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[bug#30329] [PATCH] gnu: emacs: Build with xwidgets support.

From: Leo Famulari
Subject: [bug#30329] [PATCH] gnu: emacs: Build with xwidgets support.
Date: Mon, 5 Feb 2018 16:58:39 -0500
User-agent: Mutt/1.9.2 (2017-12-15)

On Sat, Feb 03, 2018 at 05:48:12AM +0800, Alex Vong wrote:
> Hi,
> This patch adds xwidgets support to Emcas. So Emacs can now display GTK
> widgets. In particular, it can display webpages using webkitgtk.
> Also, I use webkitgtk-2.4 instead of webkitgtk, because xwidgets
> requires libwebkitgtk-3.0 instead of libwebkitgtk-4.0 to
> build.

Webkitgtk is very actively researched and exploited for security
problems. If this use of webkitgtk-2.4 would ever handle untrusted
input, it's not very safe. I don't use Emacs so I'm not sure what the
use case is for webkitgtk.

For examples, you can check the security advisories published by the
Webkitgtk team:

They publish an advisory after every release, and there are always
several fixed bugs allowing code execution by whoever supplies the input
(typically from a remote web server).

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