Files
opensourcepos/tests/Events/Load_configTest.php
T
jekkos 47aade5024 fix(locale): validate language_code against known locales to block path traversal (#4704)
* fix(locale): validate language_code against known locales to block path traversal

postSaveLocale() stored language_code from user input with no allow-list validation, and it later flows into Language::setLocale()/load() where the locale segment is require()'d. An authenticated config-grant account could store a relative path (e.g. ../../public/uploads) and, combined with a planted file in public/uploads/, achieve unauthenticated RCE on the next request.

Validate the submitted language against array_keys(get_languages()) before storing, and harden languageExists() to reject path separators and dot-dot sequences. Adds regression tests.

* test(locale): give locale fixture valid reference-code min/max defaults

* fix(locale): reject null bytes in languageExists guard

A stored language_code containing a NUL byte passes the existing path-separator and parent-dir checks, then reaches file_exists(). On PHP 8.5+ file_exists() throws a ValueError for NUL-byte paths, which breaks configuration loading. Reject NUL bytes in the guard and add regression tests.
2026-09-21 17:36:50 +02:00

50 lines
1.3 KiB
PHP

<?php
namespace Tests\Events;
use App\Events\Load_config;
use CodeIgniter\Test\CIUnitTestCase;
use ReflectionMethod;
class Load_configTest extends CIUnitTestCase
{
private function languageExists(string $languageCode): bool
{
$instance = new Load_config();
$method = new ReflectionMethod(Load_config::class, 'languageExists');
$method->setAccessible(true);
return (bool) $method->invoke($instance, $languageCode);
}
public function testLanguageExistsAcceptsValidCode(): void
{
$this->assertTrue($this->languageExists('en'));
}
public function testLanguageExistsRejectsNullByte(): void
{
$this->assertFalse($this->languageExists("en\0"));
}
public function testLanguageExistsRejectsNullByteOnly(): void
{
$this->assertFalse($this->languageExists("\0"));
}
public function testLanguageExistsRejectsForwardSlashPath(): void
{
$this->assertFalse($this->languageExists('en/../../etc/passwd'));
}
public function testLanguageExistsRejectsBackslashPath(): void
{
$this->assertFalse($this->languageExists('..\..\etc\passwd'));
}
public function testLanguageExistsRejectsParentDir(): void
{
$this->assertFalse($this->languageExists('..'));
}
}