CVE-2023-51683

Easy PayPal Buy Now Button <= 1.8.1 - Cross-Site Request Forgery

2023-12-27 00:00

Strategic Overview

Status: Patched in 1.8.2
Affected Plugin: Easy PayPal & Stripe Buy Now Button
Affected Version: <= 1.8.1
CVSS: 4.3Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2023-51683

View all Easy PayPal & Stripe Buy Now Button vulnerabilities

At a glance

CVE-2023-51683 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Easy PayPal & Stripe Buy Now Button WordPress plugin, affecting versions <= 1.8.1. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.8.2; sites on affected versions should update now. Disclosed December 2023, reported by LVT-tholv2k.

Vulnerability Overview

The Easy PayPal Buy Now Button plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.8.1. This is due to missing or incorrect nonce validation on one of its functions. This makes it possible for unauthenticated attackers to invoke this function via a forged request granted they can trick a site administrator into performing an action such as clicking on a 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.

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in Easy PayPal & Stripe Buy Now Button <= 1.8.1 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For Easy PayPal & Stripe Buy Now Button the fix is 1.8.2: builds <= 1.8.1 are affected, anything from 1.8.2 onward is not.

Remediation

Update to version 1.8.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Easy PayPal & Stripe Buy Now Button: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Easy PayPal & Stripe Buy Now Button 1.8.2 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-51683 https://www.wordfence.com/threat-intel/vulnerabilities/id/8f6fd0bb-d37b-40b6-b84e-9b21aae891cc https://nvd.nist.gov/vuln/detail/CVE-2023-51683

Related records

Same weakness class

Other vulnerabilities in Easy PayPal & Stripe Buy Now Button

CVSS Vector

4.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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