Contempo Real Estate Custom Posts <= 3.2.6 - Unauthorized File Upload

2022-08-05 00:00
Anonymous

Strategic Overview

Status
Patched in 3.2.7
Affected Version
<= 3.2.6
CVSS
8.8High
Weakness type
CWE-862 · Missing Authorization
CVE
CVE pending
View all Contempo Real Estate Custom Posts vulnerabilities

At a glance

This record tracks a high-severity Missing Authorization vulnerability in the Contempo Real Estate Custom Posts WordPress plugin, affecting versions <= 3.2.6. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). The issue is fixed in version 3.2.7; sites on affected versions should update now. Disclosed August 2022.

Vulnerability Overview

The Contempo Real Estate Custom Posts plugin for WordPress is vulnerable to unauthorized file uploads due to a missing capability check on the ct_front_img_upload() function called via an AJAX action in versions up to, and including 3.2.6. This makes it possible for authenticated attackers with subscriber level permissions and above to upload arbitrary files to the server.

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 interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-862: Missing Authorization

Contempo Real Estate Custom Posts <= 3.2.6 carries this weakness at ct_front_img_upload(), and reaching it takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Contempo Real Estate Custom Posts the fix is 3.2.7: builds <= 3.2.6 are affected, anything from 3.2.7 onward is not.

Remediation

Update to version 3.2.7, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Contempo Real Estate Custom Posts 3.2.7 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

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