3.2. Replay of Signaling Messages ..............................11 3.3. Injecting or Modifying Messages ...........................11 3.4. Insecure Parameter Exchange and Negotiation ...............12 4. NSIS-Specific Threat Scenarios .................................12 4.1. Threats during NSIS SA Usage ..............................13 4.2. Flooding ..................................................13 4.3. Eavesdropping and Traffic Analysis ........................15 4.4. Identity Spoofing .........................................15 4.5. Unprotected Authorization Information .....................17 4.6. Missing Non-Repudiation ...................................18 4.7. Malicious NSIS Entity .....................................19 4.8. Denial of Service Attacks .................................20 4.9. Disclosing the Network Topology ...........................21 4.10. Unprotected Session or Reservation Ownership .............21 4.11. Attacks against the NTLP .................................23 5. Security Considerations ........................................23 6. Contributors ...................................................24 7. Acknowledgements ...............................................24 8. References .....................................................25 8.1. Normative References ......................................25 8.2. Informative References ....................................25
1. Introduction
Whenever a new protocol is developed or existing protocols are modified, threats to their security should be evaluated. To address security in the NSIS working group, a number of steps have been taken:
NSIS Analysis Activities (see [RSVP-SEC] and [SIG-ANAL])
Security Threats for NSIS
NSIS Requirements (see [RFC3726])
NSIS Framework (see [RFC4080])
NSIS Protocol Suite (see GIMPS [GIMPS], NAT/Firewall NSLP