Vulnerability CVE-2021-42362
Published: 2021-11-17

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.

Type:

CWE-434

 (Unrestricted Upload of File with Dangerous Type)

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.5/10
6.4/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Wordpress popular posts project -> Wordpress popular posts 

 References:
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/
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