CVE-2021-24689

Contact Forms - Drag & Drop Contact Form Builder <= 1.0.5 - Authenticated (Admin+) Arbitrary System File Read

2021-09-27 00:00
Davide Taraschi

Strategic Overview

Status
Unpatched
Affected Version
<= 1.0.5
CVSS
4.9Medium
Weakness type
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE
CVE-2021-24689
View all Contact Forms – Drag & Drop Contact Form Builder vulnerabilities

At a glance

CVE-2021-24689 is a medium-severity Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the Contact Forms WordPress plugin, affecting versions <= 1.0.5. It carries a CVSS score of 4.9 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires an authenticated account at Admin level or above. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed September 2021, reported by Davide Taraschi.

Vulnerability Overview

The Contact Forms - Drag & Drop Contact Form Builder WordPress plugin through 1.0.5 allows high privilege users to download arbitrary files from the web server via a path traversal attack

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality.

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Reaching this weakness in Contact Forms <= 1.0.5 takes an account at Admin level or above. Path traversal happens when user-controlled text is used to build a filesystem path without being constrained to an intended directory, so sequences like ../ walk the resolved path somewhere else.

Depending on the operation, it means reading files outside the intended folder — wp-config.php being the usual target — or writing to and deleting paths the web server can touch. No fixed build of this plugin is recorded for Contact Forms yet, so installs running <= 1.0.5 stay exposed until the vendor ships one.

Remediation

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

How does WordSec protect against this?

An attacker needs Admin access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.

  • Firewall
  • Alerts

External References

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C