CVE-2023-51675

Advanced Access Manager <= 6.9.18 - Authenticated (Author+) Open Redirect

2023-12-27 00:00
LVT-tholv2k

Strategic Overview

Status
Patched in 6.9.19
Affected Plugin
Advanced Access Manager – Access Governance for WordPress
Affected Version
<= 6.9.18
CVSS
4.3Medium
Weakness type
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
CVE
CVE-2023-51675
View all Advanced Access Manager – Access Governance for WordPress vulnerabilities

At a glance

CVE-2023-51675 is a medium-severity URL Redirection to Untrusted Site ('Open Redirect') vulnerability in the Advanced Access Manager WordPress plugin, affecting versions <= 6.9.18. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Author level or above. The issue is fixed in version 6.9.19; sites on affected versions should update now. Disclosed December 2023, reported by LVT-tholv2k.

Vulnerability Overview

The Advanced Access Manager – Restricted Content, Users & Roles, Enhanced Security and More plugin for WordPress is vulnerable to Open Redirect in all versions up to, and including, 6.9.18. This is due to insufficient validation on the redirect url supplied via params->redirect parameter. This makes it possible for authenticated attackers (author and higher) to redirect users to potentially malicious sites if they can successfully trick them into performing an action such as logging in.

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 interaction from a victim user.

CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

Reaching this weakness in Advanced Access Manager <= 6.9.18 takes an account at Author level or above. An open redirect is a page that takes a destination from the request and sends the browser there without checking that the destination belongs to the site.

A link that starts on a trusted domain finishes on an attacker's, which is what makes phishing and consent-screen abuse credible to the person clicking it. For Advanced Access Manager the fix is 6.9.19: builds <= 6.9.18 are affected, anything from 6.9.19 onward is not.

Remediation

Update to version 6.9.19, or a newer patched version

How does WordSec protect against this?

An attacker needs Author access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Advanced Access Manager 6.9.19 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-51675https://www.wordfence.com/threat-intel/vulnerabilities/id/1eb25ef3-28ea-4f8f-932a-e90ca1914e8dhttps://nvd.nist.gov/vuln/detail/CVE-2023-51675

Related records

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