Cross-site scripting in CKEditor - CVE-2021-41165

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Main Vulnerability Database Vulnerabilities #VU58219

Cross-site scripting in CKEditor - CVE-2021-41165

Published: November 18, 2021


Vulnerability identifier: #VU58219
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2021-41165
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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 when processing HTML comments. 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.


Affected software

CKEditor
Backdrop CMS
Drupal
Oracle Banking Party Management
IBM Sterling B2B Integrator
Oracle Banking APIs
Fedora
PeopleSoft Enterprise PeopleTools
Oracle Agile PLM Framework
IBM Engineering Requirements Management DOORS Next
Oracle Banking Digital Experience
Oracle Commerce Guided Search
Oracle WebCenter Portal
ckeditor
Oracle Application Express

How to mitigate CVE-2021-41165

Install updates from vendor's website.

CKEditor - update to 4.17.0
Backdrop CMS - addressed in versions 1.19.5, 1.20.2
IBM Sterling B2B Integrator - addressed in versions 6.0.3.7, 6.1.0.6, 6.1.1.2, 6.1.2.1, 6.1.2.6, 6.2.0.3
Drupal - addressed in versions 8.9.20, 9.1.14, 9.2.9
IBM Engineering Requirements Management DOORS Next - update to 9.7.2.8
ckeditor - addressed in versions 4.20.0-1.el7, 4.20.0-1.fc36, 4.20.0-1.fc37
Oracle Application Express - update to 22.1.0

External References

Related Security Bulletins