Is CVE-2021-21364 in the CISA KEV catalog?

No. CVE-2021-21364 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-21364?

CVE-2021-21364 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-21364?

CVE-2021-21364 has an EPSS score of 0.28% (20th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-21364?

Upgrade swagger-codegen to 2.4.19 or later.

CVE & CISA-KEV Catalog

CVE-2021-21364

MEDIUM

5.3

CVSS v3

NVD

Description

swagger-codegen is an open-source project which contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition. In swagger-codegen before version 2.4.19, on Unix-Like systems, the system temporary directory is shared between all local users. When files/directories are created, the default `umask` settings for the process are respected. As a result, by default, most processes/apis will create files/directories with the permissions `-rw-r--r--` and `drwxr-xr-x` respectively, unless an API that explicitly sets safe file permissions is used. Because this vulnerability impacts generated code, the generated code will remain vulnerable until fixed manually! This vulnerability is fixed in version 2.4.19. Note this is a distinct vulnerability from CVE-2021-21363.

CWE-200Information Exposure CWE-378 CWE-732Incorrect Permission Assignment for Critical Resource

How to fix

Remediation Available

swagger-codegenNVD

Affected:< 2.4.19Fixed in:2.4.19CVE-2021-21364derived from NVD

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 ComplexityHigh

Privileges RequiredLow

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.28%probability of exploitation in 30 days

20thpercentile

Low risk: more likely to be exploited than 20% of all known CVEs.

References

Patch1

github.com

Mitigation1

github.com

Embed a live status badge for CVE-2021-21364

Markdown

[![CVE-2021-21364](https://tridentstack.com/cve/badge/CVE-2021-21364.svg)](https://tridentstack.com/cve/CVE-2021-21364)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-21364"><img src="https://tridentstack.com/cve/badge/CVE-2021-21364.svg" alt="CVE-2021-21364"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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 2024-11-21.