CVE-2022-0479

Popup Builder <= 4.1.0 - SQL Injection

2022-03-07 00:00

Strategic Overview

Status: Patched in 4.1.1
Affected Plugin: Popup Builder – Create highly converting, mobile friendly marketing popups.
Affected Version: < 4.1.1
CVSS: 9.8Critical
Weakness type: CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE: CVE-2022-0479

View all Popup Builder – Create highly converting, mobile friendly marketing popups. vulnerabilities

At a glance

CVE-2022-0479 is a critical-severity Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in the Popup Builder WordPress plugin, affecting versions < 4.1.1. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 4.1.1; sites on affected versions should update now. Disclosed March 2022, reported by Krzysztof Zając.

Vulnerability Overview

The Popup Builder WordPress plugin before 4.1.1 does not sanitise and escape the sgpb-subscription-popup-id parameter before using it in a SQL statement in the All Subscribers admin dashboard, leading to a SQL injection, which could also be used to perform Reflected Cross-Site Scripting attack against a logged in admin opening a malicious link

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 confidentiality, integrity, availability — full site compromise territory.

CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Reaching this weakness in Popup Builder < 4.1.1 takes a caller who can reach the endpoint. SQL injection happens when request data is concatenated into a query instead of being bound as a parameter, letting an attacker change the structure of the statement rather than just its values.

A working injection can read any table the database user can see, which on a WordPress install means user records, password hashes and session or API secrets stored in options. For Popup Builder the fix is 4.1.1: builds < 4.1.1 are affected, anything from 4.1.1 onward is not.

Remediation

Update to version 4.1.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Popup Builder: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Popup Builder 4.1.1 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-0479 https://www.wordfence.com/threat-intel/vulnerabilities/id/a9b7a73c-6fba-4b5d-9f82-c3710cc8555d https://nvd.nist.gov/vuln/detail/CVE-2022-0479

Related records

Same weakness class

Other vulnerabilities in Popup Builder – Create highly converting, mobile friendly marketing popups.

CVSS Vector

9.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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