CVE-2020-36712

Kali Forms <= 2.1.1 - Unauthenticated Arbitrary Post Deletion

2020-08-21 00:00
Jerome Bruandet

Strategic Overview

Status
Patched in 2.1.2
Affected Plugin
Kali Forms — Contact Form & Drag-and-Drop Builder
Affected Version
< 2.1.2
CVSS
8.6High
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2020-36712
View all Kali Forms — Contact Form & Drag-and-Drop Builder vulnerabilities

At a glance

CVE-2020-36712 is a high-severity Missing Authorization vulnerability in the Kali Forms WordPress plugin, affecting versions < 2.1.2. It carries a CVSS score of 8.6 (reachable over the network; low attack complexity; high availability impact). Exploitation requires no authentication. The issue is fixed in version 2.1.2; sites on affected versions should update now. Disclosed August 2020, reported by Jerome Bruandet.

Vulnerability Overview

The Kali Forms plugin for WordPress is vulnerable to Unauthenticated Arbitrary Post Deletion in versions up to, and including, 2.1.1. This is due to the kaliforms_form_delete_uploaded_file function lacking any privilege or user protections. This makes it possible for unauthenticated attackers to delete any site post or page with the id parameter.

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, and no interaction from a victim user. A successful exploit has high impact on availability.

CWE-862: Missing Authorization

Reaching this weakness in Kali Forms < 2.1.2 takes no account at all. 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 Kali Forms the fix is 2.1.2: builds < 2.1.2 are affected, anything from 2.1.2 onward is not.

Remediation

Update to version 2.1.2, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Kali Forms 2.1.2 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-36712https://www.wordfence.com/threat-intel/vulnerabilities/id/92644676-add4-415c-9a1a-c6616108688dhttps://nvd.nist.gov/vuln/detail/CVE-2020-36712

Related records

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