WP Custom Admin Interface <= 7.32 - Cross-Site Request Forgery to Transients Deletion

2023-09-29 00:00
Anonymous

Strategic Overview

Status
Patched in 7.33
Affected Plugin
WP Custom Admin Interface
Affected Version
< 7.33
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE pending
View all WP Custom Admin Interface vulnerabilities

At a glance

This record tracks a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the WP Custom Admin Interface WordPress plugin, affecting versions < 7.33. 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 7.33; sites on affected versions should update now. Disclosed September 2023.

Vulnerability Overview

The WP Custom Admin Interface plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 7.32. This is due to missing or incorrect nonce validation on the wp_custom_admin_interface_delete_transients function. This makes it possible for unauthenticated attackers to delete plugin transients 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 WP Custom Admin Interface < 7.33 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 WP Custom Admin Interface the fix is 7.33: builds < 7.33 are affected, anything from 7.33 onward is not.

Remediation

Update to version 7.33, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WP Custom Admin Interface: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP Custom Admin Interface 7.33 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/a5bc6097-d6ed-4598-b3c8-9159d5ce04ee

Related records

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