mailing list archives
Re: Avast Antivirus
From: Floste <floste () gmx de>
Date: Thu, 19 Jan 2012 19:42:22 +0100
So if a sandboxed process injects a DLL in say a running IE process outside
That is exactly what we are talking about! Avast allows you to run a
program inside a sandbox. A program running inside the sandbox can still
inject dlls into processes outside of the sandbox! So much for the
Avast automatically suggests to use the sandbox if one tries to start
certain possibly dangerous programs.
In addition to the sandbox Avast has onother, diffenent feature called
"SafeZone". Unlike the sandbox, SafeZone is supposed to keep keyloggers
out of certain processes. But you can get into these "safe" processes
This only applies if the user is running an x64 operating system. (The
os type matters, not the application type) I guess that they do
additional security checks in kernelmode on x86 os, but not on x64 os.
Btw: I like heise security :)
Am 19.01.2012 12:04, schrieb Juergen Schmidt:
On Tue, 17 Jan 2012, Floste wrote:
Avast Antivirus also comes with sandbox and a "SafeZone". But both can
be circumvented using simple dll-injection and they seem to do nothing
about it: http://forum.avast.com/index.php?topic=82291.0
Maybe this post here will encourage them to fix it.
In my understanding a sandbox is not supposed to prevent you from
getting in from the outside but from escaping from the inside. So if a
sandboxed process injects a DLL in say a running IE process outside --
then we are talking about vulns
Juergen Schmidt Chefredakteur heise Security www.heisec.de
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