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Date: Fri, 23 Jun 2017 07:37:54 +0200
From: Florian Weimer <>
To:, Simon McVittie <>
Subject: Re: CVE-2017-9780: Flatpak: privilege escalation via
 setuid/world-writable file permissions

On 06/22/2017 11:01 PM, Simon McVittie wrote:
> * If you are using Flatpak to install apps from a third-party vendor,
>   then there is already a trust relationship: the app is sandboxed, but
>   the third-party vendor chooses what parameters are used for the sandbox.

Doesn't this qualify as a vulnerability in its own right?  Flatpak
advertises countermeasures against malicious applications:

Secure, sandboxed applications

Flatpak's sandboxing technology prevents exploits and hinders malicious

But maybe it's like selling a VPN which isn't encrypted.


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