Add security rules for detecting hard-coded secrets in C# and Python #99
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WalkthroughThis pull request introduces new security rules in YAML files for C# and Python applications to detect hard-coded secrets and empty passwords in database connections. Specifically, it adds rules for the Changes
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (8)
tests/python/python-elasticsearch-hardcoded-bearer-auth-python-test.yml (2)
6-40: Consider adding more edge cases to the test suite.While the current test cases cover basic scenarios, consider adding:
- Bearer token with environment variables
- Bearer token with secure vault integration
- Bearer token with AWS Secrets Manager or similar services
🧰 Tools
🪛 yamllint (1.35.1)
[error] 40-40: trailing spaces
(trailing-spaces)
5-5: Fix formatting issues.There are trailing spaces and extra blank lines at the end of the file.
- + invalid: - | from elasticsearch import Elasticsearch @@ -40,3 +40,1 @@ - ).indices.get(index="*") - - + ).indices.get(index="*")Also applies to: 40-42
🧰 Tools
🪛 yamllint (1.35.1)
[error] 5-5: trailing spaces
(trailing-spaces)
rules/python/security/python-elasticsearch-hardcoded-bearer-auth-python.yml (1)
14-435: Consider adding examples in the documentation.The rule implementation is comprehensive and covers various patterns effectively. Consider adding code examples in the documentation to illustrate:
- ✅ Correct ways to provide bearer tokens
- ❌ Patterns that will trigger the rule
tests/python/python-peewee-mysql-empty-password-python-test.yml (1)
7-7: Remove trailing spacesRemove trailing spaces at the end of lines 7 and 24.
Also applies to: 24-24
🧰 Tools
🪛 yamllint (1.35.1)
[error] 7-7: trailing spaces
(trailing-spaces)
rules/python/security/python-peewee-mysql-empty-password-python.yml (1)
31-31: Fix indentation inconsistenciesThe file has multiple indentation issues. Please ensure consistent indentation throughout the file.
Also applies to: 40-40, 57-57, 69-69, 73-73, 76-76, 85-85, 95-95, 110-110, 119-119, 131-131, 146-146, 161-161, 180-180, 190-190, 194-194, 197-197, 206-206, 211-211
🧰 Tools
🪛 yamllint (1.35.1)
[warning] 31-31: wrong indentation: expected 10 but found 12
(indentation)
tests/csharp/oracleconnectionstringbuilder-hardcoded-secret-csharp-test.yml (2)
2-4: Consider adding more valid test cases.The test configuration would benefit from additional valid examples demonstrating other secure patterns, such as:
- Reading from environment variables
- Using secure configuration providers
- Using Azure Key Vault or other secret management services
valid: - | builder.Password = args[1]; + - | + builder.Password = Environment.GetEnvironmentVariable("DB_PASSWORD"); + - | + builder.Password = configuration.GetValue<string>("ConnectionStrings:Password"); + - | + builder.Password = await keyVaultClient.GetSecretAsync("DbPassword");
6-29: Add test cases for connection string parsing.The test suite should also validate scenarios where passwords are extracted from connection strings, as this is another common pattern where secrets might be hard-coded.
invalid: + - | + private OracleConnectionStringBuilder GetConnection(args) + { + return new OracleConnectionStringBuilder("Data Source=localhost;Password=hardcoded123;"); + } // ... existing test cases ...rules/csharp/security/oracleconnectionstringbuilder-hardcoded-secret-csharp.yml (1)
4-14: Enhance security message with concrete examples.The warning message could be more actionable by including specific examples of secure alternatives.
message: >- A secret is hard-coded in the application. Secrets stored in source code, such as credentials, identifiers, and other types of sensitive data, can be leaked and used by internal or external malicious actors. Use environment variables to securely provide credentials and other secrets or - retrieve them from a secure vault or Hardware Security Module (HSM). + retrieve them from a secure vault or Hardware Security Module (HSM). + + Examples of secure alternatives: + - Environment variables: builder.Password = Environment.GetEnvironmentVariable("DB_PASSWORD"); + - Configuration providers: builder.Password = configuration.GetValue<string>("ConnectionStrings:Password"); + - Azure Key Vault: builder.Password = await keyVaultClient.GetSecretAsync("DbPassword");
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📒 Files selected for processing (9)
rules/csharp/security/oracleconnectionstringbuilder-hardcoded-secret-csharp.yml(1 hunks)rules/python/security/python-elasticsearch-hardcoded-bearer-auth-python.yml(1 hunks)rules/python/security/python-peewee-mysql-empty-password-python.yml(1 hunks)tests/__snapshots__/oracleconnectionstringbuilder-hardcoded-secret-csharp-snapshot.yml(1 hunks)tests/__snapshots__/python-elasticsearch-hardcoded-bearer-auth-python-snapshot.yml(1 hunks)tests/__snapshots__/python-peewee-mysql-empty-password-python-snapshot.yml(1 hunks)tests/csharp/oracleconnectionstringbuilder-hardcoded-secret-csharp-test.yml(1 hunks)tests/python/python-elasticsearch-hardcoded-bearer-auth-python-test.yml(1 hunks)tests/python/python-peewee-mysql-empty-password-python-test.yml(1 hunks)
🧰 Additional context used
🪛 yamllint (1.35.1)
tests/python/python-elasticsearch-hardcoded-bearer-auth-python-test.yml
[error] 5-5: trailing spaces
(trailing-spaces)
[error] 40-40: trailing spaces
(trailing-spaces)
[warning] 42-42: too many blank lines
(2 > 0) (empty-lines)
rules/python/security/python-peewee-mysql-empty-password-python.yml
[warning] 31-31: wrong indentation: expected 10 but found 12
(indentation)
[warning] 40-40: wrong indentation: expected 20 but found 19
(indentation)
[warning] 57-57: wrong indentation: expected 10 but found 12
(indentation)
[error] 69-69: trailing spaces
(trailing-spaces)
[warning] 73-73: wrong indentation: expected 12 but found 14
(indentation)
[warning] 76-76: wrong indentation: expected 14 but found 16
(indentation)
[warning] 85-85: wrong indentation: expected 24 but found 23
(indentation)
[warning] 95-95: wrong indentation: expected 8 but found 10
(indentation)
[warning] 110-110: wrong indentation: expected 10 but found 12
(indentation)
[warning] 119-119: wrong indentation: expected 20 but found 19
(indentation)
[warning] 131-131: wrong indentation: expected 12 but found 14
(indentation)
[warning] 146-146: wrong indentation: expected 8 but found 10
(indentation)
[warning] 161-161: wrong indentation: expected 10 but found 12
(indentation)
[warning] 180-180: wrong indentation: expected 12 but found 14
(indentation)
[error] 190-190: trailing spaces
(trailing-spaces)
[warning] 194-194: wrong indentation: expected 12 but found 14
(indentation)
[warning] 197-197: wrong indentation: expected 14 but found 16
(indentation)
[warning] 206-206: wrong indentation: expected 24 but found 23
(indentation)
[warning] 211-211: wrong indentation: expected 2 but found 4
(indentation)
tests/python/python-peewee-mysql-empty-password-python-test.yml
[error] 7-7: trailing spaces
(trailing-spaces)
[error] 24-24: trailing spaces
(trailing-spaces)
🔇 Additional comments (8)
tests/python/python-elasticsearch-hardcoded-bearer-auth-python-test.yml (1)
2-4: LGTM! Well-structured test cases.
The valid test case correctly demonstrates proper instantiation of the Elasticsearch client without hardcoded secrets.
tests/__snapshots__/python-elasticsearch-hardcoded-bearer-auth-python-snapshot.yml (1)
1-298: LGTM! Well-structured test snapshots.
The snapshots provide comprehensive coverage of the test cases with proper style annotations for highlighting.
rules/python/security/python-elasticsearch-hardcoded-bearer-auth-python.yml (2)
1-13: LGTM! Well-documented security rule.
The rule provides clear guidance with appropriate references to CWE-798 and OWASP documentation.
436-445: LGTM! Comprehensive pattern matching.
The rule effectively matches all common patterns of hardcoded bearer token usage in Elasticsearch clients.
rules/python/security/python-peewee-mysql-empty-password-python.yml (1)
23-23: Verify database class patterns
The regex patterns for database classes look good, but let's verify they catch all possible variations.
Also applies to: 49-49, 102-102, 137-137, 153-153
✅ Verification successful
Database class patterns are comprehensive and accurate
Based on the search results from the test files and rule definitions, the regex pattern correctly covers all MySQL-related database classes used in the codebase:
MySQLDatabase(direct and peewee-prefixed)MySQLConnectorDatabase(direct and playhouse.mysql_ext-prefixed)MariaDBConnectorDatabase(direct and playhouse.mysql_ext-prefixed)PooledMySQLDatabase(direct and playhouse.pool-prefixed)
The test files confirm these are the actual patterns used in real code scenarios, and no additional variations were found.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for any MySQL-related database class definitions that might not be covered
rg -l "class.*MySQL.*Database"
Length of output: 32
Script:
#!/bin/bash
# Let's try a broader search for MySQL database related patterns in the codebase
rg -i "mysql.*database|database.*mysql" -A 2
# Also search for peewee database imports or usage
rg -i "peewee.*database|from peewee import.*database" -A 2
# Search for playhouse database related imports
rg -i "playhouse.*database|from playhouse import.*database" -A 2
Length of output: 14775
tests/__snapshots__/python-peewee-mysql-empty-password-python-snapshot.yml (1)
1-284: LGTM! Snapshot implementation is comprehensive
The snapshot file correctly maps all test cases with accurate source segments and line numbers.
tests/__snapshots__/oracleconnectionstringbuilder-hardcoded-secret-csharp-snapshot.yml (1)
1-262: LGTM! Comprehensive snapshot coverage.
The snapshot file provides thorough coverage of different syntactic patterns and correctly maps source positions for accurate error reporting.
rules/csharp/security/oracleconnectionstringbuilder-hardcoded-secret-csharp.yml (1)
1-247: Verify rule effectiveness with real-world examples.
Let's verify the rule's effectiveness against common patterns in the codebase.
rules/csharp/security/oracleconnectionstringbuilder-hardcoded-secret-csharp.yml
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Summary by CodeRabbit
OracleConnectionStringBuilderfor C#.