Description

The 24liveblog - live blog tool plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the update_lb24_token() AJAX function in versions up to, and including, 2.2. The handler only verifies the 'lb24' nonce (which is generated and localized to any user with block editor access via lb24_block_enqueue_scripts()) and does not verify the user's capabilities or that the supplied user_id belongs to the current user. This makes it possible for authenticated attackers, with author-level access and above, to overwrite the lb24_token, lb24_uid, lb24_refresh_token, and lb24_uname user meta values of any user (including administrators) as well as the corresponding site-wide options, effectively hijacking the plugin's integration with the 24liveblog service.

Weaknesses 1

References 6

• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/24liveblog/trunk/plugin.php#L100
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/24liveblog/trunk/plugin.php#L104
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/24liveblog/trunk/plugin.php#L93
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/24liveblog/trunk/plugin.php#L94
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/24liveblog/trunk/src/init.php#L127
• wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/a7f22854-049a-4b4f-a448-13c416e0a6b7?source=cve

Remediation