External risk intelligence

qcubed PHP Object Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2020-24914

The vulnerability exists in a web application framework (QCubed) within a profile-related script. Web frameworks are commonly deployed as internet-facing web applications, and this specific flaw is reachable via a crafted HTTP POST request to a standard web endpoint.

Deserialization

Qcubed

3.1.1 and earlier

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability exists in the qcubed web application framework that could allow an attacker to execute code remotely without authentication. This issue stems from how the framework handles user profile data, potentially leading to unauthorized system access and control. Confirming whether this framework is in use is the primary leadership concern.

  • Unauthenticated code execution via web requests.
  • Confirms risk in commonly used web frameworks.
  • Verify framework usage and exposure.

Attack Path

How an attacker could exploit the issue

An unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request to the `profile.php` script. This request targets the `strProfileData` parameter, which is improperly handled by deserializing untrusted data. Successful exploitation allows the attacker to execute arbitrary code on the affected system.

  • No authentication required.
  • Triggered via a crafted POST request.
  • Allows arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated attacker to execute arbitrary code on a system running qcubed when a specially crafted POST request is sent to the profile.php script. The attack leverages a PHP object injection flaw during data deserialization.

  • System data and service behavior at risk.
  • Via crafted POST request to profile.php.
  • Unauthenticated code execution could occur.

Operational Fix

Recommended remediation, mitigation, and detection steps

The PHP object injection vulnerability in qcubed impacts web application owners and infrastructure teams. The first practical step is to identify all instances of qcubed, confirm their reachability and criticality, and then assign ownership for remediation planning.

  • Identify qcubed application owners.
  • Verify external exposure and criticality.
  • Plan remediation and vendor coordination.

Supplementary metadata

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

Frequently asked questions

What is the QCubed framework?

QCubed is an open-source PHP web development framework designed to help developers build data-driven web applications more quickly. It functions as a structured environment for managing database interactions and user interfaces, often serving as the backend engine for custom web portals or business management tools where data handling is a core feature.

What is a PHP object injection vulnerability?

This is a weakness class identified as CWE-502, Deserialization of Untrusted Data. In the context of CVE-2020-24914, it means the application processes complex data structures sent by a user without verifying their safety. By providing a malicious object, an attacker can manipulate how the application behaves, which in this specific case leads to the unauthorized execution of code.

How is this vulnerability triggered?

An attacker triggers this flaw by sending a specifically crafted HTTP POST request to the 'profile.php' file on a server running the affected QCubed software. The vulnerability relies on the server processing the 'strProfileData' parameter; if the request does not target this specific parameter or the profile script, the deserialization process that enables this attack will not be initiated.

Is my system at risk?

If you are running QCubed version 3.1.1 or earlier, you should be concerned. Halo Surface Signal identifies this as a higher-risk issue because the flaw resides in a web framework, which is commonly deployed in internet-facing configurations. If your installation is accessible via the public internet, the attack path is directly reachable by unauthorized remote actors.

What should I do if I use QCubed?

Your first step is to perform an inventory to locate all applications utilizing the QCubed framework within your environment. Once identified, verify which instances are exposed to the network and determine their business criticality. Coordinate with your development or infrastructure teams to prioritize these assets for a security review and subsequent remediation planning.

References