CVE-2023-46082

Broken Link Checker | Finder <= 2.4.2 - Missing Authorization via moblc_auth_save_settings

2023-10-16 00:00

Strategic Overview

Status: Patched in 2.5.0
Affected Plugin: Broken Link Checker | Finder
Affected Version: <= 2.4.2
CVSS: 5.3Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2023-46082

View all Broken Link Checker | Finder vulnerabilities

At a glance

CVE-2023-46082 is a medium-severity Missing Authorization vulnerability in the Broken Link Checker WordPress plugin, affecting versions <= 2.4.2. 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 2.5.0; sites on affected versions should update now. Disclosed October 2023, reported by Abdi Pranata.

Vulnerability Overview

The Broken Link Checker | Finder plugin for WordPress is vulnerable to modification of data due to a missing capability check on the moblc_auth_save_settings function in versions up to, and including, 2.4.2. This makes it possible for unauthenticated attackers to dismiss admin notifications

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-862: Missing Authorization

Reaching this weakness in Broken Link Checker <= 2.4.2 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 Broken Link Checker the fix is 2.5.0: builds <= 2.4.2 are affected, anything from 2.5.0 onward is not.

Remediation

Update to version 2.5.0, 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: Broken Link Checker 2.5.0 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-46082 https://www.wordfence.com/threat-intel/vulnerabilities/id/e4383f41-bd08-4fab-9491-4cf9f7326300 https://nvd.nist.gov/vuln/detail/CVE-2023-46082

Related records

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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