CVE-2021-3429: sensitive data exposure in cloud-init logs
First published: Wed Apr 19 2023(Updated: )
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.
Credit: security@ubuntu.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Canonical cloud-init | <21.2 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-3429.
What is the severity of CVE-2021-3429?
The severity of CVE-2021-3429 is medium with a CVSS score of 5.5.
How does CVE-2021-3429 affect the software?
CVE-2021-3429 affects versions before 21.2 of the Canonical Cloud-init software.
What is the impact of CVE-2021-3429?
CVE-2021-3429 allows a local user to log in as another user by accessing the world-readable log file.
How can I fix CVE-2021-3429?
To fix CVE-2021-3429, you should upgrade to version 21.2 or newer of the Canonical Cloud-init software.
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- canonical/canonical cloud-init