Vulnerability in maxfoundry Social Share Buttons

[ Description ]Official description

The Social Share Buttons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'form (containing share_url)' parameter in all versions up to, and including, 1.30 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that the 7-day review-nag timer has elapsed since the attacker's first wp-admin visit, as the nonce needed to reach the save-network handler is only rendered in the DOM once that timer has passed.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• plugins.trac.wordpress.org/browser/share-button/tags/1.30/admin/review_notice.php
• plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/blocks/network-block.php
• plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/class-network.php
• plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/class-social-networks…
• plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/class-social.php
• plugins.trac.wordpress.org/changeset
• www.wordfence.com/threat-intel/vulnerabilities/id/bc098f5d-3c59-4046-bce8-ac2586e6da19