A flaw was found in the way signature calculation was handled by cephx authentication protocol. An attacker having access to ceph cluster network who is able to alter the message payload was able to bypass signature checks done by cephx protocol. Ceph branches master, mimic, luminous and jewel are believed to be vulnerable.
[
{
"product": "ceph",
"vendor": "Red Hat, Inc.",
"versions": [
{
"status": "affected",
"version": "all versions in branches master, mimic, luminous and jewel"
}
]
}
]
lists.opensuse.org/opensuse-security-announce/2019-04/msg00100.html
packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html
tracker.ceph.com/issues/24837
access.redhat.com/errata/RHSA-2018:2177
access.redhat.com/errata/RHSA-2018:2179
access.redhat.com/errata/RHSA-2018:2261
access.redhat.com/errata/RHSA-2018:2274
bugzilla.redhat.com/show_bug.cgi?id=1576057
github.com/ceph/ceph/commit/8f396cf35a3826044b089141667a196454c0a587
lists.debian.org/debian-lts-announce/2019/03/msg00017.html
www.debian.org/security/2018/dsa-4339