SB2022031702 - Multiple vulnerabilities in CKEditor

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Incorrect Regular Expression (CVE-ID: CVE-2022-24729)

The vulnerability allows a remote attacker to perform regular expression denial of service attack.

The vulnerability exists due to improper input validation in CKEditor 4 dialog plugin. A remote attacker can pass specially crafted input to the application and perform regular expression denial of service (ReDoS) attack.

2) Cross-site scripting (CVE-ID: CVE-2022-24728)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the core HTML processing module. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install update from vendor's website.

References

• https://ckeditor.com/cke4/release/CKEditor-4.18.0
• https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-f6rf-9m92-x2hh
• https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-4fc4-4p5g-6w89
• https://github.com/ckeditor/ckeditor4/commit/d158413449692d920a778503502dcb22881bc949