SIGTRAN Attack Vectors
Common vulnerabilities and attack surfaces in SIGTRAN networks and protocols
SIGTRAN Attack Surface Overview
A visual representation of the attack surface in SIGTRAN networks
SCTP Association Flooding
Overwhelming SIGTRAN endpoints with SCTP association requests to cause denial of service
Techniques:
Basic Association Flooding: Sending a high volume of SCTP INIT chunks to exhaust server resources
SCTP INIT Flooding with Cookie Manipulation: Flooding with manipulated cookie parameters to increase processing overhead
Countermeasures:
- Implement SCTP association rate limiting
- Deploy IP-based access control lists
- Configure resource allocation limits for SCTP associations
- +2 more
M3UA Message Spoofing
Injecting fake M3UA messages to manipulate signaling routing or execute SS7 attacks
Techniques:
Routing Key Manipulation: Spoofing M3UA Registration Request (REG REQ) messages to alter routing tables
ASP State Manipulation: Sending fake ASP state management messages to disrupt service
+1 more techniques
Countermeasures:
- Implement M3UA message authentication
- Deploy SCTP authentication (RFC 4895)
- Filter M3UA management messages from untrusted sources
- +2 more
SIGTRAN Gateway Attacks
Targeting the boundary between SS7 and IP networks to compromise signaling integrity
Techniques:
Protocol Translation Exploitation: Exploiting flaws in the conversion between SS7 and SIGTRAN protocols
Gateway Overload: Overwhelming the Signaling Gateway with traffic to cause denial of service
+1 more techniques
Countermeasures:
- Implement robust input validation at protocol boundaries
- Deploy traffic rate limiting and load balancing
- Implement deep packet inspection for cross-domain traffic
- +2 more
SCTP Authentication Bypass
Circumventing SCTP authentication mechanisms to establish unauthorized associations
Techniques:
Authentication Parameter Manipulation: Manipulating SCTP AUTH chunks to bypass authentication
Shared Key Exploitation: Exploiting weak or leaked shared keys used for SCTP authentication
Countermeasures:
- Implement strong key management for SCTP authentication
- Use unique keys for each SCTP endpoint pair
- Regularly rotate authentication keys
- +2 more
SIGTRAN Attack Surface Diagram
Detailed diagram showing potential entry points for attacks in SIGTRAN networks
