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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.3878 cloud-init security, bug fix, and enhancement update 6 November 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: cloud-init Publisher: Red Hat Operating System: Red Hat Impact/Access: Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-8632 CVE-2020-8631 Reference: ESB-2020.1106 ESB-2020.0634 Original Bulletin: https://access.redhat.com/errata/RHSA-2020:4650 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: cloud-init security, bug fix, and enhancement update Advisory ID: RHSA-2020:4650-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:4650 Issue date: 2020-11-03 CVE Names: CVE-2020-8631 CVE-2020-8632 ===================================================================== 1. Summary: 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 impact of Moderate. 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 (v. 8) - 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: Use of random.choice when generating random password (CVE-2020-8631) * cloud-init: Too short random password length in cc_set_password in config/cc_set_passwords.py (CVE-2020-8632) 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 8.3 Release Notes linked from 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/): 1760394 - [RHEL8] cloudinit/net/sysconfig.py write incorrect config for dhcp-stateless openstack subnets 1761598 - [RHEL8] DHCP Stateful - Openstack DHCPv6 instance get no default gateway and is unable to send IPv6 traffic (Network unreachable errors). 1794664 - [RHEL8] swapon fails with "swapfile has holes" when created on a xfs filesystem by cloud-init 1798728 - CVE-2020-8632 cloud-init: Too short random password length in cc_set_password in config/cc_set_passwords.py 1798731 - CVE-2020-8631 cloud-init: Use of random.choice when generating random password 1803095 - [RHEL-8.3.0] cloud-init rebase to 19.4 1803928 - [RHEL8.3] Race condition of starting cloud-init and NetworkManager 1810706 - [RFE] Backport IMDSv2 from cloud-init 19.4+ RHEL 8 1822343 - [RHEL8.3] Do not log IMDSv2 token values into cloud-init.log 1833874 - [rhel-8.3]using root user error should cause a non-zero exit code 1834173 - [rhel-8.3]Incorrect ds-identify check in cloud-init-generator 1839662 - [ESXi][RHEL8.3][cloud-init]ERROR log in cloud-init.log after clone VM on ESXi platform 1840648 - [cloud-init][RHEL-8.2.0] /etc/resolv.conf lose config after reboot (initial instance is ok) 1846240 - [cloud-init test] Cloud-init rebase to 19.4 testing in rhel-8.3.0 6. Package List: Red Hat Enterprise Linux AppStream (v. 8): Source: cloud-init-19.4-11.el8.src.rpm noarch: cloud-init-19.4-11.el8.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-2020-8631 https://access.redhat.com/security/cve/CVE-2020-8632 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.3_release_notes/ 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. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBX6IzQ9zjgjWX9erEAQjcyw/8Cmq3hX00ZEWscBdny0vuiXSvzb6MqNrB SOEU3xrgZtFfuiA2w/3DNbwOVCEDtgOydZWIfnnJclpQKtRBgwONeQzFAGYeXQh9 6tV/HFcwQwGSEXivJhiwUKfm7eRJ3iYVHOI+gdCoTovt047jArX2CylBsjMoOL6F WZ5tE87GlsNPCDN760nuGs9ZLFGMmeT5fipVgRTa3YYq9hY2Rj0DaZGQTRM/iV8K /IHJgaRuDMqVq5Ho18NIFW1PE21va22McPky8OptIujDvOYjaEiZlth7CdzG9KPg 5ZS2FKOG+wSNoly89tSOZ3+BeCw5Gt/O3tKkL7NsnVWZtDwZ8XynT4CEs+9TQChQ 9A5S3GkNe9xx/u4LC7o62Koe1gZQFDwRpAQASp4Un6kCLkruAQIEmeVFmLyuZ0QJ PzAYNvi2tfUWGXri6I6ZV8w/BNhVn2DgYYqSznc8YtMAwJ6LLM6Jo52UFXBoZRGC q9rsE2jxJj37dS2Q9I1027FHW9jaBt293qe6fU5k7vrYkoojvZ3aIQSrMafH/yUM Zf4CSMTe1xz0rPTeb6CK/I7iUW/xrK9mWy11KJMf0FZoxTU7X2DwHiOxZdU6bLEs I8Yur3IYDvwMXcLM/76vvb5YDDuk/14kefBHmLoodyIyWL7s5sJMRvm7d8sNmZQv GKjKvpSl4pE= =he5H - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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