XSS within CKEditor component in Drupal



Published: 2020-03-18
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Drupal
Web applications / CMS

Vendor Drupal

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) DOM-based cross-site scripting

EUVDB-ID: #VU26196

Risk: Low

CVSSv3.1: 3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

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 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.

Mitigation

Update to version 8.7.12 or 8.8.4.

Vulnerable software versions

Drupal: 8.7.0 - 8.7.11, 8.8.0 - 8.8.3


CPE2.3 External links

http://www.drupal.org/sa-core-2020-001

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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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