CVE-2021-3429

sensitive data exposure in cloud-init logs

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.05%
Affected: Canonical Ltd. cloud-init
Published at:
Updated at:

References

Link Tags
https://github.com/canonical/cloud-init/commit/b794d426b9ab43ea9d6371477466070d86e10668 patch

Frequently Asked Questions

What is the severity of CVE-2021-3429?
CVE-2021-3429 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3429?
To fix CVE-2021-3429, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3429 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-3429 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3429?
CVE-2021-3429 affects Canonical Ltd. cloud-init.
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