CVE-2021-24739

Logo Carousel <= 3.4.1 - Unauthorised Private Post Access

2021-11-22 00:00

Strategic Overview

Status: Patched in 3.4.2
Affected Plugin: Logo Carousel – Responsive Logo Slider, Logo Showcase, and Clients Logo Gallery
Affected Version: <= 3.4.1
CVSS: 4.3Medium
Weakness type: CWE-285 · Improper Authorization
CVE: CVE-2021-24739

View all Logo Carousel – Responsive Logo Slider, Logo Showcase, and Clients Logo Gallery vulnerabilities

At a glance

CVE-2021-24739 is a medium-severity Improper Authorization vulnerability in the Logo Carousel WordPress plugin, affecting versions <= 3.4.1. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). The issue is fixed in version 3.4.2; sites on affected versions should update now. Disclosed November 2021, reported by apple502j.

Vulnerability Overview

The Logo Carousel WordPress plugin before 3.4.2 allows users with a role as low as Contributor to duplicate and view arbitrary private posts made by other users via the Carousel Duplication feature

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-285: Improper Authorization

Reaching this weakness in Logo Carousel <= 3.4.1 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 Logo Carousel the fix is 3.4.2: builds <= 3.4.1 are affected, anything from 3.4.2 onward is not.

Remediation

Update to version 3.4.2, 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: Logo Carousel 3.4.2 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-24739 https://www.wordfence.com/threat-intel/vulnerabilities/id/329a7910-fc9e-4786-9f0e-84eeb6e48bf4 https://nvd.nist.gov/vuln/detail/CVE-2021-24739

Related records

Other vulnerabilities in Logo Carousel – Responsive Logo Slider, Logo Showcase, and Clients Logo Gallery

5.4CVE-2021-24738: Logo Carousel <= 3.4.1 Contributor+ Stored XSSCVE-2021-24738

CVSS Vector

4.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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