lkml.org 
[lkml]   [2018]   [Mar]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] audit: add containerid support for IMA-audit
From
Date
On Mon, 2018-03-05 at 08:50 -0500, Richard Guy Briggs wrote:
> On 2018-03-05 08:43, Mimi Zohar wrote:
> > Hi Richard,
> >
> > This patch has been compiled, but not runtime tested.
>
> Ok, great, thank you. I assume you are offering this patch to be
> included in this patchset?

Yes, thank you.

> I'll have a look to see where it fits in the
> IMA record. It might be better if it were an AUDIT_CONTAINER_INFO
> auxiliary record, but I'll have a look at the circumstances of the
> event. Can you suggest a procedure to test it?

Like IMA-measurement and IMA-appraisal, IMA-audit is enabled based on
policy. The example IMA policy, below, includes IMA-audit messages for
files executed. 'cat' the policy to /sys/kernel/security/ima/policy.

/etc/ima/ima-policy:
audit func=BPRM_CHECK

There's a FireEye blog titled "Extending Linux Executable Logging With
The Integrity Measurement Architecture"* that explains how to augment
their existing system security analytics with file hashes.

https://www.fireeye.com/blog/threat-research/2016/11/extending_linux
_exec.html


Mimi

>
> > ---
> >
> > If the containerid is defined, include it in the IMA-audit record.
> >
> > Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
> > ---
> > security/integrity/ima/ima_api.c | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c
> > index 33b4458cdbef..41d29a06f28f 100644
> > --- a/security/integrity/ima/ima_api.c
> > +++ b/security/integrity/ima/ima_api.c
> > @@ -335,6 +335,9 @@ void ima_audit_measurement(struct integrity_iint_cache *iint,
> > audit_log_untrustedstring(ab, algo_hash);
> >
> > audit_log_task_info(ab, current);
> > + if (audit_containerid_set(current))
> > + audit_log_format(ab, " contid=%llu",
> > + audit_get_containerid(current));
> > audit_log_end(ab);
> >
> > iint->flags |= IMA_AUDITED;
> > --
> > 2.7.5
> >
>
> - RGB
>
> --
> Richard Guy Briggs <rgb@redhat.com>
> Sr. S/W Engineer, Kernel Security, Base Operating Systems
> Remote, Ottawa, Red Hat Canada
> IRC: rgb, SunRaycer
> Voice: +1.647.777.2635, Internal: (81) 32635
>

\
 
 \ /
  Last update: 2018-03-05 15:25    [W:0.158 / U:5.280 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site