A Ceph security update has been released for Ubuntu Linux 19.10 and 18.04 LTS.

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Ubuntu Security Notice USN-4304-1
March 17, 2020

ceph vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10
- Ubuntu 18.04 LTS

Summary:

Ceph could be made to stop responding if it received specially crafted
network traffic.

Software Description:
- ceph: distributed storage and file system

Details:

Or Friedman discovered that Ceph incorrectly handled disconnects. A remote
authenticated attacker could possibly use this issue to cause Ceph to
consume resources, leading to a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.10:
ceph 14.2.4-0ubuntu0.19.10.2
ceph-base 14.2.4-0ubuntu0.19.10.2
ceph-common 14.2.4-0ubuntu0.19.10.2

Ubuntu 18.04 LTS:
ceph 12.2.12-0ubuntu0.18.04.5
ceph-base 12.2.12-0ubuntu0.18.04.5
ceph-common 12.2.12-0ubuntu0.18.04.5

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/4304-1
CVE-2020-1700

Package Information:
  https://launchpad.net/ubuntu/+source/ceph/14.2.4-0ubuntu0.19.10.2
  https://launchpad.net/ubuntu/+source/ceph/12.2.12-0ubuntu0.18.04.5