Home/CVE/When instructing cloud-init to set a random password for a new user account, versions before 21.2 would write that passw
CVE

CVE-2021-3429

When instructing cloud-init to set a random password for a new user account, versions before 21.2 would write that passw

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.

MEDIUM · CVSS 5.5 EPSS 0.00061
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-532Insertion of Sensitive Information into Log File
CWE-532Insertion of Sensitive Information into Log File
CWE-532Insertion of Sensitive Information into Log File
▤

Affected Products & Versions

1
canonical cloud-init< 21.2
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · security@ubuntu.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Apr 2023 · 10:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

6
suse-csafopenSUSE-SU-2024:13053-1
suse-csafsuse-fu-2023_3283-1
suse-csafSUSE-SU-2023:2164-1
rhsaRHSA-2021:3081Moderate
rhsaRHSA-2021:3371Moderate
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/canonical/cloud-init/commit/b794d426b9ab43ea9d6371477466070d86e10668Patch
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