linux-kernel - Re: [RFC 15/20] capabilities: Introduce CAP_INTEGRITY

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]

Date:   Tue, 30 Nov 2021 09:50:14 -0800
From:   Casey Schaufler <casey@...aufler-ca.com>
To:     Stefan Berger <stefanb@...ux.ibm.com>,
        linux-integrity@...r.kernel.org
Cc:     zohar@...ux.ibm.com, serge@...lyn.com,
        christian.brauner@...ntu.com, containers@...ts.linux.dev,
        dmitry.kasatkin@...il.com, ebiederm@...ssion.com,
        krzysztof.struczynski@...wei.com, roberto.sassu@...wei.com,
        mpeters@...hat.com, lhinds@...hat.com, lsturman@...hat.com,
        puiterwi@...hat.com, jejb@...ux.ibm.com, jamjoom@...ibm.com,
        linux-kernel@...r.kernel.org, paul@...l-moore.com, rgb@...hat.com,
        linux-security-module@...r.kernel.org, jmorris@...ei.org,
        Denis Semakin <denis.semakin@...wei.com>,
        Casey Schaufler <casey@...aufler-ca.com>
Subject: Re: [RFC 15/20] capabilities: Introduce CAP_INTEGRITY_ADMIN

On 11/30/2021 9:41 AM, Stefan Berger wrote:
>
> On 11/30/21 12:27, Casey Schaufler wrote:
>> On 11/30/2021 8:06 AM, Stefan Berger wrote:
>>> From: Denis Semakin <denis.semakin@...wei.com>
>>>
>>> This patch introduces CAP_INTEGRITY_ADMIN, a new capability that allows
>>> to setup IMA (Integrity Measurement Architecture) policies per container
>>> for non-root users.
>>
>> Why not use CAP_MAC_ADMIN? IMA is a mandatory policy. The scope
>> is system security administration. It seems to fit your needs.
>> I introduced CAP_MAC_ADMIN for Smack, and believe that IMA using
>> it would be completely appropriate.
>
> Fine by me. I suppose we could be reusing it later on also for setting file extended attributes for IMA?

Yes. That would be completely consistent with the intention and the
Smack implementation.

>
>    Stefan
>
>