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Red Hat Enterprise Linux: RHSA-2020-3050-01 Low: Cloud-Init Security Fix

red hat
Calendar Grey July 21, 2020
Dist Redhat Esm H88
Red Hat Enterprise Linux 8 has released a cloud-init update, providing essential bug fixes and maintaining a low level of security risk.
An update for cloud-init is now available for Red Hat Enterprise Linux 8

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

Summary

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.
The following packages have been upgraded to a later upstream version: cloud-init (19.4). (BZ#1811912)
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.2 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory security issue Red Hat Enterprise Linux low impact cloud-init

References

https://access.redhat.com/security/cve/CVE-2018-10896 https://access.redhat.com/security/updates/classification/#low https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/index

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: cloud-init-19.4-1.el8.7.src.rpm
noarch: cloud-init-19.4-1.el8.7.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/


Severity
low
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:3050-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3050
Issue date: 2020-07-21

Topic

An update for cloud-init is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Low. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security issue Red Hat Enterprise Linux low impact cloud-init

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - noarch

Bugs Fixed

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

1811912 - [RHEL-8.2.1] cloud-init rebase to 19.4

1831646 - [RHEL8.2.1] Race condition of starting cloud-init and NetworkManager

1844366 - [rhel-8.2.1]Incorrect ds-identify check in cloud-init-generator

1850456 - [RHEL8.2.1] Do not log IMDSv2 token values into cloud-init.log

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