CVE-2023-23787

Premmerce Redirect Manager <= 1.0.10 - Cross-Site Request Forgery via deleteRedirect()

2023-03-30 00:00
Rio Darmawan

Strategic Overview

Status
Patched in 1.0.11
Affected Plugin
Premmerce Redirect Manager
Affected Version
<= 1.0.10
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2023-23787
View all Premmerce Redirect Manager vulnerabilities

At a glance

CVE-2023-23787 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Premmerce Redirect Manager WordPress plugin, affecting versions <= 1.0.10. 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 1.0.11; sites on affected versions should update now. Disclosed March 2023, reported by Rio Darmawan.

Vulnerability Overview

The Premmerce Redirect Manager plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.0.10. This is due to missing or incorrect nonce validation on the deleteRedirect() function called via an admin_post hook. This makes it possible for unauthenticated attackers to delete redirects 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)

Premmerce Redirect Manager <= 1.0.10 carries this weakness at deleteRedirect(), 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 Premmerce Redirect Manager the fix is 1.0.11: builds <= 1.0.10 are affected, anything from 1.0.11 onward is not.

Remediation

Update to version 1.0.11, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Premmerce Redirect Manager: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Premmerce Redirect Manager 1.0.11 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-23787https://www.wordfence.com/threat-intel/vulnerabilities/id/6d84fa60-f780-41e2-96dc-57057c646e01https://nvd.nist.gov/vuln/detail/CVE-2023-23787

Related records

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