Gentoo Archives: gentoo-user

From: Alan McKinnon <alan.mckinnon@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Linux viruses
Date: Mon, 08 Jul 2013 14:54:20
Message-Id: 51DAD213.8040208@gmail.com
In Reply to: Re: [gentoo-user] Linux viruses by Dale
1 On 08/07/2013 15:24, Dale wrote:
2 > Walter Dnes wrote:
3 >> On Fri, Jul 05, 2013 at 05:21:25PM -0500, Dale wrote
4 >>
5 >>> Well, no Wine here. So that won't happen. Actually, I don't have a
6 >>> copy of windoze here at all. Neither of my two rigs have ever had
7 >>> windoze installed on them at all.
8 >>>
9 >>> BTW, I have been known to open those attachments before. I usually open
10 >>> them with kwrite or something and try to see what is human readable in
11 >>> there. Most is machine language but there is usually a small portion
12 >>> that is human readable. They sent it and I'm nosy that way. lol
13 >> The bad guys go after the "low hanging fruit", i.e. the easiest
14 >> targets. Years ago, it was Internet Explorer. This also included
15 >> Outlook and Outlook Express, which were glorified IE frontends. There
16 >> were many "drive-by-downloads", thanks to Active-X (aka "Active-Hacks").
17 >>
18 >> MS has gotten its act together on IE, so the bad guys are now going
19 >> after other stuff. The "other stuff" is cross-platform stuff like Java
20 >> and Javascript and Adobe Acrobat and Flash (known affectionately as
21 >> "Schlockwave Trash"). So yes... it can happen here.
22 >>
23 >> I've been Java-free for years. I use Noscript and Flashblock on
24 >> Firefox. I keep Opera around for those sites that don't work on
25 >> Firefox. I also use mupdf instead of the bloated Acrobat Reader
26 >> monstrosity.
27 >>
28 >
29 >
30 > Questions. Can a virus infect the OS when running on Linux through
31 > java/javascript/flash?
32
33 Yes. If you can get the payload to run, then that code will run and will
34 do whatever the environment it is in will let it do.
35
36 > Or would the infection at the least be limited
37 > to that user?
38
39 That's the normal case, but by no means the only one.
40
41 If you have sudoers set up to run any command as root without using a
42 password, well then....
43
44 >
45 > How is html5 going to affect this? Better or worse?
46
47
48 I think you need to gain a deeper understanding of how computer software
49 works Dale. You are asking black/white questions, and the world just is
50 not like that. It's all grey.
51
52 These questions do not have simple answers. Windows well-deserved it's
53 bad rep from many years ago - that came not from bad security or
54 loopholes but more from the simple fact that early Windows had no
55 security to speak of. It wasn't poor locks, there just wasn't a lock,
56 not a door ... oh stuff it there wasn't even a wall to put the door in
57 for many years!
58
59 Things have vastly improved now and Windows in the hands of someone with
60 clue rates about the same as (more-or-less conventional) Linux in the
61 hands of someone with clue.
62
63 Lastly, gaining root permissions is no longer the holy grail it used to
64 be. Nowadays first prize is ability to send mail through your mail
65 accounts, access your browsing history, and get into your password
66 wallet. All of which by their very nature, MUST be accessible to the
67 user's account.
68
69
70 --
71 Alan McKinnon
72 alan.mckinnon@×××××.com

Replies

Subject Author
Re: [gentoo-user] Linux viruses Dale <rdalek1967@×××××.com>