USN-4035-1: Ceph vulnerabilities

25 June 2019

ceph vulnerabilities

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

  • Ubuntu 19.04
  • Ubuntu 18.10
  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in Ceph.

Software Description

  • ceph - distributed storage and file system

Details

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)

Update instructions

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

Ubuntu 19.04
ceph - 13.2.4+dfsg1-0ubuntu2.1
ceph-common - 13.2.4+dfsg1-0ubuntu2.1
Ubuntu 18.10
ceph - 13.2.4+dfsg1-0ubuntu0.18.10.2
ceph-common - 13.2.4+dfsg1-0ubuntu0.18.10.2
Ubuntu 16.04 LTS
ceph - 10.2.11-0ubuntu0.16.04.2
ceph-common - 10.2.11-0ubuntu0.16.04.2

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.

References