CVE-2024-12601

Calculated Fields Form <= 5.2.63 - Denial of Service

2024-12-16 00:00
Max Boll (_b0lli)

Strategic Overview

Status
Patched in 5.2.64
Affected Plugin
Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More
Affected Version
<= 5.2.63
CVSS
5.3Medium
Weakness type
CWE-400 · Uncontrolled Resource Consumption
CVE
CVE-2024-12601
View all Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More vulnerabilities

At a glance

CVE-2024-12601 is a medium-severity Uncontrolled Resource Consumption vulnerability in the Calculated Fields Form WordPress plugin, affecting versions <= 5.2.63. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 5.2.64; sites on affected versions should update now. Disclosed December 2024, reported by Max Boll (_b0lli).

Vulnerability Overview

The Calculated Fields Form plugin for WordPress is vulnerable to Denial of Service in all versions up to, and including, 5.2.63. This is due to unlimited height and width parameters for CAPTCHA images. This makes it possible for unauthenticated attackers to send multiple requests with large values, resulting in slowing server resources if the server does not mitigate Denial of Service attacks.

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 privileges on the target site, and no interaction from a victim user.

CWE-400: Uncontrolled Resource Consumption

Reaching this weakness in Calculated Fields Form <= 5.2.63 takes a caller who can reach the endpoint. Uncontrolled resource consumption means a request can make the server do an amount of work it never bounds, because the size or repetition of the job is taken from the request rather than capped by the code.

A single caller can hold PHP workers, database connections or disk open long enough to slow the site for everyone, without needing any account or any other flaw. For Calculated Fields Form the fix is 5.2.64: builds <= 5.2.63 are affected, anything from 5.2.64 onward is not.

Remediation

Update to version 5.2.64, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Calculated Fields Form: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Calculated Fields Form 5.2.64 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-12601https://www.wordfence.com/threat-intel/vulnerabilities/id/1eade2ed-9a75-4857-a2c5-a21e016e7029https://nvd.nist.gov/vuln/detail/CVE-2024-12601

Related records

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