CVE-2021-4415

Sunshine Photo Cart <= 2.8.28 - Cross-Site Request Forgery Bypass

2021-06-21 00:00
Jerome Bruandet

Strategic Overview

Status
Patched in 2.8.29
Affected Plugin
Sunshine Photo Cart – Client Photo Gallery & Photo Proofing for Photographers
Affected Version
<= 2.8.28
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2021-4415
View all Sunshine Photo Cart – Client Photo Gallery & Photo Proofing for Photographers vulnerabilities

At a glance

CVE-2021-4415 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Sunshine Photo Cart WordPress plugin, affecting versions <= 2.8.28. 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 2.8.29; sites on affected versions should update now. Disclosed June 2021, reported by Jerome Bruandet.

Vulnerability Overview

The Sunshine Photo Cart plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.8.28 This is due to missing or incorrect nonce validation on the sunshine_products_quicksave_post() function. This makes it possible for unauthenticated attackers to save custom post data 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)

Sunshine Photo Cart <= 2.8.28 carries this weakness at sunshine_products_quicksave_post(), and reaching it 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 Sunshine Photo Cart the fix is 2.8.29: builds <= 2.8.28 are affected, anything from 2.8.29 onward is not.

Remediation

Update to version 2.8.29, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Sunshine Photo Cart: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Sunshine Photo Cart 2.8.29 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-4415https://www.wordfence.com/threat-intel/vulnerabilities/id/c043510b-6aeb-4e91-80f0-a62970c01b1dhttps://nvd.nist.gov/vuln/detail/CVE-2021-4415

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C