Headline
CVE-2022-0670: v17.2.2 Quincy released - Ceph
A flaw was found in Openstack manilla owning a Ceph File system "share", which enables the owner to read/write any manilla share or entire file system. The vulnerability is due to a bug in the “volumes” plugin in Ceph Manager. This allows an attacker to compromise Confidentiality and Integrity of a file system. Fixed in RHCS 5.2 and Ceph 17.2.2.
This is a hotfix release addressing two security flaws. We recommend all users update to this release.
Notable Changes ¶
Users who were running OpenStack Manila to export native CephFS, who upgraded their Ceph cluster from Nautilus (or earlier) to a later major version, were vulnerable to an attack by malicious users. The vulnerability allowed users to obtain access to arbitrary portions of the CephFS filesystem hierarchy, instead of being properly restricted to their own subvolumes. The vulnerability is due to a bug in the “volumes” plugin in Ceph Manager. This plugin is responsible for managing Ceph File System subvolumes which are used by OpenStack Manila services as a way to provide shares to Manila users.
With this hotfix, the vulnerability is fixed. Administrators who are concerned they may have been impacted should audit the CephX keys in their cluster for proper path restrictions.
Again, this vulnerability only impacts OpenStack Manila clusters which provided native CephFS access to their users.
A regression made it possible to dereference a null pointer for for s3website requests that don’t refer to a bucket resulting in an RGW segfault.
Changelog ¶
mgr/volumes: Fix subvolume discover during upgrade (CVE-2022-0670, Kotresh HR)
mgr/volumes: V2 Fix for test_subvolume_retain_snapshot_invalid_recreate (CVE-2022-0670, Kotresh HR)
qa: validate subvolume discover on upgrade (Kotresh HR)
rgw: s3website check for bucket before retargeting (Seena Fallah)
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