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From: "Vladimir D. Seleznev" <vseleznv@altlinux.org>
To: ALT Linux Sisyphus discussions <sisyphus@lists.altlinux.org>
Subject: Re: [sisyphus] electron v 5.0 and user namespaces feature
Date: Tue, 22 Oct 2019 01:56:01 +0300
Message-ID: <20191021225601.GA632442@portlab> (raw)
In-Reply-To: <CAN5SjAD4ysbb_TQ4FJGCOXUU8TmLzrYd4XNBUqvVncvXiWoNOg@mail.gmail.com>

On Tue, Oct 22, 2019 at 01:30:36AM +0300, Michael Bykov wrote:
> Салют,
> 
> в electron v.5.0 добавили запуск renreder-процесса в sandboxe, для
> безобасности, чтобы было не хуже, чем в вебе.
> 
> Но при старте возникает ошибка:
> 
> $ npm start
> 
> [27373:1022/003935.785013:FATAL:setuid_sandbox_host.cc(157)] The SUID
> sandbox helper binary was found, but is not configured correctly.
> Rather than run without sandboxing I'm aborting now. You need to make
> sure that /home/michael/tmp/sindresorhus/node_modules/electron/dist/chrome-sandbox
> is owned by root and has mode 4755.
> 
> Отлично, говорят, лечится
> 
> $ cd node_modules/electron/dist
> $ sudo chown root chrome-sandbox
> $ sudo chmod 4755 chrome-sandbox
> 
> Тут у всех Линуксов все должно работать, но у нас (и в Arch) - опять ошибка
> $ npm start
> 
> The setuid sandbox is not running as root. Common causes:
>   * An unprivileged process using ptrace on it, like a debugger.
>   * A parent process set prctl(PR_SET_NO_NEW_PRIVS, ...)
> Failed to move to new namespace: PID namespaces supported, Network
> namespace supported, but failed: errno = Operation not permitted
> 
> Отлично, говорят лечится
> 
> https://github.com/electron/electron/issues/17972:
> 
> $ sudo sysctl kernel.unprivileged_userns_clone=1
> 
> или https://github.com/jessfraz/dockerfiles/issues/65#issuecomment-266532289:
> 
> $ echo 'kernel.unprivileged_userns_clone=1' > /etc/sysctl.d/00-local-userns.conf
> $ service procps restart
> 
> Но у нас такие штуки не проходят, естественно.
> sysctl: cannot stat /proc/sys/kernel/unprivileged_userns_clone: No
> such file or directory
> 
> И как быть?
> 
> Вот что они пишут:
> ------------
> Here's an article I found describing the background of why it's not
> enabled by default: Controlling access to user namespaces and here's
> how to enable it (from Enable user namespaces in Debian kernel):
> https://lwn.net/Articles/673597/
> http://superuser.com/questions/1094597/enable-user-namespaces-in-debian-kernel
> -------------
> 
> У меня p8 + Сизиф:
> 
> $ uname -a
>                                 (git)-[master]
> Linux asus 4.9.133-std-def-alt0.M80P.1 #1 SMP Mon Oct 15 16:46:38 UTC
> 2018 x86_64 GNU/Linux
> 
> Может быть, нужен какой-то более свежий кернел? Может, в p9 это решено уже?
> 
> Где про эти юзер-неймспейсы у нас в Альте прочитать-узнать?

sysctl kernel.userns_restrict=0

-- 
   С уважением,
   Владимир Селезнев


  reply	other threads:[~2019-10-21 22:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-21 22:30 Michael Bykov
2019-10-21 22:56 ` Vladimir D. Seleznev [this message]
2019-10-22  9:23   ` Michael Bykov
2019-10-23 22:06 ` Ivan Zakharyaschev

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