[NT] Trend Micro ServerProtect StRpcSrv.dll Insecure Method Exposure Vulnerability

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Trend Micro ServerProtect StRpcSrv.dll Insecure Method Exposure
Vulnerability
------------------------------------------------------------------------

SUMMARY

Vulnerabilities allow attackers to execute arbitrary code on vulnerable
installations of Trend Micro ServerProtect. Authentication is not required
to exploit these vulnerabilities.

DETAILS

Vulnerable Systems:
* Trend Micro ServerProtect version 5.58

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_securitypatch4_readme.txt> http://www.trendmicro.com/ftp/documentation/readme/spnt_558_win_en_securitypatch4_readme.txt

Disclosure Timeline:
2007.02.01 - Vulnerability reported to vendor
2007.12.17 - Public release of advisory

ADDITIONAL INFORMATION

The information has been provided by <mailto:zdi-disclosures@3com.com>
The Zero Day Initiative (ZDI).
The original article can be found at:
<http://www.zerodayinitiative.com/advisories/ZDI-07-077.html>

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

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