Add security rules for tormysql and webrepl libraries in Python applications #112
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WalkthroughThis pull request introduces new security rules for Python applications that utilize the Changes
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Actionable comments posted: 4
🧹 Outside diff range and nitpick comments (14)
tests/python/python-webrepl-empty-password-python-test.yml (1)
6-11: Consider adding more edge cases for comprehensive testing.While the current invalid test cases cover empty string scenarios well, consider adding tests for:
Nonepassword- Undefined password parameter
- Whitespace-only password
invalid: - | webrepl.start(password="") - | EMPTY_PASSWORD = "" webrepl.start(password=EMPTY_PASSWORD) + - | + webrepl.start(password=None) + - | + webrepl.start(password=" ") + - | + webrepl.start()tests/python/python-tormysql-empty-password-python-test.yml (2)
3-4: Consider documenting CONFIG source for clarity.The valid test case uses
CONFIG["db_password"], but the source and validation of this configuration aren't immediately clear.Consider adding a comment explaining where CONFIG is defined and how it's validated.
1-12: Standardize connection object naming and parameter testing.
- Connection numbering is inconsistent (conn1, conn2, conn4, conn7)
- Tests mix 'password' and deprecated 'passwd' parameters
Consider reorganizing the tests:
id: python-tormysql-empty-password-python valid: - | - conn7 = tormysql.ConnectionPool(password=CONFIG["db_password"]) + conn1 = tormysql.ConnectionPool(password=CONFIG["db_password"]) invalid: # Testing 'password' parameter - | - conn1 = tormysql.ConnectionPool(password="") + conn2 = tormysql.ConnectionPool(password="") - | EMPTY_PASSWORD = "" - conn2 = tormysql.ConnectionPool(password=EMPTY_PASSWORD) + conn3 = tormysql.ConnectionPool(password=EMPTY_PASSWORD) # Testing deprecated 'passwd' parameter - | - conn4 = tormysql.ConnectionPool(passwd="") + conn4 = tormysql.ConnectionPool(passwd="")tests/python/python-tormysql-hardcoded-secret-python-test.yml (1)
9-13: Use stronger passwords in test cases.While these are just test cases, using weak passwords like "123secure" might inadvertently promote poor password practices in documentation or examples.
Consider using more complex passwords in test cases:
invalid: - | - conn1 = tormysql.ConnectionPool(password="hardcoded_password") + conn1 = tormysql.ConnectionPool(password="H@rdC0ded_P@ssw0rd_2024!") - | - HARDCODED_PASSWORD = "123secure" + HARDCODED_PASSWORD = "Compl3x_H@rdC0ded_P@ssphrase!" conn4 = tormysql.ConnectionPool(password=HARDCODED_PASSWORD)rules/python/security/python-webrepl-empty-password-python.yml (3)
4-15: Enhance security documentation with specific recommendationsThe security message and documentation are well-structured with good references to CWE-287 and OWASP. Consider enhancing it with:
- Specific secure vault solutions (e.g., HashiCorp Vault, AWS Secrets Manager)
- Examples of secure environment variable usage
- Links to language-specific secure coding guidelines
17-50: Consider additional empty password patternsThe
match_callpattern effectively catches empty string passwords, but consider extending it to catch:
None/nullpasswords- Default passwords (e.g., "password", "admin")
- Whitespace-only passwords
match_call: kind: call all: - has: kind: argument_list has: kind: keyword_argument all: - has: kind: identifier field: name regex: "^password$" - has: + any: + - has: kind: string field: value all: - has: kind: string_start - has: kind: string_end + - has: + kind: constant + field: value + regex: "^None$" + - has: + kind: string + field: value + regex: "^(password|admin)$"
51-110: Improve variable tracking in match_call_with_identifierThe pattern effectively tracks variables assigned empty strings, but could be enhanced to:
- Track variables assigned
None- Track variables with string concatenation resulting in empty strings
- Consider tracking through multiple assignments
tests/__snapshots__/python-webrepl-empty-password-python-snapshot.yml (1)
1-113: Expand test coverage with additional scenariosWhile the current test cases cover basic empty password scenarios, consider adding:
None/nullpasswords:webrepl.start(password=None)
- Whitespace-only passwords:
webrepl.start(password=" ")
- Empty string through concatenation:
PREFIX = "" SUFFIX = "" webrepl.start(password=PREFIX + SUFFIX)tests/__snapshots__/python-tormysql-hardcoded-secret-python-snapshot.yml (3)
4-5: Use more obvious test valuesReplace potentially misleading test passwords with obviously fake values to prevent accidental reuse:
-HARDCODED_PASSWORD = "123secure" +HARDCODED_PASSWORD = "TEST_PASSWORD_DO_NOT_USE"
60-61: Use consistent test data patternsFor consistency and clarity, use similar test value patterns across all test cases:
-conn1 = tormysql.ConnectionPool(password="hardcoded_password") +conn1 = tormysql.ConnectionPool(password="TEST_HARDCODED_PASSWORD_DO_NOT_USE")
Line range hint
1-113: Add test cases for common password patternsConsider adding test cases for:
- Base64 encoded passwords
- Common default passwords
- Passwords with special characters
- Password string concatenation
Example additions:
# Base64 encoded conn2 = tormysql.ConnectionPool(password="dGVzdHBhc3N3b3Jk") # Common default conn3 = tormysql.ConnectionPool(password="admin123") # Special characters conn4 = tormysql.ConnectionPool(password="test@#$%^&") # Concatenation PREFIX = "test" SUFFIX = "pass" conn5 = tormysql.ConnectionPool(password=PREFIX + SUFFIX)tests/__snapshots__/python-tormysql-empty-password-python-snapshot.yml (1)
1-148: Consider adding more test cases for comprehensive coverage.The current test cases effectively cover basic empty password scenarios. Consider adding these additional cases to strengthen the test coverage:
- Environment variable usage (e.g.,
password=os.getenv("DB_PASSWORD", ""))- None/null password (e.g.,
password=None)- Whitespace-only password (e.g.,
password=" ")rules/python/security/python-tormysql-hardcoded-secret-python.yml (1)
49-49: Consider case-insensitive matching for parameter names.The current regex
^(password|passwd)$is case-sensitive. Consider using case-insensitive matching to catch variations likePASSWORD,Password, etc.- regex: ^(password|passwd)$ + regex: (?i)^(password|passwd)$rules/python/security/python-tormysql-empty-password-python.yml (1)
4-15: Add specific remediation steps in the message.The current message provides general guidance. Consider adding specific examples of secure implementations:
message: >- The application creates a database connection with an empty password. This can lead to unauthorized access by either an internal or external malicious actor. To prevent this vulnerability, enforce authentication when connecting to a database by using environment variables to securely provide credentials or retrieving them from a secure vault or HSM - (Hardware Security Module). + (Hardware Security Module). + + Example of secure implementation: + ```python + import os + from pathlib import Path + from dotenv import load_dotenv + + # Load environment variables from .env file + load_dotenv() + + # Get password from environment variable with validation + db_password = os.getenv('DB_PASSWORD') + if not db_password: + raise ValueError("Database password not configured") + + # Create connection with secure password + conn = tormysql.ConnectionPool(password=db_password) + ```
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📒 Files selected for processing (9)
rules/python/security/python-tormysql-empty-password-python.yml(1 hunks)rules/python/security/python-tormysql-hardcoded-secret-python.yml(1 hunks)rules/python/security/python-webrepl-empty-password-python.yml(1 hunks)tests/__snapshots__/python-tormysql-empty-password-python-snapshot.yml(1 hunks)tests/__snapshots__/python-tormysql-hardcoded-secret-python-snapshot.yml(1 hunks)tests/__snapshots__/python-webrepl-empty-password-python-snapshot.yml(1 hunks)tests/python/python-tormysql-empty-password-python-test.yml(1 hunks)tests/python/python-tormysql-hardcoded-secret-python-test.yml(1 hunks)tests/python/python-webrepl-empty-password-python-test.yml(1 hunks)
🔇 Additional comments (2)
tests/python/python-webrepl-empty-password-python-test.yml (1)
3-5: LGTM! Secure implementation of password handling.
The valid test case correctly demonstrates retrieving the password from an environment variable, which is a security best practice.
tests/python/python-tormysql-hardcoded-secret-python-test.yml (1)
6-7: LGTM! Secure implementation using environment variable.
The valid test case correctly demonstrates retrieving the password from an environment variable.
Summary by CodeRabbit
New Features
tormysqlandwebrepllibraries.Bug Fixes
Tests