Headline

CVE-2022-24729: CKEditor 4.18.0

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. CKEditor4 prior to version 4.18.0 contains a vulnerability in the dialog plugin. The vulnerability allows abuse of a dialog input validator regular expression, which can cause a significant performance drop resulting in a browser tab freeze. A patch is available in version 4.18.0. There are currently no known workarounds.

2 years ago

CVE

Open in Source

#xss #vulnerability #web #dos #git #java #chrome

Mar 16/2022

Security Updates:

Fixed an XSS vulnerability in the core module reported by GitHub Security Lab team member Kevin Backhouse.

Issue summary: The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing a JavaScript code. See CVE-2022-24728 for more details.
Fixed a Regular expression Denial of Service (ReDoS) vulnerability in dialog plugin discovered by the CKEditor 4 team during our regular security audit.

Issue summary: The vulnerability allowed to abuse a dialog input validator regular expression, which could cause a significant performance drop resulting in a browser tab freeze. See CVE-2022-24729 for more details.

You can read more details in the relevant security advisory and contact us if you have more questions.

An upgrade is highly recommended!

Highlights:

Web Spell Checker ended support for WebSpellChecker Dialog on December 31st, 2021. This means the plugin is not supported any longer. Therefore, we decided to deprecate and remove the WebSpellChecker Dialog plugin from CKEditor 4 presets.

We strongly encourage everyone to choose one of the other available spellchecking solutions - Spell Check As You Type (SCAYT) or WProofreader.

Fixed issues:

#5097: [Chrome] Fixed: Incorrect conversion of points to pixels while using CKEDITOR.tools.convertToPx().
#5044: Fixed: select elements with multiple attribute had incorrect styling. Thanks to John R. D’Orazio!

Other changes:

#5093: Deprecated and removed WebSpellChecker Dialog from presets.
#5127: Deprecated the CKEDITOR.rnd property to discourage using it in a security-sensitive context.
#5087: Improved the jQuery adapter by replacing a deprecated jQuery API with existing counterparts. Thanks to Fran Boon!
#5128: Improved the Emoji definitions encoding set by the config.emoji_emojiListUrl configuration option.

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