From: "Dmitry V. Levin" <ldv@altlinux.org>
To: ALT Linux Sisyphus discussion list <sisyphus@lists.altlinux.org>
Subject: Re: [sisyphus] temporary root privileges from local process
Date: Thu, 18 May 2006 18:52:31 +0400
Message-ID: <20060518145231.GA29158@basalt.office.altlinux.org> (raw)
In-Reply-To: <200605181741.52308.sisyphus@atlantic-link.com.ua>
[-- Attachment #1: Type: text/plain, Size: 736 bytes --]
On Thu, May 18, 2006 at 05:41:52PM +0300, Vadym Kononenko wrote:
> четвер 18 травень 2006 15:17, Dmitry V. Levin написав:
> > int main()
> >
> > > {
> > > if (geteuid() != 0) exit(1);
> > >
> > > setuid(0);
> > >
> > > return system("/sbin/service bluetooth reload");
> > > }
> >
> > Это instant root, т.е. запускающий эту привилегированную программу
> > пользователь может не напрягаясь получить права setuid(0).
>
> Я так понимаю, это из-за запуска шелла с рутовыми правами? Тогда следующий
> вариант должен это исправлять:
> return execl("/sbin/service" , "service", "bluetooth", "reload", NULL);
> ?
/sbin/service - это shell-скрипт.
Как минимум вам нужно использовать execle.
--
ldv
[-- Attachment #2: Type: application/pgp-signature, Size: 191 bytes --]
next prev parent reply other threads:[~2006-05-18 14:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-17 17:52 Vadym Kononenko
2006-05-17 22:07 ` Dmitry V. Levin
2006-05-18 11:37 ` Vadym Kononenko
2006-05-18 12:17 ` Dmitry V. Levin
2006-05-18 14:41 ` Vadym Kononenko
2006-05-18 14:52 ` Dmitry V. Levin [this message]
2006-05-19 9:06 ` Vadym Kononenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20060518145231.GA29158@basalt.office.altlinux.org \
--to=ldv@altlinux.org \
--cc=sisyphus@lists.altlinux.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
ALT Linux Sisyphus discussions
This inbox may be cloned and mirrored by anyone:
git clone --mirror http://lore.altlinux.org/sisyphus/0 sisyphus/git/0.git
# If you have public-inbox 1.1+ installed, you may
# initialize and index your mirror using the following commands:
public-inbox-init -V2 sisyphus sisyphus/ http://lore.altlinux.org/sisyphus \
sisyphus@altlinux.ru sisyphus@altlinux.org sisyphus@lists.altlinux.org sisyphus@lists.altlinux.ru sisyphus@lists.altlinux.com sisyphus@linuxteam.iplabs.ru sisyphus@list.linux-os.ru
public-inbox-index sisyphus
Example config snippet for mirrors.
Newsgroup available over NNTP:
nntp://lore.altlinux.org/org.altlinux.lists.sisyphus
AGPL code for this site: git clone https://public-inbox.org/public-inbox.git