DOS detector

[vijayarawat19]

The new detector logic is being implemented to check for the dos detection in the smart contract.

Summary by CodeRabbit

• New Features

  • Introduced a new node type CONDITION for improved code analysis.
  • Added DOSDetector to identify potential Denial of Service (DoS) vulnerabilities in Solidity contracts.

• Tests

  • Implemented tests for the new DOSDetector functionality, ensuring reliability in detecting DoS vulnerabilities.

[coderabbitai]

Walkthrough

This update introduces a new detector to Slither, aimed at identifying potential Denial of Service (DoS) vulnerabilities in Solidity contracts. By analyzing loops without proper exit conditions and providing mitigation recommendations, this enhancement strengthens security analysis for smart contracts, particularly against DoS attacks.

Changes

Files	Summary
slither/core/cfg/node.py	Added CONDITION node type to NodeType enum.
slither/detectors/all_detectors.py	Included DOSDetector in the list of imported functions.
slither/detectors/functions/dos_detector.py	Introduced DOSDetector for detecting DoS vulnerabilities in Solidity contracts.
tests/e2e/detectors/.../dosdetector/0.6.11/dos_detect.sol	Added Solidity test file for DoS vulnerability detection.
tests/e2e/detectors/test_detectors.py	Implemented a new test for the DOSDetector targeting Solidity version 0.6.11.

Possibly related issues

• Detectors related to improper usage of Oracle APIs #2283: While this issue focuses on detecting improper usage of Oracle APIs, the addition of a new detector for DoS vulnerabilities shares the objective of enhancing security analysis in smart contracts. Both aim to broaden Slither's detection capabilities, albeit in different areas.

🐰✨
In the burrows of the code, where logic tightly loops,
A rabbit hops with caution, for vulnerabilities it scoops.
With a keen eye for danger, in a digital expanse,
It finds the hidden pitfalls, giving contracts a chance.
"Beware the endless cycles," it whispers to the bytes,
"For I am CodeRabbit, guardian of digital nights."
🌙🔍

Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. If you find it useful, would you consider giving us a shout-out on your favorite social media?

Share

• X
• Mastodon
• Reddit
• LinkedIn

---

Tips

Chat

There are 3 ways to chat with CodeRabbit:

• Review comments: Directly reply to a review comment made by CodeRabbit. Example:
  • I pushed a fix in commit <commit_id>.
  • Generate unit testing code for this file.
  • Open a follow-up GitHub issue for this discussion.
• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query. Examples:
  • @coderabbitai generate unit testing code for this file.
  • @coderabbitai modularize this function.
• PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  • @coderabbitai generate interesting stats about this repository and render them as a table.
  • @coderabbitai show all the console.log statements in this repository.
  • @coderabbitai read src/utils.ts and generate unit testing code.
  • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.

Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments.

CodeRabbit Commands (invoked as PR comments)

• @coderabbitai pause to pause the reviews on a PR.
• @coderabbitai resume to resume the paused reviews.
• @coderabbitai review to trigger a review. This is useful when automatic reviews are disabled for the repository.
• @coderabbitai resolve resolve all the CodeRabbit review comments.
• @coderabbitai help to get help.

Additionally, you can add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.

CodeRabbit Configration File (.coderabbit.yaml)

• You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
• Please see the configuration documentation for more information.
• If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/coderabbit-overrides.v2.json

Documentation and Community

• Visit our Documentation for detailed information on how to use CodeRabbit.
• Join our Discord Community to get help, request features, and share feedback.
• Follow us on X/Twitter for updates and announcements.

[coderabbitai]

Actionable comments posted: 0

Review Status

Configuration used: CodeRabbit UI

Commits

Files that changed from the base of the PR and between 13d7d9f and 0f519c8.

Files ignored due to path filters (1)

• tests/e2e/detectors/test_data/dosdetector/0.6.11/dos_detect.sol-0.6.11.zip is excluded by !**/*.zip

Files selected for processing (5)

• slither/core/cfg/node.py (1 hunks)
• slither/detectors/all_detectors.py (1 hunks)
• slither/detectors/functions/dos_detector.py (1 hunks)
• tests/e2e/detectors/test_data/dosdetector/0.6.11/dos_detect.sol (1 hunks)
• tests/e2e/detectors/test_detectors.py (1 hunks)

Files not reviewed due to errors (1)

• (no review received)

Additional comments not posted (13)

tests/e2e/detectors/test_data/dosdetector/0.6.11/dos_detect.sol (7)

12-15: The infiniteLoop function correctly simulates an infinite loop scenario for testing DoS vulnerability detection.

---

20-22: The addUser function is implemented correctly and does not contribute to DoS vulnerability.

---

24-27: The getUser function is implemented correctly and does not contribute to DoS vulnerability.

---

29-32: The updateUserName function is implemented correctly and does not contribute to DoS vulnerability.

---

34-41: The performComplexComputation function correctly simulates a computationally intensive scenario for testing DoS vulnerability detection.

---

44-47: The first triggerDOS function correctly simulates a scenario for testing DoS vulnerability detection by calling a computationally intensive function.

---

63-69: The second triggerDOS function correctly simulates a scenario for testing DoS vulnerability detection by including a loop that consumes a large amount of gas.

slither/detectors/functions/dos_detector.py (4)

32-38: Consider adding a comment explaining the scope of loop detection handled by detect_infinite_loop_calls to aid future development and maintenance.

---

41-61: Ensure detect_infinite_calls correctly identifies all types of infinite loops and consider adding error handling for potential edge cases in the control flow graph traversal.

---

64-98: Ensure has_exit_condition covers all scenarios where a loop might not have an exit condition and consider refining the logic to improve accuracy.

---

100-131: Verify the accuracy of the detection logic in DOSDetector and ensure that the recommendations provided are actionable for developers.

slither/detectors/all_detectors.py (1)

14-14: Verify the import path for DOSDetector is correct and ensure there are no naming conflicts with existing detectors.

slither/core/cfg/node.py (1)

80-80: Verify the integration of the CONDITION node type throughout the framework to ensure it doesn't introduce any inconsistencies.

[0xalpharush]

Hi, appreciate your interest in contributing and the time you invested opening this PR! This is similar to an existing detector which we may remove in the future as it causes many false positives. Out-of-gas issues are probably better suited for dynamical analysis like testing/fuzzing. For those reasons, I am going to close this