Yong Chuan Koh

Researcher, IBM X-Force

Yong Chuan Koh is a security researcher for IBM X-Force. As part of his role, he provides detection guidance for vulnerabilites, discovering new vulnerabilites and also research in other exciting areas.

X-Force January 2, 2014

A (Beta)Bot in a Phish

6 min read - Recently a colleague sent me a .docx which triggered on our scanning engine. Being the optimist me, I personally view such incidents positively; it either proves the accuracy of our engine if it is a true positive, or offers an…

X-Force August 26, 2013

CVE-2011-4313: How to DOS BIND9 with Typical DNS Responses

11 min read - As I was looking through my old projects, I came across this old DOS vulnerability in BIND9: CVE-2011-4313. This caught my attention because rather than the typical case of parsing error from malformed fields, the root cause for this crash…

X-Force May 22, 2013

CVE-2013-1347: Microsoft Internet Explorer CGenericElement object Use-After-Free Vulnerability

4 min read - Hi everyone Last week, Microsoft released MS13-038 as part of the updates for May 2013. This specifically patches CVE-2013-1347, which is used in the compromise of U.S. Department of Labor website recently (well, I’m sure this is not...

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Yong Chuan Koh

A (Beta)Bot in a Phish

CVE-2011-4313: How to DOS BIND9 with Typical DNS Responses

CVE-2013-1347: Microsoft Internet Explorer CGenericElement object Use-After-Free Vulnerability

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Topic updates