Is CVE-2021-3429 in the CISA KEV catalog?

No. CVE-2021-3429 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3429?

CVE-2021-3429 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-3429?

CVE-2021-3429 has an EPSS score of 0.22% (12th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3429?

Upgrade cloud-init on debian 11 to 20.4.1-2 or later.

CVE & CISA-KEV Catalog

CVE-2021-3429

MEDIUM

5.5

CVSS v3

NVD

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.

CWE-532

How to fix

Remediation Available

cloud-initDebian

Fixed in:20.4.1-2CVE-2021-3429

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.22%probability of exploitation in 30 days

12thpercentile

Low risk: more likely to be exploited than 12% of all known CVEs.

References

Patch1

github.com

Related Vulnerabilities

Other CWE-532 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-1622	Medium	5.3	79%	-	-
CVE-2020-35234	High	7.5	63%	-	Fix
CVE-2023-43261	High	7.5	60%	-	Fix
CVE-2024-20440	High	7.5	51%	-	-
CVE-2018-3609	High	8.1	22%	-	-
CVE-2018-8719	Medium	5.3	16%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-02-05.