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Fedora 25 : calamares (2016-561a937494)

high Nessus Plugin ID 95448

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Synopsis

The remote Fedora host is missing a security update.

Description

A security update that fixes Calamares bug CAL-405:
https://calamares.io/bugs/browse/CAL-405

When installing with a LUKS-encrypted `/` partition, Calamares was always creating a keyfile to decode `/` and storing it in the initramfs. It did that even with an unencrypted separate `/boot` partition. As a result, the keyfile would be stored in cleartext on the `/boot` partition, and it was possible to unlock the `/` partition without ever entering a passphrase. This completely defeated the security of LUKS.

Please note that this only affects manual partitioning. The automatic partitioning never leaves `/boot` unencrypted (and it is, in fact, recommended to also always encrypt `/boot` when doing manual partitioning).

This update fixes the `dracutlukscfg` module to not add the keyfile to `install_items` in the `dracut` configuration (so that `dracut` will not include it onto the initramfs) if `/boot` is separate and unencrypted.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected calamares package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2016-561a937494

Plugin Details

Severity: High

ID: 95448

File Name: fedora_2016-561a937494.nasl

Version: 1.4

Type: local

Agent: unix

Published: 12/1/2016

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:calamares, cpe:/o:fedoraproject:fedora:25

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 12/1/2016

Vulnerability Publication Date: 12/1/2016

Reference Information