Add Social Share Buttons for Whatsapp and Viber < 1.1 - Cross-Site Request Forgery
Strategic Overview
- Status
- Patched in 1.1
- Affected Plugin
- Add Social Share Buttons for Whatsapp and Viber
- Affected Version
< 1.1- CVSS
- 6.5Medium
- Weakness type
- CWE-352 · Cross-Site Request Forgery (CSRF)
- CVE
CVE-2018-11632
At a glance
CVE-2018-11632 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Add Social Share Buttons for Whatsapp and Viber WordPress plugin, affecting versions < 1.1. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 1.1; sites on affected versions should update now. Disclosed May 2018, reported by ThreatPress.
Vulnerability Overview
An issue was discovered in the MULTIDOTS Add Social Share Messenger Buttons Whatsapp and Viber plugin 1.0.8 for WordPress. If an admin user can be tricked into visiting a crafted URL created by an attacker (via spear phishing/social engineering), the attacker can change the plugin settings via wp-admin/admin-post.php CSRF. There's no nonce or capability check in the whatsapp_share_setting_add_update() function.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site. A successful exploit has high impact on integrity.
CWE-352: Cross-Site Request Forgery (CSRF)
Add Social Share Buttons for Whatsapp and Viber < 1.1 carries this weakness at whatsapp_share_setting_add_update(), and reaching it takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.
An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For Add Social Share Buttons for Whatsapp and Viber the fix is 1.1: builds < 1.1 are affected, anything from 1.1 onward is not.
Remediation
Update to version 1.1, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Add Social Share Buttons for Whatsapp and Viber: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Add Social Share Buttons for Whatsapp and Viber 1.1 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C