Operating System:

[RedHat]

Published:

09 September 2020

Protect yourself against future threats.

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.3083
                        cloud-init security update
                             9 September 2020

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           cloud-init
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 8
Impact/Access:     Provide Misleading Information -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-10896  

Reference:         ESB-2020.2506

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2020:3644

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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Low: cloud-init security update
Advisory ID:       RHSA-2020:3644-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:3644
Issue date:        2020-09-08
CVE Names:         CVE-2018-10896 
=====================================================================

1. Summary:

An update for cloud-init is now available for Red Hat Enterprise Linux 8.2
Extended Update Support.

Red Hat Product Security has rated this update as having a security impact
of Low. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream EUS (v. 8.2) - noarch

3. Description:

The cloud-init packages provide a set of init scripts for cloud instances.
Cloud instances need special scripts to run during initialization to
retrieve and install SSH keys, and to let the user run various scripts.

Security Fix(es):

* cloud-init: default configuration disabled deletion of SSH host keys
(CVE-2018-10896)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1598831 - CVE-2018-10896 cloud-init: default configuration disabled deletion of SSH host keys

6. Package List:

Red Hat Enterprise Linux AppStream EUS (v. 8.2):

Source:
cloud-init-18.5-12.el8_2.3.src.rpm

noarch:
cloud-init-18.5-12.el8_2.3.noarch.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2018-10896
https://access.redhat.com/security/updates/classification/#low

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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