Is CVE-2022-21670 in the CISA KEV catalog?

No. CVE-2022-21670 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-21670?

CVE-2022-21670 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2022-21670?

CVE-2022-21670 has an EPSS score of 2.15% (80th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-21670?

Upgrade node-markdown-it on debian 11 to 10.0.0+dfsg-2+deb11u1 or later.

CVE & CISA-KEV Catalog

CVE-2022-21670

MEDIUMEPSS 80th pctl

5.3

CVSS v3

NVD

Description

markdown-it is a Markdown parser. Prior to version 1.3.2, special patterns with length greater than 50 thousand characterss could slow down the parser significantly. Users should upgrade to version 12.3.2 to receive a patch. There are no known workarounds aside from upgrading.

CWE-400Resource Exhaustion CWE-1333

How to fix

Remediation Available

node-markdown-itDebian

Fixed in:10.0.0+dfsg-2+deb11u1CVE-2022-21670

Fixed in:10.0.0+dfsg-6CVE-2022-21670

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

2.15%probability of exploitation in 30 days

80thpercentile

Elevated risk: more likely to be exploited than 80% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Embed a live status badge for CVE-2022-21670

Markdown

[![CVE-2022-21670](https://tridentstack.com/cve/badge/CVE-2022-21670.svg)](https://tridentstack.com/cve/CVE-2022-21670)

HTML

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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 2024-11-21.