Re: How do you guys handle PNG/JPG binary files with potential payloads for all the image viewers?

[Shubo <Shubo@galbo.io>]

I feel like ClamAV would be the cheapest and easiest solution for 
handling png and jpgs, But like Sebastian said it does depend on use 
case. There are multiple av scanners/solutions but many are paid 
services, I've been using clam av for my email setup and it feel like 
it's been sufficient. You would need to enable png/jpeg extensions for 
ClamAV if that would be your plan and some sort of sandboxed environment 
for clamav/imagemagick iirc.


P.S I've just subscribed to this list, so please excuse me if i repeated 
any information as I can't see this whole email thread.


 Shubo

On 6/20/2022 12:10 PM, Sebastian Rose wrote:
> Davide Prina <Davide.Prina@null.net> writes:
> > Corey H wrote:
> >
> > > how do you guys test all of the potential PNG/JPG potential malware payloads
> What's your use-case? As I'm not aware of an vector for GNU/Linux in
> normal everyday use¹, I guess you host files for Windows clients?
>
> Did anyone mention ClamAV already? If so, please ignore me (sorry for
> not following closely...).
>
>
>   - Sebastian
>
>
> ¹ One can execute every file on GNU/Linux. But the attack is that
> execution of a file, not the file (otherwise we'd have to consider `rm',
> `gpg', `scp', and many more malware, too).