linux-kernel - Re: [PATCH] Crypto_user: Make crypto user API available for all net ns

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <2290757.F5Nm8BLmaV@tauon.chronox.de>
Date:   Thu, 13 Jul 2017 16:51:10 +0200
From:   Stephan Müller <smueller@...onox.de>
To:     Christian Langrock <christian.langrock@...unet.com>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Crypto_user: Make crypto user API available for all net ns

Am Donnerstag, 13. Juli 2017, 16:22:32 CEST schrieb Christian Langrock:

Hi Christian,

> With this patch it's possible to use crypto user API form all
> network namespaces, not only form the initial net ns.

Is this wise?

The crypto_user interface allows root users to change settings in the kernel 
with a global scope. For example, you can deregister ciphers, change the prio 
of ciphers and so on. All of that is visible on a global scale and thus should 
not be possible from namespaces, IMHO.

Ciao
Stephan