CVE-2016-10902

WP Customer Reviews <= 3.0.8 - Cross-Site Request Forgery

2014-04-04 00:00
Anonymous

Strategic Overview

Status
Patched in 3.0.9
Affected Plugin
WP Customer Reviews
Affected Version
< 3.0.9
CVSS
8.8High
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2016-10902
View all WP Customer Reviews vulnerabilities

At a glance

CVE-2016-10902 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the WP Customer Reviews WordPress plugin, affecting versions < 3.0.9. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 3.0.9; sites on affected versions should update now. Disclosed April 2014.

Vulnerability Overview

The Customer Reviews Plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.0.8. This is due to missing nonce validation on the 'update_options' function. This makes it possible for unauthenticated attackers modify the plugin's settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

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 confidentiality, integrity, availability — full site compromise territory.

CWE-352: Cross-Site Request Forgery (CSRF)

WP Customer Reviews < 3.0.9 carries this weakness at update_options, 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 WP Customer Reviews the fix is 3.0.9: builds < 3.0.9 are affected, anything from 3.0.9 onward is not.

Remediation

Update to version 3.0.9, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WP Customer Reviews: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP Customer Reviews 3.0.9 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2016-10902https://www.wordfence.com/threat-intel/vulnerabilities/id/f70ec123-fff3-4f03-a424-37e0e579b765https://nvd.nist.gov/vuln/detail/CVE-2016-10902

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C