CVE-2022-0214

Popup | Custom Popup Builder <= 1.3 - Denial of Service

2022-01-17 00:00

Strategic Overview

Status: Patched in 1.3.1
Affected Plugin: Popup | Custom Popup Builder
Affected Version: < 1.3.1
CVSS: 7.5High
Weakness type: CWE-400 · Uncontrolled Resource Consumption
CVE: CVE-2022-0214

View all Popup | Custom Popup Builder vulnerabilities

At a glance

CVE-2022-0214 is a high-severity Uncontrolled Resource Consumption vulnerability in the Popup WordPress plugin, affecting versions < 1.3.1. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high availability impact). Exploitation requires no authentication. The issue is fixed in version 1.3.1; sites on affected versions should update now. Disclosed January 2022, reported by Felipe de Avila.

Vulnerability Overview

The Popup | Custom Popup Builder WordPress plugin before 1.3.1 autoload data from its popup on every pages, as such data can be sent by unauthenticated user, and is not validated in length, this could cause a denial of service on the blog

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-400: Uncontrolled Resource Consumption

Reaching this weakness in Popup < 1.3.1 takes a caller who can reach the endpoint. Uncontrolled resource consumption means a request can make the server do an amount of work it never bounds, because the size or repetition of the job is taken from the request rather than capped by the code.

A single caller can hold PHP workers, database connections or disk open long enough to slow the site for everyone, without needing any account or any other flaw. For Popup the fix is 1.3.1: builds < 1.3.1 are affected, anything from 1.3.1 onward is not.

Remediation

Update to version 1.3.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Popup: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Popup 1.3.1 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-0214 https://www.wordfence.com/threat-intel/vulnerabilities/id/9f73d5b3-8d7c-43d1-84e4-f8a3976eab8f https://nvd.nist.gov/vuln/detail/CVE-2022-0214

Related records

Other vulnerabilities in Popup | Custom Popup Builder

6.4CVE-2022-28612: Popup Missing Capabilities CheckCVE-2022-28612

CVSS Vector

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh

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