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USN-4035-1: Ceph vulnerabilities

25 June 2019

Several security issues were fixed in Ceph.

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Releases

Packages

  • 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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 19.04
Ubuntu 18.10
Ubuntu 16.04

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