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* Fix SQL injection in suggestions column configuration The suggestions_first_column, suggestions_second_column, and suggestions_third_column configuration values were concatenated directly into SQL SELECT statements without validation, allowing SQL injection attacks through the item search suggestions. Changes: - Add whitelist validation in Config controller to only allow valid column names (name, item_number, description, cost_price, unit_price) - Add defensive validation in Item model's get_search_suggestion_format() and get_search_suggestion_label() methods - Default invalid values to 'name' column for safety - Add unit tests to verify malicious inputs are rejected This is a critical security fix as attackers with config permissions could inject arbitrary SQL through these configuration fields. Vulnerability reported as additional injection point in bug report. * Refactor: Move allowed suggestions columns to Item model constants Extract the list of valid suggestion columns into two constants in the Item model for better cohesion: - ALLOWED_SUGGESTIONS_COLUMNS: valid column names - ALLOWED_SUGGESTIONS_COLUMNS_WITH_EMPTY: includes empty string for config validation This consolidates the validation logic in one place and makes it reusable across Config controller and Item model. * Address PR review comments: improve validation and code quality Changes: - Use camelCase naming for validateSuggestionsColumn() method (PSR-12) - Add field-aware validation with different fallbacks for first vs other columns - Handle non-string POST input by checking is_string() before validation - Refactor duplicate validation logic into suggestionColumnIsAllowed() helper - Use consistent camelCase variable names ($suggestionsFirstColumn) - Update tests to validate constants and behavior rather than implementation - Tests now focus on security properties of the allowlist itself The validation now properly handles: - First column: defaults to 'name' when invalid - Second/Third columns: defaults to '' (empty) when invalid - Non-string inputs: treated as invalid with appropriate fallback --------- Co-authored-by: Ollama <ollama@steganos.dev>
58 lines
2.1 KiB
PHP
58 lines
2.1 KiB
PHP
<?php
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namespace Tests\Models;
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use CodeIgniter\Test\CIUnitTestCase;
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use App\Models\Item;
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class Item_test extends CIUnitTestCase
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{
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public function testSuggestionsColumnValidationRejectsSQLInjection(): void
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{
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// These malicious values should not be in the allowed columns list
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$malicious_columns = [
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'name, SLEEP(5)',
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'name; DROP TABLE items',
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"name' OR '1'='1",
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'name UNION SELECT * FROM users',
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'name--comment'
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];
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foreach ($malicious_columns as $malicious) {
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$this->assertNotContains($malicious, Item::ALLOWED_SUGGESTIONS_COLUMNS,
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"Malicious input should not be in allowed columns: $malicious");
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}
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}
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public function testSuggestionsColumnValidationAcceptsValidColumns(): void
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{
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// Valid columns should be preserved
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$valid_columns = ['name', 'item_number', 'description', 'cost_price', 'unit_price'];
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foreach ($valid_columns as $column) {
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$this->assertContains($column, Item::ALLOWED_SUGGESTIONS_COLUMNS,
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"Valid column should be in allowed list: $column");
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}
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}
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public function testSuggestionsColumnValidationHandlesEmptyString(): void
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{
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// Empty string should only be allowed for second and third columns
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$this->assertContains('', Item::ALLOWED_SUGGESTIONS_COLUMNS_WITH_EMPTY,
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'Empty string should be allowed for optional columns');
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}
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public function testSuggestionsColumnValidationConstantsAreConsistent(): void
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{
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// Ensure the constants are properly defined
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$this->assertCount(5, Item::ALLOWED_SUGGESTIONS_COLUMNS,
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'Should have exactly 5 allowed columns');
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$this->assertCount(6, Item::ALLOWED_SUGGESTIONS_COLUMNS_WITH_EMPTY,
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'Should have exactly 6 allowed columns including empty');
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// Ensure empty string is only in WITH_EMPTY variant
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$this->assertNotContains('', Item::ALLOWED_SUGGESTIONS_COLUMNS,
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'Empty string should not be in required columns list');
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}
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}
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