Objective: To cause a Denial of Service (DoS) or achieve Remote Code Execution (RCE) on an application using the Tokio runtime by exploiting Tokio-specific vulnerabilities or misconfigurations.
Compromise Application (DoS or RCE) | --------------------------------------------------- | Misuse Tokio Features/Misconfigurations |
| | Too Many Tasks [HR] Unbounded Channels [HR]
Attack Tree Path: Critical Node: Resource Exhaustion (Tokio-Specific)
Description: Attacks that aim to exhaust resources managed by the Tokio runtime, leading to a Denial of Service. This is distinct from general OS-level resource exhaustion. Likelihood: Medium to High Impact: Medium to High (DoS, potential for limited data leaks if combined with other vulnerabilities) Effort: Low to Medium Skill Level: Novice to Intermediate Detection Difficulty: Medium
Attack Tree Path: High-Risk Path: Too Many Tasks
Description: Spawning an excessive number of Tokio tasks, overwhelming the scheduler or exceeding configured limits. Likelihood: High Impact: Medium Effort: Low Skill Level: Novice Detection Difficulty: Medium
Attack Tree Path: High-Risk Path: Unbounded Channels
Description: Flooding unbounded mpsc channels with messages, leading to excessive memory consumption within Tokio's internal structures.
Likelihood: Medium
Impact: High
Effort: Low
Skill Level: Novice
Detection Difficulty: Medium
Attack Tree Path: Critical Node: Race Conditions (Tokio/App Logic)
Description: Concurrent access to shared mutable state without proper synchronization, leading to unpredictable behavior, data corruption, or potentially exploitable vulnerabilities. Likelihood: Medium to High Impact: Low to Very High (data corruption, crashes, unpredictable behavior, potentially exploitable for RCE in complex scenarios) Effort: Low to Medium Skill Level: Intermediate to Advanced Detection Difficulty: Medium to Hard