Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS02dmZjLXF2M2YtdnI2Y80hTA

Uncontrolled Resource Consumption in markdown-it

Impact

Special patterns with length > 50K chars can slow down parser significantly.

const md = require('markdown-it')();

md.render(`x ${' '.repeat(150000)} x  \nx`);

Patches

Upgrade to v12.3.2+

Workarounds

No.

References

Fix + test sample: https://github.com/markdown-it/markdown-it/commit/ffc49ab46b5b751cd2be0aabb146f2ef84986101

Permalink: https://github.com/advisories/GHSA-6vfc-qv3f-vr6c
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS02dmZjLXF2M2YtdnI2Y80hTA
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 2 years ago
Updated: 9 months ago

CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Identifiers: GHSA-6vfc-qv3f-vr6c, CVE-2022-21670
References:

• https://github.com/markdown-it/markdown-it/security/advisories/GHSA-6vfc-qv3f-vr6c
• https://github.com/markdown-it/markdown-it/commit/ffc49ab46b5b751cd2be0aabb146f2ef84986101
• https://nvd.nist.gov/vuln/detail/CVE-2022-21670
• https://github.com/advisories/GHSA-6vfc-qv3f-vr6c

Repository: https://github.com/markdown-it/markdown-it
Blast Radius: 28.2

Affected Packages