CVE-2024-3027

Smart Slider 3 <= 3.5.1.22 - Missing Authorization to Limited File Upload

2024-04-12 00:00

Strategic Overview

Status: Patched in 3.5.1.23
Affected Plugin: Smart Slider 3
Affected Version: <= 3.5.1.22
CVSS: 6.4Medium
Weakness type: CWE-285 · Improper Authorization
CVE: CVE-2024-3027

At a glance

CVE-2024-3027 is a medium-severity Improper Authorization vulnerability in the Smart Slider 3 WordPress plugin, affecting versions <= 3.5.1.22. It carries a CVSS score of 6.4 (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 3.5.1.23; sites on affected versions should update now. Disclosed April 2024, reported by Christiaan Swiers (YouGina).

Vulnerability Overview

The Smart Slider 3 plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the upload function in all versions up to, and including, 3.5.1.22. This makes it possible for authenticated attackers, with contributor-level access and above, to upload files, including SVG files, which can be used to conduct stored cross-site scripting attacks.

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 Smart Slider 3 <= 3.5.1.22 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 Smart Slider 3 the fix is 3.5.1.23: builds <= 3.5.1.22 are affected, anything from 3.5.1.23 onward is not.

Remediation

Update to version 3.5.1.23, 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: Smart Slider 3 3.5.1.23 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-3027 https://www.wordfence.com/threat-intel/vulnerabilities/id/915f464f-449d-4ad2-9f43-6ce5d93ccb05 https://nvd.nist.gov/vuln/detail/CVE-2024-3027

Related records

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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