CVE-2023-23730

Spectra – WordPress Gutenberg Blocks <= 2.3.1 - Captcha Bypass

2023-01-23 00:00

Strategic Overview

Status: Patched in 2.3.2
Affected Plugin: Spectra Legacy – Gutenberg Blocks
Affected Version: <= 2.3.1
CVSS: 5.3Medium
Weakness type: CWE-804 · Guessable CAPTCHA
CVE: CVE-2023-23730

View all Spectra Legacy – Gutenberg Blocks vulnerabilities

At a glance

CVE-2023-23730 is a medium-severity Guessable CAPTCHA vulnerability in the Spectra Legacy WordPress plugin, affecting versions <= 2.3.1. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.3.2; sites on affected versions should update now. Disclosed January 2023, reported by Dave Jong.

Vulnerability Overview

The Spectra – WordPress Gutenberg Blocks plugin for WordPress is vulnerable to CAPTCHA Bypass in versions up to, and including, 2.3.1. This makes it possible for unauthenticated attackers to bypass the Captcha Verification.

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, and no interaction from a victim user.

CWE-804: Guessable CAPTCHA

The product uses a CAPTCHA challenge, but the challenge can be guessed or automatically recognized by a non-human actor.

Remediation

Update to version 2.3.2, 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: Spectra Legacy 2.3.2 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-23730 https://www.wordfence.com/threat-intel/vulnerabilities/id/e7e33fbc-da1b-4109-8b29-37e1050a559b https://nvd.nist.gov/vuln/detail/CVE-2023-23730

Related records

Other vulnerabilities in Spectra Legacy – Gutenberg Blocks

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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