CVE-2024-1043

AMP for WP <= 1.0.93.1 - Authenticated(Contributor+) Arbitrary Post Deletion via amppb_remove_saved_layout_data

2024-02-06 00:00
Sean Murphy

Strategic Overview

Status
Patched in 1.0.93.2
Affected Plugin
AMP for WP – Accelerated Mobile Pages
Affected Version
<= 1.0.93.1
CVSS
6.5Medium
Weakness type
CWE-285 · Improper Authorization
CVE
CVE-2024-1043
View all AMP for WP – Accelerated Mobile Pages vulnerabilities

At a glance

CVE-2024-1043 is a medium-severity Improper Authorization vulnerability in the AMP for WP WordPress plugin, affecting versions <= 1.0.93.1. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high availability impact). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 1.0.93.2; sites on affected versions should update now. Disclosed February 2024, reported by Sean Murphy.

Vulnerability Overview

The AMP for WP – Accelerated Mobile Pages plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check on the 'amppb_remove_saved_layout_data' function in all versions up to, and including, 1.0.93.1. This makes it possible for authenticated attackers, with contributor access and above, to delete arbitrary posts on the site.

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. A successful exploit has high impact on availability.

CWE-285: Improper Authorization

AMP for WP <= 1.0.93.1 carries this weakness at amppb_remove_saved_layout_data, and reaching it takes an account at Contributor level or above. Improper authorization means a permission check exists but does not cover the case being exercised, so a caller who is allowed to do one thing is allowed to do a neighbouring thing as well.

A lower-privileged account performs an action reserved for a higher one, which on a multi-author or membership site means an ordinary user reaching administrative behaviour. For AMP for WP the fix is 1.0.93.2: builds <= 1.0.93.1 are affected, anything from 1.0.93.2 onward is not.

Remediation

Update to version 1.0.93.2, 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: AMP for WP 1.0.93.2 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-1043https://www.wordfence.com/threat-intel/vulnerabilities/id/ffb70e82-355b-48f3-92d0-19659ed2550ehttps://nvd.nist.gov/vuln/detail/CVE-2024-1043

Related records

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