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Ubuntu Security Notice USN-6613-1
January 29, 2024

ceph vulnerability

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

• Ubuntu 23.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS
• Ubuntu 18.04 LTS (Available with Ubuntu Pro)
• Ubuntu 16.04 LTS (Available with Ubuntu Pro)
• Ubuntu 14.04 LTS (Available with Ubuntu Pro)

Summary:

Ceph could be made to bypass authorization checks if it received a
specially crafted request.

Software Description:

• ceph: distributed storage and file system

Details:

Lucas Henry discovered that Ceph incorrectly handled specially
crafted POST requests. An uprivileged user could use this to
bypass Ceph’s authorization checks and upload a file to any bucket.

Update instructions:

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

Ubuntu 23.10:
ceph 18.2.0-0ubuntu3.1
ceph-base 18.2.0-0ubuntu3.1
ceph-common 18.2.0-0ubuntu3.1

Ubuntu 22.04 LTS:
ceph 17.2.6-0ubuntu0.22.04.3
ceph-base 17.2.6-0ubuntu0.22.04.3
ceph-common 17.2.6-0ubuntu0.22.04.3

Ubuntu 20.04 LTS:
ceph 15.2.17-0ubuntu0.20.04.6
ceph-base 15.2.17-0ubuntu0.20.04.6
ceph-common 15.2.17-0ubuntu0.20.04.6

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
ceph 12.2.13-0ubuntu0.18.04.11+esm1
ceph-base 12.2.13-0ubuntu0.18.04.11+esm1
ceph-common 12.2.13-0ubuntu0.18.04.11+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
ceph 10.2.11-0ubuntu0.16.04.3+esm1
ceph-common 10.2.11-0ubuntu0.16.04.3+esm1

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
ceph 0.80.11-0ubuntu1.14.04.4+esm2
ceph-common 0.80.11-0ubuntu1.14.04.4+esm2

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

References:
https://ubuntu.com/security/notices/USN-6613-1
CVE-2023-43040

Package Information:
https://launchpad.net/ubuntu/+source/ceph/18.2.0-0ubuntu3.1
https://launchpad.net/ubuntu/+source/ceph/17.2.6-0ubuntu0.22.04.3
https://launchpad.net/ubuntu/+source/ceph/15.2.17-0ubuntu0.20.04.6