Bug 811807
Summary: | 3.1 - beta3 - vdsm: enable nwfilter | ||
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Product: | Red Hat Enterprise Linux 6 | Reporter: | Douglas Schilling Landgraf <dougsland> |
Component: | vdsm | Assignee: | Moti Asayag <masayag> |
Status: | CLOSED ERRATA | QA Contact: | Meni Yakove <myakove> |
Severity: | high | Docs Contact: | |
Priority: | high | ||
Version: | 6.4 | CC: | abaron, aburden, bazulay, cpelland, danken, harty, iheim, ilvovsky, jbiddle, lpeer, mavital, sgrinber, syeghiay, ykaul, zdover |
Target Milestone: | beta | Keywords: | FutureFeature |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | network | ||
Fixed In Version: | vdsm-4.9.6-32.0 | Doc Type: | Enhancement |
Doc Text: |
Previously, virtual machines running on the host or vNIC hot-plug were vulnerable to spoof attacks unless network filter rules were enabled. This meant that virtual machines were able to impersonate other virtual machines, and that they could cause virtual machine traffic to be rerouted to destinations other than those intended by the Red Hat Entperprise Virtualization environment. VDSM now defines a custom rule called vdsm-no-mac-spoofing on libvirt nw-filter, which is comprised of two rules: no-mac-spoofing and no-arp-mac-spoofing. VDSM exposes the option to use the vdsm-no-mac-spoofing filter when running a virtual machine or when hot-plug vNIC is invoked. As a result, when VDSM is provided with the filter to be used when running virtual machines or activating vNICs, it now instructs libvirt to enforce the filters for the vNICs by defining ebtables rules that control traffic and prevent spoofing.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2012-12-04 18:57:20 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | |||
Bug Blocks: | 809814 |
Description
Douglas Schilling Landgraf
2012-04-12 02:32:50 UTC
Since RHEL 6.3 External Beta has begun, and this bug remains unresolved, it has been rejected as it is not proposed as exception or blocker. Red Hat invites you to ask your support representative to propose this request, if appropriate and relevant, in the next release of Red Hat Enterprise Linux. (In reply to comment #0) > Description of problem: > > As default vdsm should enable nwfilter. All virtual machines will be > started with no-arp-spoofing/no-ip-spoofing/no-mac-spoofing. However, Just note that no-ip-spoofing should not be implemented at this stage. Suggested patch: http://gerrit.ovirt.org/#/c/7354/ Verified on vdsm-4.9.6-34.0.el6_3.x86_64 Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHSA-2012-1508.html FYI, You cant run Redhat 7 LXC with mac filtering on, it stops the guests at the bridge. Prob needs to be in the ERRATA also. |