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Forum Thread: GIGABYTE Dldrv2 ActiveX Control Multiple Vulnerabilities

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See the original Secunia advisory:
GIGABYTE Dldrv2 ActiveX Control Multiple Vulnerabilities

Secunia GIGABYTE Dldrv2 ActiveX Control Multiple Vulnerabilities
Secunia Official 17th Jan, 2011 20:32
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Location: Copenhagen, DK
Secunia Research has discovered some vulnerabilities in GIGABYTE Dldrv2 ActiveX Control, which can be exploited by malicious people to compromise a user's system.

1) The unsafe method "dl()" allows automatically downloading and executing an arbitrary file.

2) Combined usage of the unsafe methods "SetDLInfo()" and "Bdl()" allows automatically downloading an arbitrary file to an arbitrary location on the user's system.

3) Missing input validation of the "item" argument passed to the "SetDLInfo()" method can be exploited via array-indexing errors to overwrite memory and execute arbirtary code.

The vulnerabilities are confirmed in version 1.4.206.11. Other versions may also be affected.

hegefer RE: GIGABYTE Dldrv2 ActiveX Control Multiple Vulnerabilities
Member 17th Jan, 2011 20:32
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Posts: 2
User Since: 30th Apr 2009
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Location: HU
Last edited on 17th Jan, 2011 20:32
It is stated above:"Solution
Set the kill-bit for the affected ActiveX control."
My question is: How can I do that? I'm a simple user, not an expert.
Thx (if I get an answer)
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ddmarshall RE: GIGABYTE Dldrv2 ActiveX Control Multiple Vulnerabilities
Dedicated Contributor 17th Jan, 2011 21:04
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Posts: 961
User Since: 8th Nov 2008
System Score: 98%
Location: UK
Killbits are usually set through a Microsoft Update at the request of the vendor.

In the unlikely event that you want to try it yourself, the information is here:
http://support.microsoft.com/kb/240797

An in depth explanation:
http://blogs.technet.com/b/srd/archive/2008/02/06/...
http://blogs.technet.com/b/srd/archive/2008/02/07/...
http://blogs.technet.com/b/srd/archive/2008/02/08/...

This is the downloader that GigaByte use to download BIOS updates. As you don't need it most of the time, rather than messing with killbits I would either:
1. Uninstall it if it appears in Add/Remove Programs
2. Use Manage Addons in Internet Explorer Tools to disable iit

--
This answer is provided “as-is.” You bear the risk of using it.
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hegefer

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