Add security rules for XML processing and database connection vulnerabilities #114
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WalkthroughThis pull request introduces three new security rules for Java applications, focusing on XML processing and database connection vulnerabilities. The rules target potential security risks in Changes
Sequence DiagramsequenceDiagram
participant Dev as Developer
participant Rule as Security Rule
participant Code as Java Code
Dev->>Code: Writes XML processing code
Code->>Rule: Invokes security check
Rule->>Rule: Analyze XML entity settings
Rule->>Code: Flag potential security risks
Rule->>Dev: Provide warning about unsafe configuration
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Actionable comments posted: 3
🧹 Nitpick comments (12)
tests/java/documentbuilderfactory-external-parameter-entities-true-java-test.yml (1)
5-9: Consider expanding test coverage for edge cases.While the basic cases are covered, consider adding tests for:
- Case sensitivity variations of the feature string
- Different boolean representations (Boolean.TRUE, 1, etc.)
- Chained configurations with other security-related features
tests/java/documentbuilderfactory-external-general-entities-true-java-test.yml (1)
6-10: Consider adding test cases for combined security features.While individual feature testing is good, consider adding test cases that combine multiple security features to ensure they work together correctly:
- External general entities with DTD processing
- External general entities with external parameter entities
rules/java/security/documentbuilderfactory-external-parameter-entities-true-java.yml (2)
4-7: Consider enhancing the error message with examples.The message clearly identifies the issue but could be more helpful by including a code example of the correct configuration.
message: >- External entities are allowed for $DBFACTORY. This is vulnerable to XML external entity attacks. Disable this by setting the feature - "http://xml.org/sax/features/external-parameter-entities" to false. + "http://xml.org/sax/features/external-parameter-entities" to false. + Example: dbf.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
8-11: Enhance documentation with additional references.While the current reference is good, consider adding:
- OWASP XXE Prevention Cheat Sheet
- Links to related CVEs
- Java-specific security guidelines
tests/java/drivermanager-hardcoded-secret-java-test.yml (2)
3-4: Consider using a more secure example for the valid case.While demonstrating a connection without password is valid for testing, consider adding a comment explaining that this is just for testing purposes and real applications should use proper authentication.
7-16: Enhance test coverage for edge cases.The test cases cover basic scenarios but could be expanded to include:
- Connection strings with environment variables
- Connection pooling configurations
- Different database vendors
Would you like me to provide additional test cases?
rules/java/security/documentbuilderfactory-external-general-entities-true-java.yml (2)
4-12: Enhance security context in the message and notes.The security context could be improved by:
- Adding specific CVE references for XXE attacks
- Including examples of safe configurations
- Mentioning potential impact of XXE attacks
14-39: Fix YAML formatting issues and enhance pattern matching.The rule implementation has formatting inconsistencies and could be improved.
Apply these formatting fixes:
utils: match_expression_statement: - kind: expression_statement + kind: expression_statement has: - stopBy: end + stopBy: end kind: method_invocation all: - has: - stopBy: end + stopBy: end kind: identifier - has: - stopBy: end + stopBy: end kind: identifier regex: 'setFeature'🧰 Tools
🪛 yamllint (1.35.1)
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tests/__snapshots__/drivermanager-hardcoded-secret-java-snapshot.yml (1)
3-25: Consider obfuscating sensitive information in snapshots.While these are test cases, consider:
- Using placeholder values for database URLs
- Adding comments to indicate these are non-production examples
rules/java/security/drivermanager-hardcoded-secret-java.yml (3)
1-13: Consider adding more security referencesThe rule metadata is well-structured, but consider adding these additional relevant references:
- OWASP Top 10 A07:2021 - Identification and Authentication Failures
- CWE-259: Use of Hard-coded Password
14-133: Pattern matching could be more comprehensiveConsider enhancing the patterns to catch these additional cases:
- Properties files loaded via
Properties.load()- Spring's
JdbcTemplateconfigurations- Connection pools like HikariCP
Would you like me to provide example patterns for these cases?
🧰 Tools
🪛 yamllint (1.35.1)
[warning] 16-16: wrong indentation: expected 4 but found 3
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133-143: Consider adding pattern validationThe rule structure is good, but consider adding validation to reduce false positives:
- Check if the string is actually a password/secret using regex patterns
- Exclude test files and example code
Example validation pattern:
exclude: - kind: file regex: '^.*[Tt]est.*\.java$' validation: - kind: string_literal regex: '(?i).*(password|secret|key|token).*'
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (9)
rules/java/security/documentbuilderfactory-external-general-entities-true-java.yml(1 hunks)rules/java/security/documentbuilderfactory-external-parameter-entities-true-java.yml(1 hunks)rules/java/security/drivermanager-hardcoded-secret-java.yml(1 hunks)tests/__snapshots__/documentbuilderfactory-external-general-entities-true-java-snapshot.yml(1 hunks)tests/__snapshots__/documentbuilderfactory-external-parameter-entities-true-java-snapshot.yml(1 hunks)tests/__snapshots__/drivermanager-hardcoded-secret-java-snapshot.yml(1 hunks)tests/java/documentbuilderfactory-external-general-entities-true-java-test.yml(1 hunks)tests/java/documentbuilderfactory-external-parameter-entities-true-java-test.yml(1 hunks)tests/java/drivermanager-hardcoded-secret-java-test.yml(1 hunks)
✅ Files skipped from review due to trivial changes (2)
- tests/snapshots/documentbuilderfactory-external-general-entities-true-java-snapshot.yml
- tests/snapshots/documentbuilderfactory-external-parameter-entities-true-java-snapshot.yml
🧰 Additional context used
🪛 yamllint (1.35.1)
rules/java/security/documentbuilderfactory-external-general-entities-true-java.yml
[warning] 15-15: wrong indentation: expected 4 but found 3
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rules/java/security/drivermanager-hardcoded-secret-java.yml
[warning] 16-16: wrong indentation: expected 4 but found 3
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🔇 Additional comments (5)
tests/java/documentbuilderfactory-external-parameter-entities-true-java-test.yml (1)
1-4: LGTM! Valid case correctly demonstrates secure configuration.
The test correctly validates that setting external parameter entities to false is the secure configuration.
tests/java/documentbuilderfactory-external-general-entities-true-java-test.yml (1)
1-5: LGTM! Comprehensive coverage of valid cases.
The test correctly validates secure configurations for both DocumentBuilderFactory and SAXParserFactory.
rules/java/security/documentbuilderfactory-external-parameter-entities-true-java.yml (1)
1-3: LGTM! Appropriate severity level for XXE vulnerability.
The warning severity is appropriate for this security issue, and the language specification is correct.
tests/__snapshots__/drivermanager-hardcoded-secret-java-snapshot.yml (1)
27-137: Improve snapshot organization and readability.
The snapshot file could benefit from:
- Grouping similar test cases together
- Adding descriptive comments for each test scenario
- Using consistent indentation for label blocks
Additionally, verify that all test cases are properly covered:
✅ Verification successful
Let me gather more information about the test cases and snapshots to properly verify the coverage.
Snapshot coverage and organization is complete but could be improved
The snapshot file contains all test cases from the test file, with proper coverage of both valid and invalid cases. However, the original review suggestions for improving organization remain valid:
- Test cases could be grouped by similar patterns (e.g., DriverManager cases together, DriverManagerDataSource cases together)
- Missing descriptive comments to explain each test scenario
- Inconsistent indentation in label blocks
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check if all test cases from the test file have corresponding snapshots
# Get test cases from the test file
echo "Checking test coverage..."
rg -U "invalid:(\n.*?){2,}" "tests/java/drivermanager-hardcoded-secret-java-test.yml" --multiline
# Compare with snapshots
echo "Checking corresponding snapshots..."
rg -U "snapshots:(\n.*?){2,}" "tests/__snapshots__/drivermanager-hardcoded-secret-java-snapshot.yml" --multiline
Length of output: 384
Script:
#!/bin/bash
# Get the full content of both files to compare test cases and snapshots
echo "Test file content:"
cat tests/java/drivermanager-hardcoded-secret-java-test.yml
echo -e "\nSnapshot file content:"
cat tests/__snapshots__/drivermanager-hardcoded-secret-java-snapshot.yml
Length of output: 4598
rules/java/security/drivermanager-hardcoded-secret-java.yml (1)
1-152: Verify rule coverage with test cases
Let's verify the rule's effectiveness against various scenarios:
✅ Verification successful
Rule implementation verified with comprehensive test coverage
The rule effectively detects hardcoded credentials in both DriverManager and DriverManagerDataSource implementations. Test cases cover all critical scenarios:
- Direct password in DriverManager.getConnection
- Variable-based password in DriverManager.getConnection
- DriverManagerDataSource with setPassword
- DriverManagerDataSource constructor with credentials
- Valid case without hardcoded credentials
The rule's patterns correctly match the security-critical paths while avoiding false positives, and the test cases validate both the positive and negative scenarios. The implementation aligns with the CWE-798 requirements for detecting hardcoded credentials.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check test coverage and potential false positives
# Find and analyze test files
echo "Analyzing test coverage..."
fd -e yml "drivermanager.*test" tests/java/
# Check for similar rules in other security tools
echo "Checking similar rules in other tools..."
rg -l "DriverManager.*getConnection|setPassword" rules/
Length of output: 373
Script:
#!/bin/bash
# Let's examine the test cases to verify rule coverage
echo "Analyzing test cases content..."
cat tests/java/drivermanager-hardcoded-secret-java-test.yml
echo -e "\nChecking for potential similar patterns..."
# Look for other potential patterns that might need coverage
rg "DriverManager|DataSource" -A 3 rules/java/security/
Length of output: 4688
🧰 Tools
🪛 yamllint (1.35.1)
[warning] 16-16: wrong indentation: expected 4 but found 3
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[warning] 18-18: wrong indentation: expected 5 but found 8
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[warning] 31-31: wrong indentation: expected 14 but found 17
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[error] 35-35: trailing spaces
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[warning] 39-39: wrong indentation: expected 6 but found 8
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[error] 78-78: trailing spaces
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[warning] 85-85: wrong indentation: expected 11 but found 12
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[warning] 95-95: wrong indentation: expected 4 but found 3
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[warning] 98-98: wrong indentation: expected 9 but found 8
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[warning] 101-101: wrong indentation: expected 10 but found 8
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[warning] 102-102: wrong indentation: expected 12 but found 11
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[warning] 106-106: wrong indentation: expected 12 but found 11
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[error] 117-117: trailing spaces
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[warning] 130-130: wrong indentation: expected 17 but found 16
(indentation)
[error] 151-151: trailing spaces
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[error] 152-152: trailing spaces
(trailing-spaces)
rules/java/security/documentbuilderfactory-external-parameter-entities-true-java.yml
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Summary by CodeRabbit
New Features
Tests
DocumentBuilderFactoryandDriverManagerregarding security best practices.