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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.3385 cloud-init security, bug fix, and enhancement update 30 September 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: cloud-init Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 7 Impact/Access: Reduced Security -- Existing Account Provide Misleading Information -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2020-8632 CVE-2020-8631 CVE-2018-10896 Reference: ESB-2020.3083 ESB-2020.2506 ESB-2020.0798 ESB-2020.0634 Original Bulletin: https://access.redhat.com/errata/RHSA-2020:3898 - --------------------------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-2020:3898-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:3898 Issue date: 2020-09-29 CVE Names: CVE-2018-10896 CVE-2020-8631 CVE-2020-8632 ===================================================================== 1. Summary: An update for cloud-init is now available for Red Hat Enterprise Linux 7. 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 Server (v. 7) - ppc64, ppc64le, s390x, x86_64 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. The following packages have been upgraded to a later upstream version: cloud-init (19.4). (BZ#1803094) 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) * 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 7.9 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/): 1574338 - CVE-2018-10896 cloud-init: default configuration disabled deletion of SSH host keys [rhel-7] 1598831 - CVE-2018-10896 cloud-init: default configuration disabled deletion of SSH host keys 1748015 - [cloud-init][RHEL7] /etc/resolv.conf lose config after reboot (initial instance is ok) 1772505 - [RHEL7] swapon fails with "swapfile has holes" when created on a xfs filesystem by cloud-init 1793652 - Support for AWS IMDS v2 (available in cloud-init 19.4) 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 1803094 - [RHEL-7.9] cloud-init rebase to 19.4 1821679 - [cloud-init test] Cloud-init rebase to 19.4 testing in rhel-7.9 1821999 - [RHEL7.9] Do not log IMDSv2 token values into cloud-init.log 6. Package List: Red Hat Enterprise Linux Server (v. 7): Source: cloud-init-19.4-7.el7.src.rpm ppc64: cloud-init-19.4-7.el7.ppc64.rpm ppc64le: cloud-init-19.4-7.el7.ppc64le.rpm s390x: cloud-init-19.4-7.el7.s390x.rpm x86_64: cloud-init-19.4-7.el7.x86_64.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/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/7/html/7.9_release_notes/index 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 iQIVAwUBX3OhN9zjgjWX9erEAQhbURAAoNVTaadDD796M5CfkDfE2/7diGhTeVxe Enq32Xtu1RMU92/Ve4u/G/S8I+B1Qn6hOqyoEBPgK4vM5nkD8yZN0qi8uvSDfmey iKOP6Ikxx83hEhWJ8fqcOtKrWTdTTowlA+5lMW4wz3d1WcfNm8zs61P5t9OR9S5a tk+lj6mZjLlC9f2HSQBElDfIvPB3GEf7MeEy297iaZ1CsQ+HKVaynKPabOFKB4JT umI+NEuLvujkz88kL7RDIb1lilElK+Q5wWWvgy8sTbpxFUhk0/JE5gRZSqVjR3BI 7bMO4fn2gKczSmFgWr/C5Lk+OzUN2uPyXc5bqzxj1P4Y8E0OLW1tYnvBuAry5jzv 0GUPVLZT00uUplsigwsaHa2ICIWFpf4IMhHKfOA2L2REXQm4cW0s992fOAGQZClB HcNzLZ5+CH/ibCWOJhpFEtVYwOSV/HmkkyAZIVHIcMAu1SkbsCznNqF0i8iz/Xi6 s2tsJ8ONDt9rKwyOZXX6+u34AofXEauo4YxrG0X084x6it6sHfWZ43NC2lbuoh2g LZIDMbYY38c0pjtH87o78SPydN2mDvAA2bR0SYkCqQ7LfmwEzf+/zdo2QuMFdmsb 0QlK6xDbWIhWy50U717CCOzvSJb01q3G9Rehfu4XTj2BdLfL2M9fhsz41JUthlmz ZpbmdScV2oo= =XOml - -----END PGP SIGNATURE----- - -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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