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CVE-2021-26272

Good to know:

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Date: January 26, 2021

It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted URL-like text into the editor, and then press Enter or Space (in the Autolink plugin).

Language: Java

Severity Score

Related Resources (8)

https://www.oracle.com/security-alerts/cpujan2022.html
https://ckeditor.com/blog/CKEditor-4.16-with-improved-image-pasting-High-Contrast-support-and-a-new-color-API/#security-comes-first
https://github.com/ckeditor/ckeditor4
https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-416
https://www.oracle.com//security-alerts/cpujul2021.html
https://nvd.nist.gov/vuln/detail/CVE-2021-26272
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.mend.io/vulnerability-database/CVE-2021-26272

Severity Score

Weakness Type (CWE)

Inclusion of Functionality from Untrusted Control Sphere

CWE-829

Top Fix

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Upgrade Version

Upgrade to version mog33/drupal-composer-advanced-template - dev-8.x-dev;raisinpicker/raisinpicker-profile - v0.4-alpha;raisinpicker/raisinpicker-profile - v0.4.4;ahillio/civibase - 8.4.0-beta15;ahillio/civibase - no_fix;vardot/varbase - 8.8.9;vardot/varbase - 8.x-7.2;vardot/varbase - 8.7.5;vardot/varbase - dev-dependabot/npm_and_yarn/trim-newlines-3.0.1;vardot/varbase - 8.8.12;vardot/varbase - dev-dependabot/npm_and_yarn/word-wrap-1.2.4;vardot/varbase - 8.7.2;vardot/varbase - dev-dependabot/npm_and_yarn/json5-1.0.2;vardot/varbase - 9.0.2;vardot/varbase - dev-dependabot/npm_and_yarn/follow-redirects-1.14.7;vardot/varbase - 8.x-6.2;vardot/varbase - dev-dependabot/npm_and_yarn/npm_and_yarn-7e27cc98d8;ckeditor-full - 4.16.0;drupal-ckeditor-libraries-group/autolink - 4.9.1;ahyadessam/laravel-adminlte - 1.0.5;ahyadessam/laravel-adminlte - no_fix;joomlatools/framework-ckeditor - v1.1.0;csoftech/cms - no_fix;intelliants/subrion - v4.2.0;intelliants/subrion - no_fix;intelliants/subrion - v4.0.0;ckeditor4 - 4.16.0;rotary/rotary-base - 9.0.x-dev;benit/ckeditor-dev - 4.0.0;org.webjars.npm:github-com-ckeditor-ckeditor-dev:no_fix;org.webjars.npm:github-com-ckeditor-ckeditor4:no_fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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