The WP User Switch plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 1.0.2. This is due to incorrect authentication checking in the wpus_allow_user_to_admin_bar_menu function with the wpus_who_switch cookie value. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to log in as any existing user on the site, such as an administrator, if they have access to the username.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Wp_user_switch | Wp_user_switch_project | * | 1.0.2 (including) |
References
- https://lana.codes/lanavdb/0cfdc5fa-d219-46bb-b8cc-693ac28a9e92/
- https://plugins.trac.wordpress.org/browser/wp-user-switch/trunk/inc/functions.php?rev=2237142#L33
- https://plugins.trac.wordpress.org/changeset/2921182/wp-user-switch/trunk/inc/functions.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e89d912d-fa7a-4fb1-8872-95fa861c21ca?source=cve
- https://lana.codes/lanavdb/0cfdc5fa-d219-46bb-b8cc-693ac28a9e92/
- https://plugins.trac.wordpress.org/browser/wp-user-switch/trunk/inc/functions.php?rev=2237142#L33
- https://plugins.trac.wordpress.org/changeset/2921182/wp-user-switch/trunk/inc/functions.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e89d912d-fa7a-4fb1-8872-95fa861c21ca?source=cve