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In what version was the SharedArrayBuffer implemented as I'm concerned about Meltdown. I'm still running 51.0.1

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Trying to determine how vulnerable I am to Meltdown. Using MacBook Air with 10.13.2. Is the fact that I'm running an older version of FF (51.0.1) actually helpful?

Trying to determine how vulnerable I am to Meltdown. Using MacBook Air with 10.13.2. Is the fact that I'm running an older version of FF (51.0.1) actually helpful?

Additional System Details

Installed Plug-ins

  • Adobe® Acrobat® Plug-in for Web Browsers, Version 11.0.23
  • AmazonMP3DownloaderPlugin 1.0.16
  • Version 5.41.3.0
  • Shockwave Flash 27.0 r0
  • 5.1.50901.0
  • iPhoto6

Application

  • Firefox 51.0.1
  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:51.0) Gecko/20100101 Firefox/51.0
  • Support URL: https://support.mozilla.org/1/firefox/51.0.1/Darwin/en-US/

Extensions

  • Adblock Plus 3.0.2 ({d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d})
  • Application Update Service Helper 1.0 (aushelper@mozilla.org)
  • Multi-process staged rollout 1.7 (e10srollout@mozilla.org)
  • Pocket 1.0.5 (firefox@getpocket.com)
  • Web Compat 1.0 (webcompat@mozilla.org)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription:
  • adapterDeviceID: 0x1626
  • adapterDrivers:
  • adapterRAM:
  • adapterVendorID: 0x8086
  • crashGuards: []
  • currentAudioBackend: audiounit
  • driverDate:
  • driverVersion:
  • featureLog: {u'fallbacks': [], u'features': [{u'status': u'available', u'description': u'Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'HW_COMPOSITING'}, {u'status': u'available', u'description': u'OpenGL Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'OPENGL_COMPOSITING'}]}
  • info: {u'TileHeight': 512, u'TileWidth': 512, u'AzureFallbackCanvasBackend': u'none', u'ApzWheelInput': 1, u'AzureCanvasAccelerated': 1, u'AzureCanvasBackend': u'skia', u'AzureContentBackend': u'skia'}
  • numAcceleratedWindows: 2
  • numTotalWindows: 2
  • supportsHardwareH264: Yes
  • webgl2Renderer: Intel Inc. -- Intel(R) HD Graphics 6000
  • webglRenderer: Intel Inc. -- Intel(R) HD Graphics 6000
  • windowLayerManagerRemote: True
  • windowLayerManagerType: OpenGL

Modified Preferences

Misc

  • User JS: No
  • Accessibility: No
Shadow110 1072 solutions 14836 answers
https://support.mozilla.org/en-US/kb/update-firefox-latest-version helps with it on our end today. https://www.mozilla.org/en-US/firefox/57.0.4/releasenotes/?utm_source=firefox-browser&utm_medium=firefox-browser&utm_campaign=whatsnew Microsoft Updated this Date KB4056892 fyi : https://www.howtogeek.com/338269/a-huge-intel-security-hole-could-slow-down-your-pc-soon/ Please let us know if this solved your issue or if need further assistance.
jscher2000
  • Top 10 Contributor
8704 solutions 71122 answers

You can check whether SharedArrayBuffer is enabled in your Firefox, and disable it if you like, this way:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste shared and pause while the list is filtered

(3) If the javascript.options.shared_memory preference is true, double-click it to flip the value to false

You can check whether SharedArrayBuffer is enabled in your Firefox, and disable it if you like, this way: (1) In a new tab, type or paste '''about:config''' in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk. (2) In the search box above the list, type or paste '''shared''' and pause while the list is filtered (3) If the '''javascript.options.shared_memory''' preference is '''true''', double-click it to flip the value to false
jscher2000
  • Top 10 Contributor
8704 solutions 71122 answers

And you are worried about a very exotic attack scenario while you are running a browser with known / public / disclosed security vulnerabilities? This is a little like fearing plane crashes while driving is much more deadly.

And you are worried about a very exotic attack scenario while you are running a browser with known / public / disclosed security vulnerabilities? This is a little like fearing plane crashes while driving is much more deadly.