Add security rules for detecting hard-coded secrets in C# and Python #98
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WalkthroughThis pull request introduces multiple security rules across C# and Python applications aimed at detecting hard-coded secrets. Specifically, it adds rules for the Changes
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Actionable comments posted: 4
🧹 Outside diff range and nitpick comments (9)
tests/python/python-pymssql-hardcoded-secret-python-test.yml (2)
24-53: Consider adding more test cases for comprehensive coverage.While the current test cases cover basic scenarios, consider adding tests for:
- Empty passwords
- Connection string URLs
- F-string interpolated passwords
- Password variables from config files
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🪛 yamllint (1.35.1)
[error] 47-47: trailing spaces
(trailing-spaces)
47-47: Remove trailing whitespace.Fix the trailing whitespace in line 47.
- pswd2 = get_from_config() + pswd2 = get_from_config()🧰 Tools
🪛 yamllint (1.35.1)
[error] 47-47: trailing spaces
(trailing-spaces)
rules/python/security/python-pymssql-hardcoded-secret-python.yml (1)
15-236: Consider enhancing pattern matching for edge cases.The current patterns could miss some security issues. Consider adding patterns for:
- Empty passwords
- Connection string URLs
- F-string interpolated passwords
Example pattern for empty passwords:
- has: stopBy: end kind: string field: value all: + - not: + has: + stopBy: end + kind: string_content - has: stopBy: end kind: string_startrules/python/security/python-pymysql-empty-password-python.yml (1)
17-66: Enhance pattern matching for additional empty password variantsThe current pattern only matches literal empty strings (
""). Consider extending it to catch:
- Single quotes (
'')- Triple quotes (
""""""or'''''')- String concatenation (
'' + '')Would you like me to provide the extended pattern matching implementation?
tests/python/python-pymysql-empty-password-python-test.yml (1)
2-6: Expand valid test cases for better coverageConsider adding these valid scenarios:
- Password from secure vault/HSM
- Password from encrypted configuration
- Password from AWS Secrets Manager or similar services
Would you like me to provide the additional test cases?
tests/csharp/oracleconnectionstringbuilder-hardcoded-secret-csharp-test.yml (2)
3-4: Consider enhancing the valid test cases.While using command-line arguments is better than hard-coding, consider adding more secure examples such as:
- Environment variables
- Azure Key Vault or other secure secret management solutions
- Configuration providers with encrypted values
6-29: Enhance test coverage with additional scenarios.The invalid test cases could be expanded to include:
- Empty passwords
- Connection strings with embedded credentials
- Passwords in string interpolation
- Passwords in constants or readonly fields
Additionally, consider using different password values across test cases to ensure the rule isn't just matching the specific string "reee!".
tests/__snapshots__/oracleconnectionstringbuilder-hardcoded-secret-csharp-snapshot.yml (1)
1-262: Consider adding metadata comments to snapshots.While the snapshots are technically correct, adding comments to describe:
- The security pattern being tested
- Expected detection behavior
- Relationship to CWE/OWASP guidelines
Would improve maintainability and help other developers understand the test cases.
rules/csharp/security/oracleconnectionstringbuilder-hardcoded-secret-csharp.yml (1)
4-14: Enhance security guidance in the message.The message provides good basic guidance but could be improved by:
- Adding specific examples of secure alternatives
- Mentioning the risks of source control exposure
- Referencing additional security resources
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📒 Files selected for processing (9)
rules/csharp/security/oracleconnectionstringbuilder-hardcoded-secret-csharp.yml(1 hunks)rules/python/security/python-pymssql-hardcoded-secret-python.yml(1 hunks)rules/python/security/python-pymysql-empty-password-python.yml(1 hunks)tests/__snapshots__/oracleconnectionstringbuilder-hardcoded-secret-csharp-snapshot.yml(1 hunks)tests/__snapshots__/python-pymssql-hardcoded-secret-python-snapshot.yml(1 hunks)tests/__snapshots__/python-pymysql-empty-password-python-snapshot.yml(1 hunks)tests/csharp/oracleconnectionstringbuilder-hardcoded-secret-csharp-test.yml(1 hunks)tests/python/python-pymssql-hardcoded-secret-python-test.yml(1 hunks)tests/python/python-pymysql-empty-password-python-test.yml(1 hunks)
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🪛 yamllint (1.35.1)
tests/python/python-pymssql-hardcoded-secret-python-test.yml
[error] 47-47: trailing spaces
(trailing-spaces)
🔇 Additional comments (6)
tests/python/python-pymssql-hardcoded-secret-python-test.yml (1)
2-23: LGTM! Valid test cases demonstrate secure password handling practices.
The test cases correctly validate three secure approaches:
- Using variable references
- Using environment variables
- Using getenv calls
tests/__snapshots__/python-pymssql-hardcoded-secret-python-snapshot.yml (1)
1-293: LGTM! Snapshot correctly documents the test cases.
The snapshot file properly captures:
- AST node positions
- Source code segments
- Style information for pattern matching
rules/python/security/python-pymssql-hardcoded-secret-python.yml (2)
1-14: LGTM! Clear documentation with appropriate security references.
The rule includes:
- Clear warning message
- Relevant CWE-798 reference
- OWASP A07:2021 reference
- Link to OWASP Secrets Management Cheat Sheet
237-241: LGTM! Rule composition correctly combines all patterns.
The rule properly combines all three patterns using the any operator.
tests/__snapshots__/python-pymysql-empty-password-python-snapshot.yml (1)
1-114: Snapshot file is well-structured but will need updates
The snapshot correctly captures the current test cases. However, it will need to be regenerated after implementing the suggested improvements to the rule and test cases.
rules/csharp/security/oracleconnectionstringbuilder-hardcoded-secret-csharp.yml (1)
242-247: Consider adding pattern validation.
The rule could benefit from additional validation to:
- Ensure patterns don't conflict
- Verify no false positives with similar property names
- Check for performance impact of complex patterns
rules/csharp/security/oracleconnectionstringbuilder-hardcoded-secret-csharp.yml
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Summary by CodeRabbit
Release Notes
New Features
OracleConnectionStringBuilderandpymssqllibraries.pymssqlandpymysql.Bug Fixes
Tests