CVE-2015-9443

WP Accurate Form Data <= 1.2 - Cross-Site Request Forgery to Cross-Site Scripting

2015-06-21 00:00
Kenneth Jepsen

Strategic Overview

Status
Unpatched
Affected Plugin
WP Accurate Form Data
Affected Version
<= 1.2
CVSS
8.8High
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2015-9443
View all WP Accurate Form Data vulnerabilities

At a glance

CVE-2015-9443 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the WP Accurate Form Data WordPress plugin, affecting versions <= 1.2. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed June 2015, reported by Kenneth Jepsen.

Vulnerability Overview

The accurate-form-data-real-time-form-validation plugin 1.2 for WordPress has CSRF with resultant XSS via wp-admin/options-general.php?page=Accu_Data_WP.

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)

Reaching this weakness in WP Accurate Form Data <= 1.2 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. No fixed build of this plugin is recorded for WP Accurate Form Data yet, so installs running <= 1.2 stay exposed until the vendor ships one.

Remediation

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

How does WordSec protect against this?

The attempt arrives as an ordinary request to WP Accurate Form Data: WordSec's web application firewall inspects request payloads before WordPress loads them. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.

  • Firewall
  • Alerts

External References

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