Add security rules for detecting hard-coded secrets in C# and Python #100
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WalkthroughThis pull request introduces new security rules aimed at detecting hard-coded secrets in C# and Python applications. Specifically, it adds a rule for detecting hard-coded credentials in C# using the Changes
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Actionable comments posted: 3
🧹 Outside diff range and nitpick comments (7)
rules/python/security/python-peewee-mysql-hardcoded-secret-python.yml (1)
22-22: Consider adding more database classesThe regex pattern for database classes is comprehensive but could potentially include more classes from Peewee ecosystem.
Consider adding patterns for:
PostgresqlDatabaseSqliteDatabase- Other database-specific classes if they support password authentication
tests/python/python-peewee-pg-empty-password-python-test.yml (1)
26-26: Remove trailing whitespaceRemove the trailing whitespace at the end of the file.
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🪛 yamllint (1.35.1)
[error] 26-26: trailing spaces
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rules/csharp/security/networkcredential-hardcoded-secret-csharp.yml (4)
4-14: Enhance security context with additional referencesConsider adding these valuable security references to strengthen the guidance:
- NIST SP 800-53 Rev. 5 (IA-5)
- CWE-259 (Use of Hard-coded Password)
- Azure Key Vault or AWS Secrets Manager documentation for practical implementation
43-101: Simplify pattern matching for better maintainabilityThe current nested pattern matching is complex. Consider breaking it down into smaller, reusable patterns:
- Extract the Password property access pattern
- Extract the string literal validation pattern
- Create a shared utility for NetworkCredential type checking
101-233: Consider performance implications of complex pattern matchingThe nested pattern matching for variable tracking could impact performance on large codebases. Consider:
- Implementing a more efficient variable tracking mechanism
- Adding early termination conditions
- Caching intermediate results
233-238: Consider pattern prioritization for efficiencyThe current rule checks all patterns without prioritization. Consider ordering patterns by:
- Frequency of occurrence (most common patterns first)
- Computational complexity (simpler patterns first)
tests/__snapshots__/networkcredential-hardcoded-secret-csharp-snapshot.yml (1)
1-258: Improve snapshot organization for better maintainabilityConsider organizing snapshots by:
- Grouping related test cases
- Adding descriptive comments for each scenario
- Reducing duplicate label definitions
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📒 Files selected for processing (9)
rules/csharp/security/networkcredential-hardcoded-secret-csharp.yml(1 hunks)rules/python/security/python-peewee-mysql-hardcoded-secret-python.yml(1 hunks)rules/python/security/python-peewee-pg-empty-password-python.yml(1 hunks)tests/__snapshots__/networkcredential-hardcoded-secret-csharp-snapshot.yml(1 hunks)tests/__snapshots__/python-peewee-mysql-hardcoded-secret-python-snapshot.yml(1 hunks)tests/__snapshots__/python-peewee-pg-empty-password-python-snapshot.yml(1 hunks)tests/csharp/networkcredential-hardcoded-secret-csharp-test.yml(1 hunks)tests/python/python-peewee-mysql-hardcoded-secret-python-test.yml(1 hunks)tests/python/python-peewee-pg-empty-password-python-test.yml(1 hunks)
🧰 Additional context used
🪛 yamllint (1.35.1)
tests/python/python-peewee-mysql-hardcoded-secret-python-test.yml
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rules/python/security/python-peewee-mysql-hardcoded-secret-python.yml
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tests/python/python-peewee-pg-empty-password-python-test.yml
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rules/python/security/python-peewee-pg-empty-password-python.yml
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🔇 Additional comments (10)
tests/python/python-peewee-mysql-hardcoded-secret-python-test.yml (1)
6-22: LGTM: Comprehensive test coverage for invalid cases
The test cases effectively cover various scenarios of hard-coded secrets:
- Direct string passwords
- Variable-based passwords
- Different database classes
- Different parameter names (password/passwd)
🧰 Tools
🪛 yamllint (1.35.1)
[error] 7-7: trailing spaces
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rules/python/security/python-peewee-mysql-hardcoded-secret-python.yml (2)
4-13: LGTM: Well-documented security rule
The rule includes:
- Clear description of the security risk
- Reference to CWE-798
- Link to OWASP Secrets Management guidelines
14-202: LGTM: Comprehensive pattern matching
The rule effectively captures:
- Direct password strings in constructor
- Variable-based passwords
- Different initialization methods
- Both 'password' and 'passwd' parameter names
🧰 Tools
🪛 yamllint (1.35.1)
[warning] 30-30: wrong indentation: expected 10 but found 12
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[warning] 55-55: wrong indentation: expected 10 but found 12
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tests/__snapshots__/python-peewee-mysql-hardcoded-secret-python-snapshot.yml (1)
1-308: LGTM: Well-structured test snapshots
The snapshots provide:
- Accurate source mapping for each code pattern
- Coverage of different initialization methods
- Proper labeling of code segments
tests/python/python-peewee-pg-empty-password-python-test.yml (1)
7-24: LGTM! Comprehensive test coverage for empty password scenarios
The test cases effectively cover various scenarios of empty password usage:
- Direct empty string password
- Variable-based empty password
- Empty password in database initialization
- Empty password across different database classes (PostgreSQL, Pooled, CockroachDB)
rules/python/security/python-peewee-pg-empty-password-python.yml (3)
4-14: LGTM! Clear and informative security message
The message effectively communicates:
- The security risk of empty passwords
- The potential impact (unauthorized access)
- Recommended solutions (environment variables, secure vault, HSM)
- Relevant security references (OWASP, CWE-287)
15-207: LGTM! Comprehensive pattern matching for empty passwords
The utility patterns effectively cover all scenarios:
- Direct constructor calls with empty passwords
- Variable-based empty passwords
- Database initialization with empty passwords
- Support for all relevant database classes (PostgreSQL, CockroachDB, pooled variants)
🧰 Tools
🪛 yamllint (1.35.1)
[warning] 31-31: wrong indentation: expected 10 but found 12
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208-214: LGTM! Well-structured rule definition
The rule effectively combines all utility patterns to catch empty passwords in various scenarios.
🧰 Tools
🪛 yamllint (1.35.1)
[warning] 211-211: wrong indentation: expected 2 but found 4
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tests/__snapshots__/python-peewee-pg-empty-password-python-snapshot.yml (1)
1-312: LGTM! Well-structured test snapshots
The snapshots:
- Accurately capture all test scenarios
- Provide detailed source mapping for each component
- Use appropriate label categorization (primary/secondary)
- Match the test cases in the configuration file
rules/csharp/security/networkcredential-hardcoded-secret-csharp.yml (1)
16-42: 🛠️ Refactor suggestion
Consider additional string patterns for comprehensive detection
The current pattern might miss hardcoded secrets in these scenarios:
- String concatenation:
new NetworkCredential("user", "pass" + "word") - String interpolation:
new NetworkCredential("user", $"pass{word}")
Summary by CodeRabbit
New Features
Tests