Nested Pages <= 3.0.7 - Missing Authorization

2019-03-26 00:00
Bart Dabek

Strategic Overview

Status
Patched in 3.0.8
Affected Plugin
Nested Pages
Affected Version
<= 3.0.7
CVSS
6.4Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE pending
View all Nested Pages vulnerabilities

At a glance

This record tracks a medium-severity Missing Authorization vulnerability in the Nested Pages WordPress plugin, affecting versions <= 3.0.7. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 3.0.8; sites on affected versions should update now. Disclosed March 2019, reported by Bart Dabek.

Vulnerability Overview

The Nested Pages plugin for WordPress is vulnerable to authorization bypass due to a missing capability check in versions up to, and including, 3.0.7. This makes it possible for authenticated attackers to edit other contributors' posts along with modifying the slugs and titles.

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-862: Missing Authorization

Reaching this weakness in Nested Pages <= 3.0.7 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Nested Pages the fix is 3.0.8: builds <= 3.0.7 are affected, anything from 3.0.8 onward is not.

Remediation

Update to version 3.0.8, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Nested Pages 3.0.8 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/1a76571a-f820-4902-afa9-287b59a11d14

Related records

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