CVE-2021-4334

Fancy Product Designer <= 4.6.9 - Insufficient Authorization to Arbitrary Options Update via fpd_update_options

2023-04-05 00:00
Ram

Strategic Overview

Status
Patched in 4.7.0
Affected Plugin
Fancy Product Designer
Affected Version
<= 4.6.9
CVSS
8.8High
Weakness type
CWE-285 · Improper Authorization
CVE
CVE-2021-4334
View all Fancy Product Designer vulnerabilities

At a glance

CVE-2021-4334 is a high-severity Improper Authorization vulnerability in the Fancy Product Designer WordPress plugin, affecting versions <= 4.6.9. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). The issue is fixed in version 4.7.0; sites on affected versions should update now. Disclosed April 2023, reported by Ram.

Vulnerability Overview

The Fancy Product Designer plugin for WordPress is vulnerable to unauthorized modification of site options due to a missing capability check on the fpd_update_options function in versions up to, and including, 4.6.9. This makes it possible for authenticated attackers with subscriber-level permissions to modify site options, including setting the default role to administrator which can allow privilege escalation.

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 confidentiality, integrity, availability — full site compromise territory.

CWE-285: Improper Authorization

Reaching this weakness in Fancy Product Designer <= 4.6.9 takes a caller who can reach the endpoint. 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 Fancy Product Designer the fix is 4.7.0: builds <= 4.6.9 are affected, anything from 4.7.0 onward is not.

Remediation

Update to version 4.7.0, 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: Fancy Product Designer 4.7.0 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-4334https://www.wordfence.com/threat-intel/vulnerabilities/id/ea097cb7-85f4-4b6d-9f29-bc2636993f21https://nvd.nist.gov/vuln/detail/CVE-2021-4334

Related records

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