Cross-site scripting in Craft CMS



Published: 2021-05-17
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-32470
CWE-ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Craft CMS
Web applications / CMS

Vendor Pixel & Tonic, Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Cross-site scripting

EUVDB-ID: #VU53291

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-32470

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 the "promptForTabName" function. 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 updates from vendor's website.

Vulnerable software versions

Craft CMS: 3.0.0 - 3.6.12.1


CPE2.3 External links

http://github.com/craftcms/cms/blob/develop/CHANGELOG.md#3613---2021-05-04
http://github.com/craftcms/cms/commit/f9378aa154b5f9b64bed3d59cce0c4a8184bf5e6

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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