Adobe Flash Plugin is vulnerable/outdated in 14.04 but there is no update in Firefox

I've done some experimentation and it seems that playing media on browsers in Lubuntu is fraught with difficulty. I have tried 3 browsers (Firefox, Chromium, Chrome) using the default media player plugin (Gecko) or Adobe flash plugin or Gnash browser plugin.
I tried with two different sites offering online music lessons on video:
On the (2) I could test only the two flash options, as they seem to be used by default on this site (at least with FF) with no option to use the media player.

Here are my results:

Adobe Flash does not work at all on either site.
Gnash works on only one of the above sites (1), but the controls overlay the picture.
Gecko works.

Adobe Flash works only on (2).
Gnash works on both sites but on (1) the controls overlay the picture.
Gecko does not work.


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I am using Ubuntu 14.04 LTS. When I open a site which requires flash plugin (e.g. Youtube), Firefox says This plugin is vulnerable and should be updated.

However if I click Check for updates... there is no update at all. This is what the update site listed:

Shockwave Flash 11.2 r202 (status up to date Java(TM) Plug-in 11.25.2 (status up to date 11.25.2)

So what should I do?

I've done some research at mozilla and adobe and tests with both recent LTS-versions (14.04 and 12.04) and I'm pretty sure it is just a numbering problem of the flash-plugin!

To make a long story short:
If you open in firefox "tools" - "add-ons" - "plugins" respectively look at the mozilla check and you've got version 11,2,202,425 (notice the commas!), you will get this error message.
and if your version is (same version, just with dots at the numbering) everything is fine.

So don't panic, your system is safe! ;-)

But I can...

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So you’ve been informed that Firefox has prevented the outdated plugin Adobe Flash from running. What’s up with that? If you’re not sure what this means or if you’re worried that your security is at risk, keep reading and let me help you understand what this message means and, more importantly, how you can fix it. No need to worry, it’s not complicated at all and you can easily correct this if you follow my guidelines here.

I’ve gotten plenty of e-mails from people who were as nervous as a long-tailed cat in a room full of rocking chairs about this message because the word “outdated” in the message sounds pretty serious.

At the end of this article you will have a clear understanding about why your computer is trying to warn you about this “plugin” and what you need to do in order to solve it.

The Origin Of The Message “Firefox Has Prevented The Outdated Plugin Adobe Flash From Running”

You may see the message that Firefox has prevented the...

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This can be annoying. Firefox will not play Adobe Flash content and will instead display the error ‘Fix Firefox has prevented the outdated plugin “Adobe Flash” from running’. While you can click “Allow…” button to temporarily (or permanently) allow it, it’s strongly recommended that you don’t do it. Because the outdated Flash plugin in vulnerable and can pose security threats. So what should you do? Simple! Go ahead and update the plugin. It’s also advisable to check for other plugins to see if updates are available and install them if they are. Here is a screenshot of the error message:

Download and install the latest version of Adobe Flash from here.

Check for updates of other Firefox plugins: Check from this link

After you have downloaded and installed the updates, restart your browser. The error should go away...

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Windows 7 64 Bit
Firefox 17.0.1
Shockwave Flash 11.5.502.110
Adobe Flash Plug-in 11 (I think?)

I feel as if I could pull my hair out, I am so frustrated! The reason I listed my Adobe Flash Plug-in as a "I think" is because if I have it installed then I do not see it in my list of plug-ins in Firefox. I have looked everywhere for a listing of it and only Revo uninstaller has it listed when I open Revo up. I know for a fact that I installed it because I just got so tired of it always crashing that I uninstalled it last week and then went to Adobe's site and clicked on "Latest version" to re-download it. I figured if I uninstalled the Adobe Flash Plug-in that i had and then installed the latest version I would not have this problem any more. But today everywhere that I went (even You-Tube) I could not play anything because I would get a pop-up window stating that my Adobe Flash plug-in had crashed--and to reload the page--which I did. And it did not help....

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In a fresh installed or upgraded Ubuntu, first thing to do is install flash plugin for web browser to enjoy flash videos. As a beginner, we use Ubuntu Software Center to search and install applications.

In Ubuntu 11.10, the Ubuntu Software Center shows two: Adobe Flash Plugin 10 and Adobe Flash Plugin. I selected Adobe Flash Plugin 10. But after installation, both Firefox and Google Chrome were still not working, even there’s no adobe flash plugin showing in about:plugins page.

May be the second choice work, I didn’t try. I finally use the following method get the flash working in my 64-bit Ubuntu 11.10 Oneiric:

First, in a terminal window remove old, unnecessary packages:

sudo apt-get remove --purge adobe-flashplugin flashplugin* nspluginwrapper

Reinstall the flash:

sudo apt-get install --reinstall adobe-flashplugin

Now, restart your browser and it should work.

Check your flash version:...

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Here I hope is the correct sources list you wished to see.

# deb trusty main restricted

# deb trusty-updates main restricted
# deb trusty-security main restricted

# See for how to upgrade to
# newer versions of the distribution.
deb trusty main restricted
deb-src trusty main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb trusty-updates main restricted
deb-src trusty-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT...

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YouTube sets the HTML5... NOT the visitor. By default now, ALL YouTube video is HTML5. MP4 f1st, Ogg 2nd, WebM 3rd and if none of those will play, THEN it falls back to FLV. That's hard coded.

Try doing a clean install of BOTH Flash Player and Shockwave.

Download the following:

Flash Player for ActiveX (Internet Explorer)

Flash Player Plug-in (All other browsers)

Flash Player Uninstaller

Also, download these:

Shockwave Player Uninstaller

Shockwave Player 12 FULL installer (other browsers)

You'll need to install Shockwave with the FULL installer for IE too, but there isn't a direct download for it. You'll need to go to: using IE AFTER everything else is done.

Save all the files and close your browser.

Run the uninstallers first (both of them)

Go to: C/Windows/System32

Delete the Macromed folder.

Open your Registry Editor (Start>Run or press...

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If you are facing the problem of Adobe flash plugin in Mozilla Firefox then i would advise you to update the latest version of Flash, it may fix the problem. Follow the following possible solutions to solve this issue.
1. Update Adobe Flash - To update, you will have to visit Mozilla's "Plugin Check" page there you will see "Flash needs to be updated". So to update it go to Adobe's Flash Player download page and download the Flash installer. After successful download you should close Firefox. Open the Flash installer file which have you downloaded and follow the instructions given properly.
2. Sometimes this type of problem can be resolved by disabling hardware acceleration in Flash Player settings. Follow the given steps to disable:-
a. Just go to the Adobe Flash Player Help page.
b. After that right-click on the Flash Player logo on that page, then click on Settings in the context menu. The Adobe Flash Player Settings screen will open.
c. Now you will...

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