Instant Images – One Click Unsplash, Pixabay and Pexels Uploads <= 4.4.0 - Authenticated Stored Cross-Site Scripting

2021-05-17 00:00

R3N0

Strategic Overview

Status

Patched in 4.4.0.1

Affected PluginInstant Images – One-click Image Uploads from Unsplash, Openverse, Pixabay, Pexels, and Giphy

Affected Version<= 4.4.0

CVSS6.4Medium

CVECVE-2021-24334

View all Instant Images – One-click Image Uploads from Unsplash, Openverse, Pixabay, Pexels, and Giphy vulnerabilities

Vulnerability Overview

The Instant Images – One Click Unsplash Uploads WordPress plugin before 4.4.0.1 did not properly validate and sanitise its unsplash_download_w and unsplash_download_h parameter settings (/wp-admin/upload.php?page=instant-images), only validating them client side before saving them, leading to a Stored Cross-Site Scripting issue.

Technical Analysis

REMEDIATION: Update to version 4.4.0.1, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24334 https://www.wordfence.com/threat-intel/vulnerabilities/id/1b75da76-1a58-4f8e-9b4f-d2e40d09f9ea

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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