Cross-site scripting in Drupal - CVE-2018-9861
Published: April 19, 2018 / Updated: April 30, 2018
Vulnerability identifier: #VU11919
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2018-9861
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 inside CKEditor when using the image2 plugin. 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
Drupal
Ubuntu
Fedora
ckeditor (Ubuntu package)
ckeditor
drupal8
Ubuntu
Fedora
ckeditor (Ubuntu package)
ckeditor
drupal8
How to mitigate CVE-2018-9861
Update to version 8.4.7 or 8.5.2.
ckeditor (Ubuntu package) - addressed in versions 4.5.7+dfsg-2ubuntu0.18.04.1, 4.12.1+dfsg-1ubuntu0.1, 4.16.0+dfsg-2ubuntu0.1
ckeditor - addressed in versions 4.11.2-1.fc28, 4.11.2-1.fc29
drupal8 - addressed in versions 8.4.8-1.fc27, 8.4.8-1.fc28
ckeditor - addressed in versions 4.11.2-1.fc28, 4.11.2-1.fc29
drupal8 - addressed in versions 8.4.8-1.fc27, 8.4.8-1.fc28