CVE-2021-24570

Paypal Donation <= 1.3 - Cross-Site Request Forgery to Stored Cross-Site Scripting

2021-10-04 00:00

Strategic Overview

Status: Patched in 1.3.1
Affected Plugin: Accept Donations with PayPal & Stripe
Affected Version: <= 1.3
CVSS: 6.1Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2021-24570

View all Accept Donations with PayPal & Stripe vulnerabilities

At a glance

CVE-2021-24570 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Accept Donations with PayPal & Stripe WordPress plugin, affecting versions <= 1.3. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.3.1; sites on affected versions should update now. Disclosed October 2021, reported by dc11.

Vulnerability Overview

The Accept Donations with PayPal WordPress plugin before 1.3.1 offers a function to create donation buttons, which internally are posts. The process to create a new button is lacking a CSRF check. An attacker could use this to make an authenticated admin create a new button. Furthermore, one of the Button field is not escaped before being output in an attribute when editing a Button, leading to a Stored Cross-Site Scripting issue as well.

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 Accept Donations with PayPal & Stripe <= 1.3 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 Accept Donations with PayPal & Stripe the fix is 1.3.1: builds <= 1.3 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 Accept Donations with PayPal & Stripe: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Accept Donations with PayPal & Stripe 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-2021-24570 https://www.wordfence.com/threat-intel/vulnerabilities/id/d0ec4f27-2057-468e-bfcd-818c50952cac https://nvd.nist.gov/vuln/detail/CVE-2021-24570

Related records

Same weakness class

Other vulnerabilities in Accept Donations with PayPal & Stripe

CVSS Vector

6.1

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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