openstack/tripleo-heat-templates
Code Issues Proposed changes

Restrict Access to Kernel Message Buffer

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Unprivileged access to the kernel syslog can expose sensitive
kernel address information.

Change-Id: If40f1b883dfde6c7870bf9c463753d037867c9e2
Signed-off-by: zshi <zshi@redhat.com>
This commit is contained in:
zshi 2017-03-20 16:12:32 +08:00
parent e0bd63c826
commit 51c91597fb
2 changed files with 13 additions and 0 deletions
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2
puppet/services/kernel.yaml
View File

@ -56,5 +56,7 @@ outputs:
value: 10000
kernel.pid_max:
value: {get_param: KernelPidMax}
kernel.dmesg_restrict:
value: 1
step_config: |
include ::tripleo::profile::base::kernel

11
releasenotes/notes/restrict-access-to-kernel-message-buffer-809160674b92a073.yaml Normal file
View File

@ -0,0 +1,11 @@
---
upgrade:
- |
The kernel.dmesg_restrict is now set to 1 to prevent exposure of sensitive
kernel address information with unprivileged access. Deployments that set
or depend on values other than 1 for kernel.dmesg_restrict may be affected
by upgrading.
security:
- |
Kernel syslog contains sensitive kernel address information, setting
kernel.dmesg_restrict to avoid unprivileged access to this information.