CVE-2021-42362 Information

Description

The WordPress Popular Posts WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation found in the ~/src/Image.php file which makes it possible for attackers with contributor level access and above to upload malicious files that can be used to obtain remote code execution in versions up to and including 5.3.2.

CVSS Vector

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

Reference

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-42362 https://wpscan.com/vulnerability/bd4f157c-a3d7-4535-a587-0102ba4e3009 https://plugins.trac.wordpress.org/changeset/2542638/wordpress-popular-posts/trunk/src/Image.php https://blog.nintechnet.com/improper-input-validation-fixed-in-wordpress-popular-posts-plugin/ http://packetstormsecurity.com/files/165376/WordPress-Popular-Posts-5.3.2-Remote-Code-Execution.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8