CVE-2023-39917

Photo Gallery by Ays <= 5.2.6 - Cross-Site Request Forgery

2023-08-07 00:00
Skalucy

Strategic Overview

Status
Patched in 5.2.7
Affected Plugin
Photo Gallery by Ays – Responsive Image Gallery
Affected Version
<= 5.2.6
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2023-39917
View all Photo Gallery by Ays – Responsive Image Gallery vulnerabilities

At a glance

CVE-2023-39917 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Photo Gallery by Ays WordPress plugin, affecting versions <= 5.2.6. 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 5.2.7; sites on affected versions should update now. Disclosed August 2023, reported by Skalucy.

Vulnerability Overview

The Photo Gallery by Ays plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 5.2.6. This is due to missing nonce validation in the /admin/partials/gallery-photo-gallery-admin-display.php file. This makes it possible for unauthenticated attackers to duplicate galleries 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 Photo Gallery by Ays <= 5.2.6 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 Photo Gallery by Ays the fix is 5.2.7: builds <= 5.2.6 are affected, anything from 5.2.7 onward is not.

Remediation

Update to version 5.2.7, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Photo Gallery by Ays: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Photo Gallery by Ays 5.2.7 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-39917https://www.wordfence.com/threat-intel/vulnerabilities/id/21f710ee-5040-4916-9fde-efc6d3b90943https://nvd.nist.gov/vuln/detail/CVE-2023-39917

Related records

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