DOM-based cross-site scripting in CKEditor - #VU26196
Published: March 18, 2020 / Updated: March 26, 2020
Vulnerability identifier: #VU26196
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: N/A
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 within WYSIWYG mode in CKEditor. A remote attacker can trick the victim to follow a specially crafted link 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
Backdrop CMS
Drupal
Remediation
Install updates from vendor's website.
CKEditor - update to 4.14.0
Backdrop CMS - addressed in versions 1.14.4, 1.15.1
Drupal - addressed in versions 8.7.12, 8.8.4
Backdrop CMS - addressed in versions 1.14.4, 1.15.1
Drupal - addressed in versions 8.7.12, 8.8.4