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Status published
Medium
CVE-2021-3429
sensitive data exposure in cloud-init logs
Vulnerability Description
When instructing cloud-init to set a random password for a new user account, versions before 21.2 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Carl Pearson
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Affected Vendor
Canonical Ltd.
View all reports →Affected Software
cloud-init
Vulnerable Versions:
0
Timeline
Official Publish:
April 19th, 2023
Last Modified:
February 5th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N