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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
maxfoundry Social Share Buttons
Default version status: unaffected
0 to ≤ 1.30affected
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/bc098f5d-3c59-4046-bce8-ac2586e6da19?source=cve ↗
- https://plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/class-social-networks.php#L370 ↗
- https://plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/blocks/network-block.php#L47 ↗
- https://plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/class-network.php#L275 ↗
- https://plugins.trac.wordpress.org/browser/share-button/tags/1.30/admin/review_notice.php#L26 ↗
- https://plugins.trac.wordpress.org/browser/share-button/tags/1.30/classes/class-social.php#L60 ↗
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3735252%40share-button&new=3735252%40share-button ↗