Re: Disable whatever is cleaning /tmp

2014-04-26 Thread Heinz Diehl
On 26.04.2014, Garry T. Williams wrote: 

> That's not true.  Swap will come into play and unreferenced data in
> the /tmp files will be paged out in favor of claiming that memory for
> other uses.

Did you actually try?

 [htd@kiera ~]$ dd if=/dev/zero of=/tmp/bigfile bs=1M count=3000
 dd: error writing ‘/tmp/bigfile’: No space left on device
 2048+0 records in
 2047+0 records out
 2147450880 bytes (2.1 GB) copied, 0.920556 s, 2.3 GB/s

 [htd@kiera ~]$ free -m
  total   used   free sharedbuffers cached
 Mem:  3745   1562   2183  0  0773 
 -/+ buffers/cache:787   2957
 Swap: 8191  0   8191

I have 4 GB of memory in my machine, and mount defaults to "size=50%"
(= 2GB). I have been running /tmp as a tmpfs a long time, because the
harddisk is a SSD. What happens can you see above: it creates a 2 GB
file and aborts for the next 1 GB. The machine has 8 GB of swap, and
nothing of it was used.

Disclaimer: this is not a rant against having /tmp using tmpfs. I'm
aware of the limitations, and have only encountered positive
experiences so far.

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Re: Coding Practice [was Re: Serious OpenSSL vulnerability]

2014-04-26 Thread Ian Malone
On 26 April 2014 03:38, Tim  wrote:
> On Wed, 2014-04-23 at 23:26 -0400, Rahul Sundaram wrote:
>> millions and millions of affected users who had to go ahead and change
>> passwords for many many things they rely on
>
> One thing I haven't seen mentioned, here nor elsewhere, was whether the
> bug could only affect you if they tried to hack the server while you
> were using it.  Or if it was possible to extra useful data well after
> you had been and gone.  Since it's talking about reading data beyond
> what's expected, I suspect it may be that you were vulnerable even
> sometime after your session, if the server hadn't re-used the memory for
> something else, yet.
>

The simplest 'backwards' exploit is if the private keys were stolen
then other encrypted traffic captured which had used the same keys
could then be decoded. Though IIUC 'perfect forward secrecy' should
reduce the risk of that. As you say there's also whatever data is
still in memory, that's a shorter window. I don't know how Apache
memory is structured, but I'd speculate there's the potential to leak
hashed passwords there.


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Re: Coding Practice [was Re: Serious OpenSSL vulnerability]

2014-04-26 Thread Frantisek Hanzlik
Ian Malone wrote:
> On 26 April 2014 03:38, Tim  wrote:
>> On Wed, 2014-04-23 at 23:26 -0400, Rahul Sundaram wrote:
>>> millions and millions of affected users who had to go ahead and change
>>> passwords for many many things they rely on
>>
>> One thing I haven't seen mentioned, here nor elsewhere, was whether the
>> bug could only affect you if they tried to hack the server while you
>> were using it.  Or if it was possible to extra useful data well after
>> you had been and gone.  Since it's talking about reading data beyond
>> what's expected, I suspect it may be that you were vulnerable even
>> sometime after your session, if the server hadn't re-used the memory for
>> something else, yet.
>>
> 
> The simplest 'backwards' exploit is if the private keys were stolen
> then other encrypted traffic captured which had used the same keys
> could then be decoded. Though IIUC 'perfect forward secrecy' should
> reduce the risk of that. As you say there's also whatever data is
> still in memory, that's a shorter window. I don't know how Apache
> memory is structured, but I'd speculate there's the potential to leak
> hashed passwords there.

I'm not SSL/TLS guru and I'm not in-deep study heartbeat OpenSSL bug
(mainly because I consider Fedora 15+ as too problematic and stay at
F14 with eventual migration to CentOS 6 on my servers, thus they aren't
affected with this bug), but - it is truth, that when private key is
stealed, this _always_ implied, that encrypted traffic may be read
with private key knowledge? As I know, when e.g. Diffie-Hellman key
exchanging is used, then either private key knowledge isn't sufficient
to decode network traffic. Of course, TLS RFCs give us some basic set
of mandatory ciphersuites which should know every TLS endpoint, and
there are also these, where private key knowledge is sufficient for
traffic decoding. But when at my side I allow e.g. (contrary to RFCs)
only DH ciphersuites, then maybe either I'm not able establish a
connection, or my connection is reliable - although connection is
tapped by someone, who keep my private key. Or am I wrong?
---
Regards, Franta Hanzlik

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Re: Coding Practice [was Re: Serious OpenSSL vulnerability]

2014-04-26 Thread Edward M

On 4/26/2014 1:19 PM, Frantisek Hanzlik wrote:

I consider Fedora 15+ as too problematic and stay at
F14


 yup...fedora version  19 or 20 bugs are far worse than a computer 
security breach.

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Flashplugin for Chrome ??

2014-04-26 Thread Mickey

Fedora-20 / Chrome-34.0.1847.132/ FlashPlayer-11.2.202.350

How do I get FlashPlayer working in Chrome,  I went into settings and 
imported Firefox setting,bookmarks,etc, Firefox is working fine with 
Flashplayer.



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Re: Flashplugin for Chrome ??

2014-04-26 Thread Steven Stern
On 04/26/2014 04:41 PM, Mickey wrote:
> Fedora-20 / Chrome-34.0.1847.132/ FlashPlayer-11.2.202.350
> 
> How do I get FlashPlayer working in Chrome,  I went into settings and
> imported Firefox setting,bookmarks,etc, Firefox is working fine with
> Flashplayer.
> 
> 
As far as I can tell, flash player isn't required for Chrome.  I removed
flash-plugin-11.2.202.350-release.x86_64 and went to Adobe's site. The
test for shockwave player fails
(http://www.adobe.com/shockwave/welcome/) but the test for flash itself
works (https://www.adobe.com/software/flash/about/), saying "You have
version 13,0,0,206 installed."

According to Adobe, Chrome for Linux has flash built in:
http://helpx.adobe.com/flash-player/kb/flash-player-google-chrome.html

$ rpm -qa |grep chrome
google-chrome-stable-34.0.1847.132-1.x86_64


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Re: Flashplugin for Chrome ??

2014-04-26 Thread Ed Greshko
On 04/27/14 05:57, Steven Stern wrote:
> On 04/26/2014 04:41 PM, Mickey wrote:
>> Fedora-20 / Chrome-34.0.1847.132/ FlashPlayer-11.2.202.350
>>
>> How do I get FlashPlayer working in Chrome,  I went into settings and
>> imported Firefox setting,bookmarks,etc, Firefox is working fine with
>> Flashplayer.
>>
>>
> As far as I can tell, flash player isn't required for Chrome.  I removed
> flash-plugin-11.2.202.350-release.x86_64 and went to Adobe's site. The
> test for shockwave player fails
> (http://www.adobe.com/shockwave/welcome/) but the test for flash itself
> works (https://www.adobe.com/software/flash/about/), saying "You have
> version 13,0,0,206 installed."
>
> According to Adobe, Chrome for Linux has flash built in:
> http://helpx.adobe.com/flash-player/kb/flash-player-google-chrome.html
>
> $ rpm -qa |grep chrome
> google-chrome-stable-34.0.1847.132-1.x86_64
>

You are correct.  Chrome has a flashplayer builtin.  If one uses 
chrome://plugins as the URL and has the Adobe plugin installed, as I do, they 
would see something like this.

Adobe Flash Player (2 files) - Version: 11.2 r202
Shockwave Flash 11.2 r202
Name:Shockwave Flash
Description:Shockwave Flash 13.0 r0
Version:13.0.0.206
Location:/opt/google/chrome/PepperFlash/libpepflashplayer.so
Type:PPAPI (out-of-process)
  Enable
MIME types:   
MIME typeDescriptionFile extensions
application/x-shockwave-flashShockwave Flash   
.swf
application/futuresplashFutureSplash Player   
.spl

Name:Shockwave Flash
Version:11.2 r202
Location:/usr/lib64/flash-plugin/libflashplayer.so
Type:NPAPI
  Disable
MIME types:   
MIME typeDescriptionFile extensions
application/x-shockwave-flashShockwave Flash   
.swf
application/futuresplashFutureSplash Player   
.spl

Note that I have the builtin player (libpepflashplayer.so) disabled at the 
moment since there is a problem when using that with mlb.com live games.

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Re: Coding Practice [was Re: Serious OpenSSL vulnerability]

2014-04-26 Thread Bruno Wolff III

On Sat, Apr 26, 2014 at 22:19:47 +0200,
  Frantisek Hanzlik  wrote:


I'm not SSL/TLS guru and I'm not in-deep study heartbeat OpenSSL bug
(mainly because I consider Fedora 15+ as too problematic and stay at
F14 with eventual migration to CentOS 6 on my servers, thus they aren't
affected with this bug), but - it is truth, that when private key is
stealed, this _always_ implied, that encrypted traffic may be read
with private key knowledge? As I know, when e.g. Diffie-Hellman key
exchanging is used, then either private key knowledge isn't sufficient
to decode network traffic. Of course, TLS RFCs give us some basic set
of mandatory ciphersuites which should know every TLS endpoint, and
there are also these, where private key knowledge is sufficient for
traffic decoding. But when at my side I allow e.g. (contrary to RFCs)
only DH ciphersuites, then maybe either I'm not able establish a
connection, or my connection is reliable - although connection is
tapped by someone, who keep my private key. Or am I wrong?


If you have the private key and can redirect network traffic you can 
do man in the middle attacks. If forward security isn't being provided 
then just being able to see the traffic can allow you to get session 
keys.


Depending on what you don't like about current Fedoras, you might try 
out the XFCE or Mate desktops. They provide an experience similar 
to Gnome 2. If you have an old graphics card, you will want to use 
kdm or lxdm instead of gdm.

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Re: SOLVED: Thunderbird can't read Mail

2014-04-26 Thread Stephen Morris

Hi Zeff,
You are right your method will work as long as the destination 
location in local folders is empty as you are overwriting those files 
when you do your copy.
The method I was suggesting was to get the second set of emails to 
be listed as an inbox as I thought they were on the original system.
But either method will work as long as appropriate precautions are 
taken.


regards,
Steve

On 04/26/2014 10:19 AM, Joe Zeff wrote:

On 04/25/2014 05:06 PM, Stephen Morris wrote:

 Just my 2 cents worth, which may or may not help. As I understand
the way Thunderbird works, the mail files in your profile directory that
Thunderbird uses are defined in the Local directory text box in the
Message Storage section at the bottom of your Sever Settings in your
Account Definition, which unfortunately as far as I am aware doesn't
support multiple directories.


...because it doesn't need to.  On my desktop computer, all of the 
mailboxes are stored in 
/home/joe/.thunderbird/ywhu7a5g.default/Mail/Local Folders, and the 
name of the default profile varies from one person to another.


In order to have your old mail folders show up, start off by closing 
Thunderbird.  Then, copy all of the mailbox files and their indexes 
(the .msf files) into that directory.  When you restart T'bird, 
they'll be available.  I know, because I use this to move saved emails 
from my laptop to my desktop whenever I've been away from home and had 
anything that needed to be available at home.


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Re: Coding Practice [was Re: Serious OpenSSL vulnerability]

2014-04-26 Thread Joe Zeff

On 04/26/2014 04:35 PM, Bruno Wolff III wrote:


Depending on what you don't like about current Fedoras, you might try
out the XFCE or Mate desktops. They provide an experience similar to
Gnome 2. If you have an old graphics card, you will want to use kdm or
lxdm instead of gdm.


If you pick Xfce, lightdm is probably your best choice, as it's the one 
you'd get if you did a clean install with Xfce as your only DM.  Using 
gdm pulls in a considerable amount of Gnome cruft, and kdm probably does 
the equivalent.

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Re: Flashplugin for Chrome ??

2014-04-26 Thread Ed Greshko
On 04/27/14 09:02, Stephen Morris wrote:
> Just as a side issue to this, how do you get chrome to provide what you 
> have shown?
> I know chrome has flash built in, and the adobe installer installs the 
> plugin in /usr/lib64, plus I have a link to the adobe plugin in /usr/lib 
> because the upstream 64-bit Firefox wants its plugins in /usr/lib, what I 
> can't account for is the 4th plugin.
> If I use chrome://plugins in the browser I get the following display (the 
> following display is how the chrome output is represented in Thunderbird as a 
> result of a copy and paste, not how it is displayed in chrome):
>
> Adobe Flash Player (4 files) - Version: 13.0.0.182
> Shockwave Flash 13.0 r0
>

If you look at the very top line you should seeover in the right hand side 
"+Details".  Click on that to expand the list.

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