WordPress security changelog
CRITICAL CVE-2021-24284 Modified

Kaswara Modern VC Addons: Dangerous file upload

Kaswara Modern VC Addons is affected by dangerous file upload. The vulnerable path is reachable without authentication. Successful exploitation can place attacker-controlled executable content on the server and may lead to full site compromise.

CVE / CNA score 9.8 CVSS · contact@wpscan.com
NVD score 9.8 CVSS 3.1 · nvd@nist.gov
Component
Kaswara Modern VC Addons
Plugin slug
kaswara
Affected
See vendor advisory
Safe version
See mitigation notes
Published
May 14, 2021
Weakness
CWE-434 — Unrestricted Upload of File with Dangerous Type

This CVE was published May 14, 2021 and is one of 2 known issues for this plugin.

Update, patch or deactivate.

Update Kaswara Modern VC Addons 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.

Technical description

The Kaswara Modern VC Addons WordPress plugin through 3.0.1 allows unauthenticated arbitrary file upload via the 'uploadFontIcon' AJAX action. The supplied zipfile being unzipped in the wp-content/uploads/kaswara/fonts_icon directory with no checks for malicious files such as PHP.

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

Primary and upstream sources