Mageia 8 MGASA-2021-0494 Critical: Cloud-Init Local Access Issue
mageia
October 29, 2021
cloud-init has the ability to generate and set a randomized password for system users
Summary
cloud-init has the ability to generate and set a randomized password for
system users. This functionality is enabled at runtime by passing
cloud-config data such as: 'chpasswd: list: | user1:RANDOM'
When instructing cloud-init to set a random password for a new user
account, versions before 21.1.19 would write that password to the
world-readable log file /var/log/cloud-init-output.log. This could allow a
local user to log in as another user (CVE-2021-3429).
References
- https://bugs.mageia.org/show_bug.cgi?id=28991
- https://lists.debian.org/debian-lts-announce/2021/03/msg00025.html
- https://github.com/canonical/cloud-init/releases/tag/21.2
- https://www.cve.org/CVERecord?id=CVE-2021-3429
Resolution
SRPMS
- 8/core/cloud-init-20.2-2.1.mga8
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Publication date: 29 Oct 2021
URL: https://advisories.mageia.org/MGASA-2021-0494.html
Type: security
CVE: CVE-2021-3429
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