| Title | Tolerating Resource Exhaustion Attacks in the Time-Triggered Architecture |
| Publication Type | Conference Paper |
| Year of Publication | 2022 |
| Authors | Alkoudsi, Mohammad Ibrahim, Fohler, Gerhard, Völp, Marcus |
| Conference Name | 2022 XII Brazilian Symposium on Computing Systems Engineering (SBESC) |
| Keywords | Architecture, Computer architecture, Fault tolerance, Fault tolerant systems, interconnected systems, intrusion-tolerance, proactive recovery, pubcrawl, reactive recovery, Real-time Systems, resilience, Resiliency, safety-critical real-time systems, System recovery, Systems engineering and theory, time-triggered architecture |
| Abstract | The Time-Triggered Architecture (TTA) presents a blueprint for building safe and real-time constrained distributed systems, based on a set of orthogonal concepts that make extensive use of the availability of a globally consistent notion of time and a priori knowledge of events. Although the TTA tolerates arbitrary failures of any of its nodes by architectural means (active node replication, a membership service, and bus guardians), the design of these means considers only accidental faults. However, distributed safety- and real-time critical systems have been emerging into more open and interconnected systems, operating autonomously for prolonged times and interfacing with other possibly non-real-time systems. Therefore, the existence of vulnerabilities that adversaries may exploit to compromise system safety cannot be ruled out. In this paper, we discuss potential targeted attacks capable of bypassing TTA's fault-tolerance mechanisms and demonstrate how two well-known recovery techniques - proactive and reactive rejuvenation - can be incorporated into TTA to reduce the window of vulnerability for attacks without introducing extensive and costly changes. |
| DOI | 10.1109/SBESC56799.2022.9964703 |
| Citation Key | alkoudsi_tolerating_2022 |
Tolerating Resource Exhaustion Attacks in the Time-Triggered Architecture