U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

CVE-2021-3429 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score matches with CNA score
CNA:  Canonical Ltd.
Base Score:  5.5 MEDIUM
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

ADP:  CISA-ADP
Base Score:  5.5 MEDIUM
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
https://github.com/canonical/cloud-init/commit/b794d426b9ab43ea9d6371477466070d86e10668 Patch 
https://github.com/canonical/cloud-init/commit/b794d426b9ab43ea9d6371477466070d86e10668 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-532 Insertion of Sensitive Information into Log File cwe source acceptance level NIST   CISA-ADP   Canonical Ltd.  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:canonical:cloud-init:*:*:*:*:*:*:*:*
   Show Matching CPE(s)
Up to (excluding)
21.2

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-3429
NVD Published Date:
04/19/2023
NVD Last Modified:
02/05/2025
Source:
Canonical Ltd.