SB2018122412 - Cross-site scripting in Craft CMS

Description

This security bulletin contains information about 1 security vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2018-20418)

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 passed via "index.php?p=admin/actions/entries/save-entry" when saving a new title from the console tab. 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.

Remediation

Install update from vendor's website.

References

• https://github.com/craftcms/cms/blob/master/CHANGELOG-v3.md
• https://github.com/rdincel1/Craft-CMS-3.0.25---Cross-Site-Scripting
• https://www.exploit-db.com/exploits/46054/
• https://www.raifberkaydincel.com/craft-cms-3-0-25-cross-site-scripting-vulnerability.html