CVE-2016-10959

Estatik <= 2.3.0 - Cross-Site Request Forgery to Arbitrary File Upload

2016-08-01 00:00
Anonymous

Strategic Overview

Status
Patched in 2.3.1
Affected Plugin
Estatik Real Estate Plugin
Affected Version
<= 2.3.0
CVSS
8.8High
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2016-10959
View all Estatik Real Estate Plugin vulnerabilities

At a glance

CVE-2016-10959 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the Estatik Real Estate Plugin WordPress plugin, affecting versions <= 2.3.0. 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 2.3.1; sites on affected versions should update now. Disclosed August 2016.

Vulnerability Overview

The estatik plugin before 2.3.1 for WordPress has authenticated arbitrary file upload (exploitable with CSRF) via es_media_images[] to wp-admin/admin-ajax.php.

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 Estatik Real Estate Plugin <= 2.3.0 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 Estatik Real Estate Plugin the fix is 2.3.1: builds <= 2.3.0 are affected, anything from 2.3.1 onward is not.

Remediation

Update to version 2.3.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Estatik Real Estate Plugin: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Estatik Real Estate Plugin 2.3.1 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2016-10959https://www.wordfence.com/threat-intel/vulnerabilities/id/54b3eaf4-5f45-4b94-8a7b-03da76d6ea83https://nvd.nist.gov/vuln/detail/CVE-2016-10959

Related records

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