Several security issues were fixed in Ceph.
It was discovered that Ceph incorrectly handled read only permissions. An authenticated attacker could use this issue to obtain dm-crypt encryption keys. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-14662)
25 June 2019
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Ceph.
It was discovered that Ceph incorrectly handled read only permissions. An authenticated attacker could use this issue to obtain dm-crypt encryption keys. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-14662)
It was discovered that Ceph incorrectly handled certain OMAPs holding bucket indices. An authenticated attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-16846)
It was discovered that Ceph incorrectly sanitized certain debug logs. A local attacker could possibly use this issue to obtain encryption key information. This issue was only addressed in Ubuntu 18.10 and Ubuntu 19.04. (CVE-2018-16889)
It was discovered that Ceph incorrectly handled certain civetweb requests. A remote attacker could possibly use this issue to consume resources, leading to a denial of service. This issue only affected Ubuntu 18.10 and Ubuntu 19.04. (CVE-2019-3821)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.