Horizon Alert
Summary of the vulnerability and why it matters
A vulnerability in Apache Tomcat, a widely used web server, could allow unauthorized access to applications. This is because of an improper handling of access control rules for web paths, potentially bypassing security checks. The main concern is confirming relevance and exposure to your deployed applications.
- Improper access rules can bypass security.
- Widely used, internet-facing web server.
- Confirm if your applications are affected.
Attack Path
How an attacker could exploit the issue
An attacker could exploit this vulnerability by sending specially crafted requests to a vulnerable Apache Tomcat server. If the server's security configuration improperly orders access control rules, the attacker might be able to bypass restrictions intended to protect specific application paths, potentially gaining unauthorized access to sensitive resources or functionalities.
- No special access required.
- Requests target improperly ordered security constraints.
- Bypasses security restrictions.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could allow an unauthenticated attacker to bypass security constraints in Apache Tomcat. When improperly configured with path-based security constraints, a more general constraint for a longer path might be evaluated before a specific constraint for a shorter sub-path, potentially exposing sensitive resources or application functionality.
- Application resources and functionality.
- An attacker could access resources they are not authorized for.
- Unauthorized access to application data or features.
Operational Fix
Recommended remediation, mitigation, and detection steps
This Improper Access Control vulnerability in Apache Tomcat, allowing security constraint bypass, is most likely to be managed by infrastructure or platform teams responsible for the Tomcat deployment. The first practical step is to identify all instances of affected Tomcat versions, confirm their external reachability and business criticality, and then assign ownership for remediation planning.
- Infrastructure and Platform teams own the fix.
- Verify external reachability and business criticality.
- Plan and coordinate remediation during maintenance.
