USN-4035-1: Ceph vulnerabilities

Releases

• Ubuntu 19.04
• Ubuntu 18.10
• Ubuntu 16.04 ESM

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)

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

• 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

• CVE-2018-14662
• CVE-2018-16846
• CVE-2018-16889
• CVE-2019-3821