Drupal update for CKEditor library



Published: 2021-11-18
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-41165
CVE-2021-41164
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 information about 2 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU58219

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-41165

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 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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Drupal: 9.3.0 alpha1 - 9.3.0 beta1, 9.2.0 - 9.2.8, 9.1.0 - 9.1.13, 8.9.0 - 8.9.19, 9.0.0 - 9.0.14


CPE2.3 External links

http://www.drupal.org/sa-core-2021-011

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Cross-site scripting

EUVDB-ID: #VU58220

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-41164

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 in Advanced Content Filter (ACF) core module. 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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Drupal: 9.3.0 alpha1 - 9.3.0 beta1, 9.2.0 - 9.2.8, 9.1.0 - 9.1.13, 8.9.0 - 8.9.19, 9.0.0 - 9.0.14


CPE2.3 External links

http://www.drupal.org/sa-core-2021-011

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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