Cross-site scripting in CKEditor library in Drupal



Published: 2021-05-27 | Updated: 2021-06-15
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-33829
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) Cross-site scripting

EUVDB-ID: #VU53604

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-33829

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. 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

Install update from vendor's website.

Vulnerable software versions

Drupal: 9.0.0 - 9.0.13, 8.9.0 - 8.9.15, 9.1.0 - 9.1.8


CPE2.3 External links

http://www.drupal.org/sa-core-2021-003

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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