CVE-2023-51546

WooCommerce PDF Invoices <= 4.2.1 - Authenticated(Shop Manager+) Arbitrary Options Update via JSON Import

2023-12-27 00:00

Strategic Overview

Status: Patched in 4.3.0
Affected Plugin: WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels
Affected Version: <= 4.2.1
CVSS: 7.2High
Weakness type: CWE-20 · Improper Input Validation
CVE: CVE-2023-51546

View all WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels vulnerabilities

At a glance

CVE-2023-51546 is a high-severity Improper Input Validation vulnerability in the WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels WordPress plugin, affecting versions <= 4.2.1. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Shop Manager level or above. The issue is fixed in version 4.3.0; sites on affected versions should update now. Disclosed December 2023, reported by Rafie Muhammad.

Vulnerability Overview

The WooCommerce PDF Invoices, Packing Slips, Delivery Notes and Shipping Labels plugin for WordPress is vulnerable to arbitrary options updates via the JSON import functionality in all versions up to, and including, 4.2.1. This makes it possible for authenticated attackers, with Shop Manager access and above, to update arbitrary site options.

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-20: Improper Input Validation

Reaching this weakness in WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels <= 4.2.1 takes an account at Shop Manager level or above. Improper input validation means the application accepts input without confirming it has the form, type or range the code downstream assumes.

The concrete impact depends on where the unvalidated value lands, which is why records in this class range from cosmetic bugs to full compromise. For WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels the fix is 4.3.0: builds <= 4.2.1 are affected, anything from 4.3.0 onward is not.

Remediation

Update to version 4.3.0, or a newer patched version

How does WordSec protect against this?

An attacker needs Shop Manager access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels 4.3.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-51546 https://www.wordfence.com/threat-intel/vulnerabilities/id/7927edf2-b092-4b56-83aa-038f99ea658e https://nvd.nist.gov/vuln/detail/CVE-2023-51546

Related records

Other vulnerabilities in WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels

CVSS Vector

7.2

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

Base

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

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