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CVE-2022-21670— Uncontrolled Resource Consumption in markdown-it

Quick assessment

Affected
markdown-it markdown-it
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Markdown-It是一个 Markdown 解析器。 Markdown-It存在安全漏洞，该漏洞源于Markdown—它是一个Markdown解析器。在1.3.2版本之前，长度大于5万个字符的特殊模式会显著降低解析器的速度。用户应该升级到12.3.2版本以接收补丁。除了升级之外，没有已知的变通办法。

CVSS 5.3 · Medium EPSS 2.28% · P83

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2022-21670

Vulnerability Information
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Vulnerability Title
Uncontrolled Resource Consumption in markdown-it
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Markdown-It 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Markdown-It是一个 Markdown 解析器。 Markdown-It存在安全漏洞，该漏洞源于Markdown—它是一个Markdown解析器。在1.3.2版本之前，长度大于5万个字符的特殊模式会显著降低解析器的速度。用户应该升级到12.3.2版本以接收补丁。除了升级之外，没有已知的变通办法。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
markdown-it markdown-it < 12.3.2 -

II. Public POCs for CVE-2022-21670

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III. Intelligence Information for CVE-2022-21670

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Patches & Fixes for CVE-2022-21670 (1)

Vendor Advisories for CVE-2022-21670 (1)

IV. Related Vulnerabilities

Same product: markdown-it
Same vendor: markdown-it
Same weakness: CWE-400

V. Comments for CVE-2022-21670

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