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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTNyaDMtd2ZyNC03Nm1q

Regular expression Denial of Service in multiple packages

Impact

A regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0.

Patches

The problem has been recognized and patched. The fix will be available in version 27.0.0.

For more information

Email us at [email protected] if you have any questions or comments about this advisory.

Acknowledgements

The CKEditor 5 team would like to thank Yeting Li for recognizing and reporting these vulnerabilities.

Permalink: https://github.com/advisories/GHSA-3rh3-wfr4-76mj
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTNyaDMtd2ZyNC03Nm1q
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 3 years ago
Updated: about 1 year ago


CVSS Score: 6.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Identifiers: GHSA-3rh3-wfr4-76mj, CVE-2021-21391
References: Repository: https://github.com/ckeditor/ckeditor5
Blast Radius: 23.7

Affected Packages

npm:@ckeditor/ckeditor5-widget
Dependent packages: 234
Dependent repositories: 3,762
Downloads: 1,675,327 last month
Affected Version Ranges: <= 26.0.0
Fixed in: 27.0.0
All affected versions: 0.0.1, 0.1.0, 0.1.1, 0.2.0, 10.0.0, 10.1.0, 10.2.0, 10.3.0, 10.3.1, 11.0.0, 11.0.1, 11.0.2, 11.0.3, 11.0.4, 11.1.0, 15.0.0, 16.0.0, 17.0.0, 18.0.0, 19.0.0, 19.1.0, 20.0.0, 21.0.0, 22.0.0, 23.0.0, 23.1.0, 24.0.0, 25.0.0, 26.0.0
All unaffected versions: 27.0.0, 27.1.0, 28.0.0, 29.0.0, 29.1.0, 29.2.0, 30.0.0, 31.0.0, 31.1.0, 32.0.0, 33.0.0, 34.0.0, 34.1.0, 34.2.0, 35.0.0, 35.0.1, 35.1.0, 35.2.0, 35.2.1, 35.3.0, 35.3.1, 35.3.2, 35.4.0, 36.0.0, 36.0.1, 37.0.0, 37.0.1, 37.1.0, 38.0.0, 38.0.1, 38.1.0, 38.1.1, 39.0.0, 39.0.1, 39.0.2, 40.0.0, 40.1.0, 40.2.0, 41.0.0, 41.1.0, 41.2.0, 41.2.1, 41.3.0, 41.3.1
npm:@ckeditor/ckeditor5-paste-from-office
Dependent packages: 2,427
Dependent repositories: 3,597
Downloads: 1,020,631 last month
Affected Version Ranges: <= 26.0.0
Fixed in: 27.0.0
All affected versions: 0.0.1, 10.0.0, 11.0.0, 11.0.1, 11.0.2, 11.0.3, 11.0.4, 11.1.0, 15.0.0, 16.0.0, 17.0.0, 18.0.0, 19.0.0, 19.0.1, 19.0.2, 20.0.0, 21.0.0, 22.0.0, 23.0.0, 23.1.0, 24.0.0, 25.0.0, 26.0.0
All unaffected versions: 27.0.0, 27.1.0, 28.0.0, 29.0.0, 29.1.0, 29.2.0, 30.0.0, 31.0.0, 31.1.0, 32.0.0, 33.0.0, 34.0.0, 34.1.0, 34.2.0, 35.0.0, 35.0.1, 35.1.0, 35.2.0, 35.2.1, 35.3.0, 35.3.1, 35.3.2, 35.4.0, 36.0.0, 36.0.1, 37.0.0, 37.0.1, 37.1.0, 38.0.0, 38.0.1, 38.1.0, 38.1.1, 39.0.0, 39.0.1, 39.0.2, 40.0.0, 40.1.0, 40.2.0, 41.0.0, 41.1.0, 41.2.0, 41.2.1, 41.3.0, 41.3.1
npm:@ckeditor/ckeditor5-media-embed
Dependent packages: 2,416
Dependent repositories: 3,440
Downloads: 945,691 last month
Affected Version Ranges: <= 26.0.0
Fixed in: 27.0.0
All affected versions: 0.0.1, 10.0.0, 10.1.0, 11.0.0, 11.1.0, 11.1.1, 11.1.2, 11.1.3, 11.1.4, 15.0.0, 16.0.0, 17.0.0, 18.0.0, 19.0.0, 19.1.0, 20.0.0, 21.0.0, 22.0.0, 23.0.0, 23.1.0, 24.0.0, 25.0.0, 26.0.0
All unaffected versions: 27.0.0, 27.1.0, 28.0.0, 29.0.0, 29.1.0, 29.2.0, 30.0.0, 31.0.0, 31.1.0, 32.0.0, 33.0.0, 34.0.0, 34.1.0, 34.2.0, 35.0.0, 35.0.1, 35.1.0, 35.2.0, 35.2.1, 35.3.0, 35.3.1, 35.3.2, 35.4.0, 36.0.0, 36.0.1, 37.0.0, 37.0.1, 37.1.0, 38.0.0, 38.0.1, 38.1.0, 38.1.1, 39.0.0, 39.0.1, 39.0.2, 40.0.0, 40.1.0, 40.2.0, 41.0.0, 41.1.0, 41.2.0, 41.2.1, 41.3.0, 41.3.1
npm:@ckeditor/ckeditor5-markdown-gfm
Dependent packages: 434
Dependent repositories: 258
Downloads: 86,663 last month
Affected Version Ranges: <= 26.0.0
Fixed in: 27.0.0
All affected versions: 0.3.0, 0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.4.4, 10.0.0, 10.0.1, 10.0.2, 10.0.3, 10.0.4, 11.0.0, 11.0.1, 11.0.2, 11.0.3, 11.0.4, 11.0.5, 15.0.0, 16.0.0, 17.0.0, 18.0.0, 19.0.0, 19.0.1, 20.0.0, 21.0.0, 22.0.0, 23.0.0, 23.1.0, 24.0.0, 25.0.0, 26.0.0
All unaffected versions: 27.0.0, 27.1.0, 28.0.0, 29.0.0, 29.1.0, 29.2.0, 30.0.0, 31.0.0, 31.1.0, 32.0.0, 33.0.0, 34.0.0, 34.1.0, 34.2.0, 35.0.0, 35.0.1, 35.1.0, 35.2.0, 35.2.1, 35.3.0, 35.3.1, 35.3.2, 35.4.0, 36.0.0, 36.0.1, 37.0.0, 37.0.1, 37.1.0, 38.0.0, 38.0.1, 38.1.0, 38.1.1, 39.0.0, 39.0.1, 39.0.2, 40.0.0, 40.1.0, 40.2.0, 41.0.0, 41.1.0, 41.2.0, 41.2.1, 41.3.0, 41.3.1
npm:@ckeditor/ckeditor5-list
Dependent packages: 2,841
Dependent repositories: 3,925
Downloads: 1,129,358 last month
Affected Version Ranges: <= 26.0.0
Fixed in: 27.0.0
All affected versions: 0.4.0, 0.5.0, 0.5.1, 0.6.0, 0.6.1, 0.7.0, 10.0.0, 11.0.0, 11.0.1, 11.0.2, 11.0.3, 12.0.0, 12.0.1, 12.0.2, 12.0.3, 12.0.4, 12.1.0, 15.0.0, 16.0.0, 17.0.0, 18.0.0, 19.0.0, 19.0.1, 20.0.0, 21.0.0, 22.0.0, 23.0.0, 23.1.0, 24.0.0, 25.0.0, 26.0.0
All unaffected versions: 27.0.0, 27.1.0, 28.0.0, 29.0.0, 29.1.0, 29.2.0, 30.0.0, 31.0.0, 31.1.0, 32.0.0, 33.0.0, 34.0.0, 34.0.1, 34.1.0, 34.2.0, 35.0.0, 35.0.1, 35.1.0, 35.2.0, 35.2.1, 35.3.0, 35.3.1, 35.3.2, 35.4.0, 36.0.0, 36.0.1, 37.0.0, 37.0.1, 37.1.0, 38.0.0, 38.0.1, 38.1.0, 38.1.1, 39.0.0, 39.0.1, 39.0.2, 40.0.0, 40.1.0, 40.2.0, 41.0.0, 41.1.0, 41.2.0, 41.2.1, 41.3.0, 41.3.1
npm:@ckeditor/ckeditor5-image
Dependent packages: 2,716
Dependent repositories: 4,054
Downloads: 1,079,882 last month
Affected Version Ranges: <= 26.0.0
Fixed in: 27.0.0
All affected versions: 0.2.0, 0.3.0, 0.4.0, 0.5.0, 0.6.0, 0.7.0, 10.0.0, 10.1.0, 10.2.0, 11.0.0, 12.0.0, 13.0.0, 13.0.1, 13.1.0, 13.1.1, 13.1.2, 14.0.0, 15.0.0, 16.0.0, 17.0.0, 18.0.0, 19.0.0, 19.0.1, 20.0.0, 21.0.0, 22.0.0, 23.0.0, 23.1.0, 24.0.0, 25.0.0, 26.0.0
All unaffected versions: 27.0.0, 27.1.0, 28.0.0, 29.0.0, 29.1.0, 29.2.0, 30.0.0, 31.0.0, 31.1.0, 32.0.0, 33.0.0, 34.0.0, 34.1.0, 34.2.0, 35.0.0, 35.0.1, 35.1.0, 35.2.0, 35.2.1, 35.3.0, 35.3.1, 35.3.2, 35.4.0, 36.0.0, 36.0.1, 37.0.0, 37.0.1, 37.1.0, 38.0.0, 38.0.1, 38.1.0, 38.1.1, 39.0.0, 39.0.1, 39.0.2, 40.0.0, 40.1.0, 40.2.0, 41.0.0, 41.1.0, 41.2.0, 41.2.1, 41.3.0, 41.3.1
npm:@ckeditor/ckeditor5-font
Dependent packages: 1,778
Dependent repositories: 1,207
Downloads: 436,197 last month
Affected Version Ranges: <= 26.0.0
Fixed in: 27.0.0
All affected versions: 0.0.1, 10.0.0, 10.0.1, 10.0.2, 10.0.3, 10.0.4, 11.0.0, 11.1.0, 11.1.1, 11.2.0, 11.2.1, 11.2.2, 15.0.0, 16.0.0, 17.0.0, 18.0.0, 19.0.0, 19.0.1, 20.0.0, 21.0.0, 22.0.0, 23.0.0, 23.1.0, 24.0.0, 25.0.0, 26.0.0
All unaffected versions: 27.0.0, 27.1.0, 28.0.0, 29.0.0, 29.1.0, 29.2.0, 30.0.0, 31.0.0, 31.1.0, 32.0.0, 33.0.0, 34.0.0, 34.1.0, 34.2.0, 35.0.0, 35.0.1, 35.1.0, 35.2.0, 35.2.1, 35.3.0, 35.3.1, 35.3.2, 35.4.0, 36.0.0, 36.0.1, 37.0.0, 37.0.1, 37.1.0, 38.0.0, 38.0.1, 38.1.0, 38.1.1, 39.0.0, 39.0.1, 39.0.2, 40.0.0, 40.1.0, 40.2.0, 41.0.0, 41.1.0, 41.2.0, 41.2.1, 41.3.0, 41.3.1
npm:@ckeditor/ckeditor5-engine
Dependent packages: 341
Dependent repositories: 4,485
Downloads: 2,144,098 last month
Affected Version Ranges: <= 26.0.0
Fixed in: 27.0.0
All affected versions: 0.6.0, 0.7.0, 0.8.0, 0.9.0, 0.10.0, 0.11.0, 10.0.0, 10.1.0, 10.2.0, 11.0.0, 12.0.0, 13.0.0, 13.1.0, 13.1.1, 13.2.0, 13.2.1, 14.0.0, 15.0.0, 16.0.0, 17.0.0, 18.0.0, 19.0.0, 19.0.1, 20.0.0, 21.0.0, 22.0.0, 23.0.0, 23.1.0, 24.0.0, 25.0.0, 26.0.0
All unaffected versions: 27.0.0, 27.1.0, 28.0.0, 29.0.0, 29.1.0, 29.2.0, 30.0.0, 31.0.0, 31.1.0, 32.0.0, 33.0.0, 34.0.0, 34.1.0, 34.2.0, 35.0.0, 35.0.1, 35.1.0, 35.2.0, 35.2.1, 35.3.0, 35.3.1, 35.3.2, 35.4.0, 36.0.0, 36.0.1, 37.0.0, 37.0.1, 37.1.0, 38.0.0, 38.0.1, 38.1.0, 38.1.1, 39.0.0, 39.0.1, 39.0.2, 40.0.0, 40.1.0, 40.2.0, 41.0.0, 41.1.0, 41.2.0, 41.2.1, 41.3.0, 41.3.1