From: Stephen Smalley <sds@tycho.nsa.gov>
To: David Howells <dhowells@redhat.com>
Cc: Serge Hallyn <serge.hallyn@canonical.com>,
eparis@redhat.com, linux-security-module@vger.kernel.org,
selinux@tycho.nsa.gov, Oleg Nesterov <oleg@redhat.com>,
casey@schaufler-ca.com
Subject: Re: [PATCH 0/9] Open loaders and interpreters with new creds during exec
Date: Mon, 02 May 2011 09:28:31 -0400 [thread overview]
Message-ID: <1304342911.16563.39.camel@moss-pluto> (raw)
In-Reply-To: <21766.1304160537@redhat.com>
On Sat, 2011-04-30 at 11:48 +0100, David Howells wrote:
> Of course, this may not apply to scripts, since we don't normally allow those
> to effect SUID/SGID transitions. Should set-security-label transitions be
> ignored on scripts too (which I think was one of the points Casey was taking
> about)? Should the script interpreter simply reset the credentials to those
> of the current user?
The kernel should allow set-security-label transitions on scripts;
SELinux makes use of such transitions particularly for system
initialization, where the caller is already at least as trusted as the
callee.
--
Stephen Smalley
National Security Agency
--
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next prev parent reply other threads:[~2011-05-02 13:28 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-21 14:30 [PATCH 0/9] Open loaders and interpreters with new creds during exec David Howells
2011-04-21 14:30 ` [PATCH 1/9] TOMOYO: Fix tomoyo_dentry_open() to use the right creds David Howells
2011-04-21 14:30 ` [PATCH 2/9] TOMOYO: Derive the new domain for an exec'd process in tomoyo_bprm_set_creds() David Howells
2011-04-21 14:30 ` [PATCH 3/9] LSM: Permit commit_creds() to take a const pointer David Howells
2011-04-21 14:30 ` [PATCH 4/9] LSM: Make the linux_binfmt creds pointer const and pass creds to bprm_set_creds David Howells
2011-04-21 14:30 ` [PATCH 5/9] LSM: Install the new credentials earlier in the exec procedure David Howells
2011-04-21 14:31 ` [PATCH 6/9] LSM: Pass linux_binprm pointer to kernel_read() so creds are available David Howells
2011-04-21 14:31 ` [PATCH 7/9] LSM: Allow an LSM to indicate that it wants bprm->file reopening with new creds David Howells
2011-04-21 14:31 ` [PATCH 8/9] LSM: Pass linux_binprm pointer to open_exec() so creds are available David Howells
[not found] ` <201104220225.p3M2PjJR020777@www262.sakura.ne.jp>
2011-04-28 15:27 ` David Howells
2011-04-21 14:31 ` [PATCH 9/9] LSM: Use derived creds for accessing an executable's interpreter and binary loader David Howells
2011-04-21 16:12 ` [PATCH 0/9] Open loaders and interpreters with new creds during exec Stephen Smalley
2011-04-21 16:30 ` Daniel J Walsh
2011-04-21 17:32 ` Casey Schaufler
2011-04-21 18:13 ` David Howells
2011-04-21 18:53 ` David Howells
[not found] ` <20110428200218.GB9186@hallyn.com>
2011-04-30 10:48 ` David Howells
2011-05-02 13:28 ` Stephen Smalley [this message]
2011-05-04 12:12 ` David Howells
2011-05-04 13:15 ` David Howells
[not found] ` <20110504144558.GC917@mail.hallyn.com>
2011-05-04 16:27 ` David Howells
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