PT-2021-17989 · Fork Cms · Fork Cms

Published 2021-07-07 · Updated 2021-09-08 · CVE-2021-28931

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Fork CMS version 5.9.2

Description: The issue allows attackers to create or replace arbitrary files in the /themes directory via a crafted zip file uploaded to the Themes panel.

Recommendations: For Fork CMS version 5.9.2, consider restricting access to the Themes panel to minimize the risk of exploitation until a patch is available. Avoid using the zip file upload feature in the Themes panel until the issue is resolved.

Fix

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2021-28931

GHSA-748F-WV76-X9HG

Affected Products

Fork Cms

References · 7

• https://osv.dev/vulnerability/GHSA-748f-wv76-x9hg · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28931 · Security Note
• https://osv.dev/vulnerability/CVE-2021-28931 · Vendor Advisory
• https://github.com/forkcms/forkcms/releases/tag/5.9.2 · Note
• https://github.com/forkcms/forkcms/pull/3351 · Note
• https://t.me/cvenotify/17462 · Telegram Post
• https://github.com/bousalman/ForkCMS-arbitrary-upload/blob/main/README.md · Note