Added confidential checker #6981
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…ed references in code as necessary
…caped SQL values as SqlSanitized.
SQL tainting qualifiers and basic tests
…and SqlSanitizedUser
…bined SqlQuoteless and SqlEvenQuotes; revised documentations
mernst
requested changes
Jun 6, 2025
checker/src/main/java/org/checkerframework/checker/confidential/ConfidentialTransfer.java
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checker/src/main/java/org/checkerframework/checker/confidential/ConfidentialTransfer.java
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# Conflicts: # checker/src/main/java/org/checkerframework/checker/confidential/ConfidentialTransfer.java
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Pull Request Overview
This PR adds a new Confidential Checker to the Checker Framework that identifies sensitive information exposure (information leakage). The checker prevents confidential values from flowing to non-confidential locations, helping prevent security vulnerabilities like PII exposure in logs, UI elements, or other public-facing sinks.
Key changes:
- Implements a complete type system with
@Confidential,@NonConfidential,@UnknownConfidential, and related qualifiers - Adds extensive library annotations for logging frameworks (Log4j, SLF4J, Apache Commons), Android UI components, and Spring Security
- Includes comprehensive documentation and test cases
Reviewed Changes
Copilot reviewed 49 out of 50 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| checker-qual/src/main/java/org/checkerframework/checker/confidential/qual/*.java | Core qualifier annotations defining the confidential type hierarchy |
| checker/src/main/java/org/checkerframework/checker/confidential/*.java | Main checker implementation with type factory, visitor, and transfer functions |
| checker/src/main/java/org/checkerframework/checker/confidential/*.astub | Library annotations for popular frameworks (Spring Security, logging libraries, Android) |
| docs/manual/confidential-checker.tex | Complete documentation chapter explaining the checker's purpose and usage |
| framework/tests/all-systems/*.java | Test files with @SuppressWarnings annotations for confidential checker warnings |
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Associated with JDK pull request #224