Multiple vulnerabilities in CKEditor



Published: 2022-03-17
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2022-24729
CVE-2022-24728
CWE-ID CWE-185
CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		CKEditor
Web applications / JS libraries

Vendor CKSource

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Incorrect Regular Expression

EUVDB-ID: #VU61427

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-24729

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

CKEditor: 4.0 basic - 4.17.2

External links

http://ckeditor.com/cke4/release/CKEditor-4.18.0
http://github.com/ckeditor/ckeditor4/security/advisories/GHSA-f6rf-9m92-x2hh


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Cross-site scripting

EUVDB-ID: #VU61426

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-24728

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

CKEditor: 4.0 basic - 4.17.2

External links

http://ckeditor.com/cke4/release/CKEditor-4.18.0
http://github.com/ckeditor/ckeditor4/security/advisories/GHSA-4fc4-4p5g-6w89
http://github.com/ckeditor/ckeditor4/commit/d158413449692d920a778503502dcb22881bc949


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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