WordPress Popular Posts: Dangerous file upload

WordPress Popular Posts is affected by dangerous file upload. Exploitation requires at least contributor-level access. Successful exploitation can place attacker-controlled executable content on the server and may lead to full site compromise.

CVE / CNA score 8.8 CVSS 3.1 · security@wordfence.com

NVD score 6.5 CVSS 2.0 · nvd@nist.gov

Component: WordPress Popular Posts
Plugin slug: wordpress-popular-posts
Affected: See vendor advisory
Safe version: See mitigation notes
Published: Nov 17, 2021
Weakness: CWE-434 — Unrestricted Upload of File with Dangerous Type

This CVE was published Nov 17, 2021 and is one of 6 known issues for this plugin.

What to do

Update, patch or deactivate.

Update WordPress Popular Posts to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical 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.

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

NVD vector: AV:N/AC:L/Au:S/C:P/I:P/A:P

References

Update, patch or deactivate.

Technical description

Primary and upstream sources