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 Forum index » Off-Topic Area » Security
Viruses in PUPPY Linux, YES, "Viruses in Linux"
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Sylvander

Joined: 15 Dec 2008
Posts: 3400
Location: West Lothian, Scotland, UK

PostPosted: Tue 21 Jun 2011, 16:52    Post subject:  

I'd be inclined to:
Ctrl+Alt+backspace
To drop ot a command prompt...
Then:
xwin
To come back into the desktop...
Then:
Restart Firefox...
And choose which of the windows/tabs to restart...
By un-ticking the window/tab with the problem.

Any reason this wouldn't work?
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Bruce B


Joined: 18 May 2005
Posts: 11080
Location: The Peoples Republic of California

PostPosted: Tue 21 Jun 2011, 17:01    Post subject:  

Vulnerabilities don't exist anywhere and everywhere.

A vulnerability can only exist if it actually exists. Even at that, it has to be successfully exploited to be of consequence.

We still don't have to my knowledge a verified report on any Puppy users having been exploited.

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Bruce B


Joined: 18 May 2005
Posts: 11080
Location: The Peoples Republic of California

PostPosted: Tue 21 Jun 2011, 17:07    Post subject:  

Sylvander wrote:
I'd be inclined to:
Ctrl+Alt+backspace
To drop ot a command prompt...
Then:
xwin
To come back into the desktop...
Then:
Restart Firefox...
And choose which of the windows/tabs to restart...
By un-ticking the window/tab with the problem.

Any reason this wouldn't work?


It would kill the Browser and all X apps.

My question is how does it kill them? If it doesn't kill them nicely file corruption can occur with applications like Firefox

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nooby

Joined: 29 Jun 2008
Posts: 10557
Location: SwedenEurope

PostPosted: Tue 21 Jun 2011, 17:38    Post subject:  

Sylvander wrote:
I'd be inclined to:
Ctrl+Alt+backspace
To drop ot a command prompt...
Then:
xwin
To come back into the desktop...
Then:
Restart Firefox...
And choose which of the windows/tabs to restart...
By un-ticking the window/tab with the problem.

Any reason this wouldn't work?


I have not tested more than one or two or three times but my poor memory tell me that FF remember all the tabs like you also indicate and how do I remember which of them that I was supposed to kill.

Okay one can do a workaround. To never have more than one tab open then one always know what to kill.

Fortunately it happen rather seldom that one have to kill a FF session.

But sometimes it lock up forever waiting for an ad that never loads and the FF is hanging and don't allow any other operation either it even refuse to get shut down using Ctrl+W

I had not heard of the Ctrl+F4 is that a FF thing or a OS or JWM thing?

I found this using google

For those of us Firefox users who love the tabs, Ctrl-F4 is an indispensable tool for ... It turns out, the solution is obvious to any average linux user, ...
forum.eeeuser.com/viewtopic.php?id=7256

Hope I remember this one next time something happens.

Does one still get the virus downloaded?

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Sky Aisling


Joined: 27 Jun 2009
Posts: 894
Location: Port Townsend, WA. USA

PostPosted: Wed 22 Jun 2011, 01:40    Post subject:  

Thank you GCMartin for posting this thread. Thank you Nooby for keeping the 'newbie' voice alive in the discussion. Thanks to all for the thoughtful contributions.
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Bruce B


Joined: 18 May 2005
Posts: 11080
Location: The Peoples Republic of California

PostPosted: Wed 22 Jun 2011, 01:57    Post subject:  

Firefox has open about 240 files. Of these files about 20 are open for updating and writing back.

I take the extra time to close it gently so it has a chance to finish writing the files which are intended to be written back. If it is in the middle of a write operation and it is forcibly killed, it will not finish writing. A partially written file is a corrupted file. What else could it be?

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nooby

Joined: 29 Jun 2008
Posts: 10557
Location: SwedenEurope

PostPosted: Wed 22 Jun 2011, 03:09    Post subject:  

Bruce if one consider what you just wrote, what am I supposed to do?
What is it you do? I read your words again and again but have no idea.

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James C


Joined: 26 Mar 2009
Posts: 5680
Location: Kentucky

PostPosted: Wed 22 Jun 2011, 03:18    Post subject:  

I ran into this a while ago and posted on a different thread.
http://www.murga-linux.com/puppy/viewtopic.php?p=512014#512014

Nothing bad happened, just entertaining to watch. Smile
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Sylvander

Joined: 15 Dec 2008
Posts: 3400
Location: West Lothian, Scotland, UK

PostPosted: Wed 22 Jun 2011, 03:28    Post subject:  

1. Perhaps I should have said...
That my pupsave on the internal HDD...
(a) Is treated as though it's a pupsave on a Flash Drive. [I use this method]
Then...
(b) I use this method so no changes made during the session are auto-saved back to the pupsave during the session.
[I can choose if/when to do it manually, by clicking the "Save" icon on the desktop]
Then...
(c) I use this method to be given the choice at shut-down/reboot "to save or not to save".

2. Hence I can drop to a command prompt with no nasty consequences.
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Bruce B


Joined: 18 May 2005
Posts: 11080
Location: The Peoples Republic of California

PostPosted: Wed 22 Jun 2011, 05:33    Post subject:  

nooby wrote:
Bruce if one consider what you just wrote, what am I supposed to do?
What is it you do? I read your words again and again but have no idea.


Have you ever read posts where Firefox crashes all the time? I don't have that problem.

I respect the software and what it is doing. I shut down gently, even if it takes extra work.

Do you want a how to?

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nooby

Joined: 29 Jun 2008
Posts: 10557
Location: SwedenEurope

PostPosted: Wed 22 Jun 2011, 06:18    Post subject:  

If I want a how to close down gently?
Yes that what I asked but maybe failed to express clearly! Smile

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Bruce B


Joined: 18 May 2005
Posts: 11080
Location: The Peoples Republic of California

PostPosted: Wed 22 Jun 2011, 10:35    Post subject:  

Nooby,

Here is your how-to practice it on a normal running firefox. Use it in the even firefox hangs loading a page, acts up, or looks like a website is up to mischief.

1) Left-Alt+Left-Ctrl+F2 (drops you to a text mode tty)

2) Enter login name and password

3) Open htop

4) Select the firefox threads, use arrow keys and kill them with signal 15

5) Left-Alt+F3 (or F4 or F5) depends on number of ttys to return to X session

I use this when X locks up because some mal designed web page has brought the browser and all of X to a virtual standstill

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gcmartin

Joined: 14 Oct 2005
Posts: 4111
Location: Earth

PostPosted: Wed 22 Jun 2011, 13:38    Post subject: Scenario to consider  

A scenario: this is an hypothetical case for comment
Lets suppose someone has a forum. And, a moderator of that forum chooses to use their power to 'target' a forum member. Invading the member and placing a poison pill that begins to go the work on the member's network PCs. Should this be called a virus if it begin its bad behavior from a Linux machine?

Questions which arise
We all know this is misuse of power, but;
  • should a "poison pill" like this be called a virus?
  • when this is detected, where or how should it be reported?
  • What would you do if you discovered this?
  • And, if you found that it was corrupting your filesystems, then what?

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postfs1


Joined: 27 Mar 2010
Posts: 831

PostPosted: Wed 22 Jun 2011, 15:29    Post subject: Re: Scenario to consider  

gcmartin wrote:
at 13:38, p=536909 wrote:
...

I would have affixed to my chest a palm when some unknown for me part of my body at the chest would have started to pulsate with the word's rhythm, which can be noticable on the dynamics of loudspeakers. Then, i would have started to build some orientation: valuable papers are already published and bought. If i can eat the information successfully then something will grow up.
But noone told me about uglified excrements.
So what... who i gonna call? Ghosthunters? Ghosthamsters?
Who i gonna call? Ghostbusters!
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Sky Aisling


Joined: 27 Jun 2009
Posts: 894
Location: Port Townsend, WA. USA

PostPosted: Wed 22 Jun 2011, 15:45    Post subject:  

Here is Wiki's definition of 'Virus' (not that Wiki is the last word in definitions)

http://en.wikipedia.org/wiki/Computer_virus

Quote:
Computer virus ...
Not to be confused with Malware.

A computer virus is a computer program that can copy itself[1] and infect a computer. The term "virus" is also commonly but erroneously used to refer to other types of malware, including but not limited to adware and spyware programs that do not have the reproductive ability. A true virus can spread from one computer to another (in some form of executable code) when its host is taken to the target computer; for instance because a user sent it over a network or the Internet, or carried it on a removable medium such as a floppy disk, CD, DVD, or USB drive.[2]

Viruses can increase their chances of spreading to other computers by infecting files on a network file system or a file system that is accessed by another computer.[3][4] ...


Perhaps this can give a point of reference in the discussion.
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