From: Christoph Pleger <christoph.pleger@cs.uni-dortmund.de>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] lvcreate from a setuid-root binary
Date: Mon, 19 Nov 2018 09:55:07 +0100 [thread overview]
Message-ID: <25b87d17a683075e57f45422ee3ef7f6@cs.uni-dortmund.de> (raw)
In-Reply-To: <20181117002405.GF5291@agk-dp.fab.redhat.com>
Hello,
On 2018-11-17 01:24, Alasdair G Kergon wrote:
> On Fri, Nov 16, 2018 at 02:43:10PM +0100, Christoph Pleger wrote:
>> I get security by checking the real user id at the beginning of the
>> program and aborting the program if that uid does not belong to the
>> only
>> user who is allowed to run the program.
>
> Sounds familiar. Shall I tell you one of those stories?
> ...
> ...
> ...
My program calls getpwuid() with the real user id of the calling user
and then compares this user's name with the name of the one and only
user who is allowed to continue program execution. Do you think that
this can be circumvented?
Regards
Christoph
next prev parent reply other threads:[~2018-11-19 8:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-15 16:39 [linux-lvm] lvcreate from a setuid-root binary Christoph Pleger
2018-11-15 17:57 ` Alasdair G Kergon
2018-11-16 13:43 ` Christoph Pleger
2018-11-16 15:32 ` Zdenek Kabelac
2018-11-16 16:12 ` Christoph Pleger
2018-11-16 17:21 ` Roger Heflin
2018-11-16 15:41 ` Stuart D. Gathman
2018-11-21 9:56 ` Christoph Pleger
2018-11-21 9:58 ` Vladislav Bogdanov
2018-11-21 10:23 ` Christoph Pleger
2018-11-17 0:24 ` Alasdair G Kergon
2018-11-19 8:55 ` Christoph Pleger [this message]
2018-11-19 13:01 ` Alasdair G Kergon
2018-11-19 13:19 ` Bryn M. Reeves
2018-11-19 15:17 ` Christoph Pleger
2018-11-19 15:35 ` Christoph Pleger
[not found] <1044845531.2858991.1542636286779.ref@mail.yahoo.com>
2018-11-19 14:04 ` matthew patton
2018-11-19 15:03 ` Christoph Pleger
[not found] <1479542688.2901829.1542643514135.ref@mail.yahoo.com>
2018-11-19 16:05 ` matthew patton
[not found] <1657965510.4711397.1542904883060.ref@mail.yahoo.com>
2018-11-22 16:41 ` matthew patton
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