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Ubuntu Security Notice USN-4035-1

Ubuntu Security Notice USN-4035-1
Posted Jun 25, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4035-1 - 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. 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. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2018-14662, CVE-2018-16846, CVE-2018-16889, CVE-2019-3821
MD5 | 7cee218e01e7123f9ea9422b17816e34

Ubuntu Security Notice USN-4035-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4035-1
June 25, 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

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

References:
https://usn.ubuntu.com/4035-1
CVE-2018-14662, CVE-2018-16846, CVE-2018-16889, CVE-2019-3821

Package Information:
https://launchpad.net/ubuntu/+source/ceph/13.2.4+dfsg1-0ubuntu2.1
https://launchpad.net/ubuntu/+source/ceph/13.2.4+dfsg1-0ubuntu0.18.10.2
https://launchpad.net/ubuntu/+source/ceph/10.2.11-0ubuntu0.16.04.2

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