Re: Multiple Vendor Anti-Virus Software Detection Evasion Vulnerability through
To: Andrey Bayora <firstname.lastname@example.org> Date: Fri, 28 Oct 2005 09:52:38 -0700
> > Multiple Vendor Anti-Virus Software Detection Evasion Vulnerability
> > forged magic byte.
> > AUTHOR: Andrey Bayora (www.securityelf.org)
> > For more details, screenshots and examples please read my article "The
> > of magic byte" at www.securityelf.org . In addition, you will find a
> > "triple headed" program which has 3 different 'execution entry
> > depending on the extension of the file (exe, html or eml) - just
> > extension and the SAME file will be executed by (at least) THREE
> > programs! (thanks to contributing author Wayne Langlois from
> > www.diamondcs.com.au).
Below I copied Trend Micro's response to the "magic byte" vulnerability in
Dear Valued Client,
My name is <removed>. I will be the one handling your case.
Please correct me if I left some issues or if I misunderstood your
Trend Micro is aware of a potential vulnerability related to the "forged
magic byte" in certain file types. Based on our analysis, this
vulnerability is limited in our products to one specific type of potential
virus file which is not commonly allowed in most IT systems and needs to
be executed manually. Trend Micro customers are currently able to detect
such files -- should they be created -- through our virus pattern file,
Please make sure that you regularly update your virus definitions. Hope
this information helps.
Any comments on their response?