Daniel Micay on Twitter: "@RichFelker It actually predates Chrome by 4 years: https://t.co/s0ZGIVdhnM I think the reason is just that ALL major browser vendors want the web environment to have equivalent functionality to native applications and they're going to keep adding more hardware access and other features." / Twitter

twitter.com/EtTuCarl/statu It's 3 vulnerabilities in Skia, which is a 2D rendering library used by Android, Firefox and Chromium. It's widely used and the context where an attacker could gain code exec varies. For Chromium on Android it's in the Chrome or WebView renderer sandbox.

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Carl (fan parody)

@EtTuCarl

Feb 14, 2019

@DanielMicay Do you know exactly what part of Android does this (specific to built-in photo app, webview, or something else)? twitter.com/cybersecboardr…

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Daniel Micay

@DanielMicay

Feb 14, 2019

There are other Android apps using it along applications on other platforms. There's a detailed post about the issues on the Project Zero blog: googleprojectzero.blogspot.com/2019/02/the-cu Can tell it has diverse apps using it from StackOverflow questions like stackoverflow.com/questions/4229 (C# on iOS).

stackoverflow.com

How to add rect using Skia Sharp and apply both fill color and stroke color to that object?

How to add rect or any shape using Skia Sharp and apply both fill color and stroke color to that object in iOS

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Skia sounds as awful as something I'd expect out of Google...

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They made it because Cairo has terrible performance and varying output across platforms. I'd expect that Cairo has bigger security problems too, but doesn't get nearly as much attention because it's not exposed in two of the major browsers as the 2D canvas implementation.

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Why is this kind of functionality even exposed at all except opt-in?! (Obvious answer: Google wants it for adtech fingerprinting.)

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Daniel Micay

@DanielMicay

Replying to

@RichFelker

It actually predates Chrome by 4 years: en.wikipedia.org/wiki/Canvas_el I think the reason is just that ALL major browser vendors want the web environment to have equivalent functionality to native applications and they're going to keep adding more hardware access and other features.

en.wikipedia.org

Canvas element - Wikipedia

8:23 PM · Feb 14, 2019Twitter Web Client

Replying to

IIRC canvas is the whole reason Gmail today is 1/10 the speed it was on vastly slower hardware 12 years ago.

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