Rebinding Attack

A method of bypassing security by manipulating DNS responses to associate a victim’s browser with a malicious server.

Understanding:

A Rebinding Attack exploits browser security mechanisms to bypass same-origin policy (SOP) and gain unauthorized access to private networks. Attackers use DNS rebinding to trick browsers into connecting to internal systems.

Common Applications and Use Cases:

Bypassing Firewalls – Attackers access internal services through manipulated DNS entries.
Stealing Sensitive Data – Can expose private API endpoints, databases, and IoT devices.
Exploiting Web Applications – Targets applications that rely on client-side security controls.

Best Practices and Security Considerations:

Use DNS Pinning & Restrict Private IP Access – Prevents malicious domain resolution changes.
Enforce Web Application Firewall (WAF) Rules – Blocks unauthorized cross-origin requests.
Enable Network Segmentation – Reduces the risk of internal network exploitation.