December 2020 - openstack-discuss

[neutron] Drivers meeting agenda
by Slawek Kaplonski 18 Dec '20

18 Dec '20

Hi, On this week's drivers meeting we have 2 RFEs to discuss: * https://bugs.launchpad.net/neutron/+bug/1907089 - new RFE proposed by Lajos, spec is also proposed at https://review.opendev.org/c/openstack/neutron-specs/+/767337 * https://bugs.launchpad.net/neutron/+bug/1905295 - this was discussed last week, Bence provided new informations related to that one so lets get back to it too. See You tomorrow on the meeting :) -- Slawek Kaplonski Principal Software Engineer Red Hat

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[nova] PCI hotplugging
by Mauricio Tavares 18 Dec '20

18 Dec '20

As some of you know, libvirt supports PCI hotplugging[1]. How would that work using nova (or, if there is a better way, I am all ears)? [1]https://www.libvirt.org/pci-hotplug.html

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[cinder] NVMe-oF with TCP transport protocol
by ʂʍɒρƞįł Ҟưȴķɒʁʉɨ 17 Dec '20

17 Dec '20

hello cinder team, I wanted to know if we have support for NVMEoF with TCP transport between servers and the target? Any documentation/reference would be appreciated. Best Regards, Swapnil Kulkarni irc : coolsvap coolsvap at gmail dot com

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[Glance] Cancelling next 2 weekly meetings
by Abhishek Kekane 17 Dec '20

17 Dec '20

Hi All, Due to Christmas and New year, we are cancelling our weekly meetings on 24 and 31 December. The next meeting will be held on 7th January. Ping us on #openstack-glance if you have any queries/doubts. Happy holidays and happy new year in advance. Regards, Abhishek

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[ops][cinder] notice of incorrect default policy value
by Brian Rosmaita 17 Dec '20

17 Dec '20

Hello operators, While reviewing Cinder policies recently, Bug #1908315 [0] was discovered: "Policy group:reset_group_snapshot_status has incorrect checkstring". This policy governs the "Reset a snapshot's status" action [1]. The action is supposed to be admin-only, but the default policy setting is admin-or-owner. This is not a security issue, but it does allow an end user to put a group snapshot that they own into an invalid status, with indeterminate consequences. A fix has been posted for review [2], but if you wish to correct this immediately, you can put the following line into your cinder policy file: "group:reset_group_snapshot_status": "rule:admin_api" More information about the cinder policy file can be found at [3]. [0] https://bugs.launchpad.net/cinder/+bug/1908315 [1] https://docs.openstack.org/api-ref/block-storage/v3/#reset-a-snapshot-s-sta… [2] https://review.opendev.org/c/openstack/cinder/+/767226 [3] https://docs.openstack.org/cinder/latest/configuration/block-storage/sample…

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[cyborg][IRC]Vote for moving cyborg weekly meeting one hour ahead
by yumeng bao 17 Dec '20

17 Dec '20

Hi all, Cyborg weekly meeting is held at #openstack-cyborg IRC channel every Thursday at UTC 0300 (China @11 am Thu; US West Coast @8 pm Wed). For now, most of the attendees are located at China. Attending meeting during 11:00 - 12:00 am for them means giving up partial lunch break time, otherwise they have to give up part of the meeting. This makes it harder to have all the core contributors together in one meeting. As such, we decide to move the meeting time one hour ahead. Please vote for +1/-1, if most cores and attendees agree/disagree, we will make it effective/ineffective. Regards, Yumeng

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[OSSN-0087] Ceph user credential leakage to consumers of OpenStack Manila
by gouthampravi＠gmail.com 17 Dec '20

17 Dec '20

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Ceph user credential leakage to consumers of OpenStack Manila - ------------------------------------------------------------- ### Summary ### OpenStack Manila users can request access on a share to any arbitrary cephx user, including privileged pre-existing users of a Ceph cluster. They can then retrieve access secret keys for these pre-existing ceph users via Manila APIs. A cephx client user name and access secret key are required to mount a Native CephFS manila share. With a secret key, a manila user can impersonate a pre-existing ceph user and gain capabilities to manipulate resources that the manila user was never intended to have access to. It is possible to even obtain the default ceph "admin" user's key in this manner, and execute any commands as the ceph administrator. ### Affected Services / Software ### - - OpenStack Shared File Systems Service (Manila) versions Mitaka (2.0.0) through Victoria (11.0.0) - - Ceph Luminous (<=v12.2.13), Mimic (<=v13.2.10), Nautilus (<=v14.2.15), Octopus (<=v15.2.7) ### Discussion ### OpenStack Manila can provide users with Native CephFS shared file systems. When a user creates a "share" (short for "shared file system") via Manila, a CephFS "subvolume" is created on the Ceph cluster and exported. After creating their share, a user can specify who can have access to the share with the help of "cephx" client user names. A cephx client corresponds to Ceph Client Users [2]. When access is provided, a client user "access key" is returned via manila. A ceph client user account is required to access any ceph resource. This includes interacting with Ceph cluster infrastructure daemons (ceph-mgr, ceph-mds, ceph-mon, ceph-osd) or consuming Ceph storage via RBD, RGW or CephFS. Deployment and orchestration services like ceph-ansible, nfs-ganesha, kolla, tripleo need ceph client users to work, as do OpenStack services such as cinder, manila, glance and nova for their own interactions with Ceph. For the purpose of illustrating this vulnerability, we'll call them "pre-existing" users of the Ceph cluster. Another example of a pre-existing user includes the "admin" user that is created by default on the ceph cluster. In theory, manila's cephx users are no different from a ceph client user. When a manila user requests access to a share, a corresponding ceph user account is created if one already does not exist. If a ceph user account already exists, the existing capabilities of that user are adjusted to provide them permissions to access the manila share in question. There is no reasonable way for this mechanism to know what pre-existing ceph client users must be protected against unauthorized abuse. Therefore there is a risk that a manila user can claim to be a pre-existing ceph user to steal their access secret key. To resolve this issue, the ceph interface that manila uses was patched to no longer allow manila to claim a pre-existing user account that didn't create. By consequence this means that manila users cannot use cephx usernames that correspond to ceph client users that exist outside of manila. ### Recommended Actions ### #. Upgrade your ceph software to the latest patched releases of ceph to take advantage of the fix to this vulnerability. #. Audit cephx access keys provisioned via manila. You may use "ceph auth ls" and ensure that no clients have been compromised. If they have been, you may need to delete and recreate the client credentials to prevent unauthorized access. #. The audit can also be performed on manila by enumerating all CephFS shares and their access rules as a system administrator. If a reserved ceph client username has been used, you may deny access and recreate the client credential on ceph to refresh the access secret. No code changes were necessary in the OpenStack Shared File System service (manila). With an upgraded ceph, when manila users attempt to provide share access to a cephx username that they cannot use, the access rule's "state" attribute is set to "error" because this operation is no longer permitted. ### Patches ### The Ceph community has provided the following patches: Ceph Octopus: https://github.com/ceph/ceph/commit/1b8a634fdcd94dfb3ba650793fb1b6d09af65e05 Ceph Nautilus: https://github.com/ceph/ceph/commit/7e3e4e73783a98bb07ab399438eb3aab41a6fc8b Ceph Luminous: https://github.com/ceph/ceph/commit/956ceb853a58f6b6847b31fac34f2f0228a70579 The fixes are in the latest releases of Ceph Nautilus (14.2.16) and Ceph Octopus (15.2.8). The patch for Luminous was provided as a courtesy to possible users of OpenStack Manila, however the Ceph community no longer produces releases for Luminous or Mimic as they are end of life. See `here for information about ceph releases. <https://docs.ceph.com/en/latest/releases/general/>`_ ### Contacts / References ### Author: - - Pacha Ravi, Goutham gouthamr(a)redhat.com (Red Hat) Credits: - - Garbutt, John john(a)johngarbutt.com (StackHPC) - - Babel, Jahson jahson.babel(a)cc.in2p3.fr (Centre de Calcul de l'IN2P3) This OSSN : https://wiki.openstack.org/wiki/OSSN/OSSN-0087 Original LaunchPad Bug : https://launchpad.net/bugs/1904015 Mailing List : [Security] tag on openstack-discuss(a)lists.openstack.org OpenStack Security Project : https://launchpad.net/~openstack-ossg CVE: CVE-2020-27781 -----BEGIN PGP SIGNATURE----- wsFcBAEBCAAGBQJf2raCAAoJENJP32eYWZR3mREP/ij+So0KHK7dD3WAdcVK 0JdGzwOjX2Bc4/7g5RPzn4RaxZKicsBOWqESCTTBl94oG4XvTax3fW0E6VlL L6XoV+At1cEvptONDoZ0faCSHfTng1J73rHMo9v+cmxmOuEwXReghArS86tS KIeRWviW9hyNmZfhJxuAC9ICR0HglhT5VHqNtAjL5WzoFGMtC4VeJ7e8rf8r PLjvYGOPzNDj8wAn5UvTnJgkT1tbbIZQai4o+QlDJK5eEuEQnwGTUQ/umx/a z2DeuCnDDxJeOFcWEgkDzTQsE6e7dO4FvoIIsZ3u5pA0Rhw31QfpupUsLAYH WhAjt7cImKRTfza/zVuS7PAko2fMmuNHyHEQQh2Y80S4nkdo/WAfUaBft8eO vdNlvunBQA2E7mlK6oxNF22k/pX49N47vVqGttPFA1kNPFg2qLcc8mJIxpjf V4sJVfMO/DuQaU1zTH/P9KsYm/hlyVzLELEvDR43jmWg4p4btZT8Z2OVD80r 9/dRMcbRQl3yq1C2L7yyKVOc6Pw9HJ90ixXpgv7ZT6TbwAPzFe/euITmA6H0 EGzinRg7JmfFFnf/9FBEZJRL46/idMLVNRo2XioA6+o2kngkwSsD+uJTlMFG XQJINZwrbL1xpuh3VGaOI44yCimsQwNGURH2NmZ7uFBKy6CHYXX42ydnQk51 w9qp =o0Lx -----END PGP SIGNATURE-----

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[Cinder] CHAP security
by Kanevsky, Arkady 17 Dec '20

17 Dec '20

Team, As more storage products start supporting CHAP, cinder drivers adding that also that becomes part of cinder.conf. Should we include CHAP support as an optional feature in https://docs.openstack.org/cinder/latest/reference/support-matrix.html? May as security feature? Thanks, Arkady Kanevsky, Ph.D. SP Chief Technologist & DE Dell EMC office of CTO Dell Inc. One Dell Way, MS PS2-91 Round Rock, TX 78682, USA Phone: 512 7204955

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[tc] weekly meeting agenda
by Mohammed Naser 17 Dec '20

17 Dec '20

Hi everyone, Here’s the agenda for our weekly TC meeting. It will happen tomorrow (Thursday the 17th) at 1500 UTC in #openstack-tc and I will be your chair. If you can’t attend, please put your name in the “Apologies for Absence” section. https://wiki.openstack.org/wiki/Meetings/TechnicalCommittee#Next_Meeting * ACTIVE INITIATIVES - Follow up on past action items - Skipping next 2 meetings - Audit SIG list and chairs (diablo_rojo) - Annual report suggestions (diablo_rojo) - X cycle goal selection start - Audit and clean-up tags (gmann) - X cycle release name vote recording (gmann) - CentOS 8 releases are discontinued / switch to CentOS 8 Stream (gmann/yoctozepto) - Open Reviews We'll clean up the agenda tomorrow should it need changes. Thanks, Mohammed -- Mohammed Naser VEXXHOST, Inc.

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[ironic] Securing physical hosts in hostile environments
by Eric K. Miller 17 Dec '20

17 Dec '20

Hi, We have considered ironic for deploying physical hosts for our public cloud platform, but have not found any way to properly secure the hosts, or rather, how to reset a physical host back to factory defaults between uses - such as BIOS and BMC settings. Since users (bad actors) can access the BMC via SMBus, reset BIOS password(s), change firmware versions, etc., there appears to be no proper way to secure a platform. This is especially true when resetting BIOS/BMC configurations since this typically involves shorting a jumper and power cycling a unit (physically removing power from the power supplies - not just a power down from the BMC). Manufacturers have not made this easy/possible, and we have yet to find a commercial device that can assist with this out-of-band. We have actually thought of building our own, but thought we would ask the community first. Thanks! Eric

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