lkml.org 
[lkml]   [2016]   [May]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/2] Quiet noisy LSM denial when accessing net sysctl
Date
This pair of patches does away with what I believe is a useless denial
audit message when a privileged process initially accesses a net sysctl.

The bug was first discovered when running Go applications under AppArmor
confinement. It can be triggered like so:

$ echo "profile test { file, }" | sudo apparmor_parser -rq

Once the profile is loaded, invoke Go as root under confinement:

$ sudo aa-exec -p test -- go version
go version go1.6.1 linux/amd64

Here's the denial:

audit: type=1400 audit(1462575436.832:29): apparmor="DENIED" operation="capable" profile="test" pid=1157 comm="go" capability=12 capname="net_admin"

The reproducer in minimal form is:

$ sudo aa-exec -p test -- cat /proc/sys/net/core/somaxconn
128

The denial:

audit: type=1400 audit(1462575670.000:29): apparmor="DENIED" operation="capable" profile="test" pid=1161 comm="cat" capability=12 capname="net_admin"

Thanks!

Tyler

\
 
 \ /
  Last update: 2016-05-07 01:21    [W:0.104 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site