SB2019071709 - Stored XSS in Coming Soon Page & Maintenance Mode plugin for WordPress

Description

This security bulletin contains information about 1 security vulnerability.

1) Stored cross-site scripting (CVE-ID: N/A)

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.

Affected variables are:

• logo_width
•  logo_height
•  rcsp_logo_url
•  home_sec_link_txt
•  rcsp_headline rcsp_description

Remediation

Install update from vendor's website.

References

• https://plugins.trac.wordpress.org/changeset/2123149/responsive-coming-soon
• https://plugins.trac.wordpress.org/changeset/2121321/responsive-coming-soon
• https://blog.nintechnet.com/unauthenticated-stored-xss-in-wordpress-coming-soon-page-and-maintenance...