up at:

http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is used.

3Com does not re-sell the vulnerability details or any exploit code.

Instead, upon notifying the affected product vendor, 3Com provides its

customers with zero day protection through its intrusion prevention

technology. Explicit details regarding the specifics of the

vulnerability are not exposed to any parties until an official vendor

patch is publicly available. Furthermore, with the altruistic aim of

helping to secure a broader user base, 3Com provides this vulnerability

information confidentially to security vendors (including competitors)

who have a vulnerability protection or mitigation product.

CONFIDENTIALITY NOTICE: This e-mail message, including any attachments,

is being sent by 3Com for the sole use of the intended recipient(s) and

may contain confidential, proprietary and/or privileged information.

Any unauthorized review, use, disclosure and/or distribution by any

recipient is prohibited. If you are not the intended recipient, please

delete and/or destroy all copies of this message regardless of form and

any included attachments and notify 3Com immediately by contacting the

sender via reply e-mail or forwarding to 3Com at postmaster (at) 3com (dot)
com. [email concealed]

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Trend Micro ServerProtect StRpcSrv.dll Insecure Method Exposure Vulnerability