full-disclosure - ZDI-07-025: Trend Micro ServerProtect AgRpcCln.dll Stack Overflow Vulnerability

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Message-ID: <OF7CB76616.97282FC4-ON882572D4.00703533-882572D4.007D1C6E@3com.com>
Date: Mon, 7 May 2007 15:46:33 -0700
From: zdi-disclosures@...m.com
To: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: ZDI-07-025: Trend Micro ServerProtect
 AgRpcCln.dll Stack Overflow Vulnerability

ZDI-07-025: Trend Micro ServerProtect AgRpcCln.dll Stack Overflow
            Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-07-025.html
May  7, 2007

-- CVE ID:
CVE-2007-2508

-- Affected Vendor:
Trend Micro

-- Affected Products:
ServerProtect v5.58

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability since May  2, 2007 by Digital Vaccine protection
filter ID 5125. For further product information on the TippingPoint IPS:

    http://www.tippingpoint.com 

-- Vulnerability Details:
This vulnerability allows attackers to execute arbitrary code on
vulnerable installations of Trend Micro ServerProtect. Authentication
is not required to exploit this vulnerability.

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
    );

A sub-function within this interface is vulnerable to a stack overflow
due an unbounded call to wcscpy() within the routine
CAgRpcClient::CreateBinding() defined in AgRpcCln.dll library.

-- Vendor Response:
Trend Micro has issued an update to correct this vulnerability. More
details can be found at:

    http://www.trendmicro.com/download_beta/product.asp?productid=17

-- Disclosure Timeline:
2007.02.01 - Vulnerability reported to vendor
2007.05.02 - Digital Vaccine released to TippingPoint customers
2007.05.07 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by Eric DETOISIEN.

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, a division of 3Com, 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.

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