CVE-2023-2353

CHP Ads Block Detector <= 3.9.4 - Missing Authorization to Plugin Settings Update

2023-06-15 00:00

Strategic Overview

Status: Patched in 3.9.8
Affected Plugin: CHP Ads Block Detector
Affected Version: <= 3.9.4
CVSS: 4.3Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2023-2353

View all CHP Ads Block Detector vulnerabilities

At a glance

CVE-2023-2353 is a medium-severity Missing Authorization vulnerability in the CHP Ads Block Detector WordPress plugin, affecting versions <= 3.9.4. It carries a CVSS score of 4.3 (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 3.9.8; sites on affected versions should update now. Disclosed June 2023, reported by Marco Wotschka.

Vulnerability Overview

The CHP Ads Block Detector plugin for WordPress is vulnerable to unauthorized plugin settings update and reset due to a missing capability check on the chp_abd_action function in versions up to, and including, 3.9.4. This makes it possible for subscriber-level attackers to change or reset plugin settings. CVE-2023-36509 appears to be a duplicate of this issue.

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 CHP Ads Block Detector <= 3.9.4 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 CHP Ads Block Detector the fix is 3.9.8: builds <= 3.9.4 are affected, anything from 3.9.8 onward is not.

Remediation

Update to version 3.9.8, 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: CHP Ads Block Detector 3.9.8 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-2353 https://www.wordfence.com/threat-intel/vulnerabilities/id/4eca64d7-6e33-4b8e-af37-a3e8bbf2b76f https://nvd.nist.gov/vuln/detail/CVE-2023-2353

Related records

Other vulnerabilities in CHP Ads Block Detector

CVSS Vector

4.3

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

Base

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

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