Horizon Alert
Summary of the vulnerability and why it matters
OpenProject, a web-based project management tool, has a critical vulnerability that could allow logged-in users to gain unauthorized access to sensitive system information. This issue stems from a default, predictable secret key within its Docker image, which, when combined with a specific configuration, creates a security weakness. The main concern at this stage is confirming if this technology is in use within our environment and, if so, to what extent it is exposed.
- Predictable secret key allows unauthorized access.
- Matters due to web-based project management use.
- Confirm relevance and exposure; assess impact.
Attack Path
How an attacker could exploit the issue
An attacker with basic access to OpenProject could exploit this vulnerability by crafting a special cookie. This would allow them to trigger a weakness in how the application handles sensitive information, potentially leading to a complete compromise of the system.
- Attacker needs to be logged in.
- Triggered by a specially crafted cookie.
- Risks data compromise and system control.
Live Threat
Current exploitation, exposure, and threat context
A logged-in user could leverage a default master key and a deserialization vulnerability to affect service behavior and potentially compromise system or user data.
- System data and service behavior.
- Logged-in user can exploit default master key.
- Unauthorized access and data manipulation.
Operational Fix
Recommended remediation, mitigation, and detection steps
This critical vulnerability in OpenProject's default configuration requires immediate attention from teams managing web applications and their underlying infrastructure. The first step is to identify all instances of OpenProject, confirm their exposure and criticality, and then engage the accountable owners to plan a secure remediation.
- App owners and infrastructure teams.
- Confirm default secret key usage.
- Plan and execute configuration updates.
