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https://github.com/PHPOffice/PhpSpreadsheet.git
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oleibman
df3c6d9122
Fix #3807. Function attempts to rationalize `..` in filenames in a way that normally works just fine. Reporter notes that at least one of the filenames that will be analyzed when a spreadsheet is read can be maliciously altered in a manner which does not harm Excel when reading the file, but which puts PhpSpreadsheet into a loop. This PR fixes the problem.
37 lines
1.1 KiB
PHP
37 lines
1.1 KiB
PHP
<?php
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declare(strict_types=1);
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namespace PhpOffice\PhpSpreadsheetTests\Reader\Xlsx;
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use PhpOffice\PhpSpreadsheet\Reader\Xlsx;
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class Issue3807Test extends \PHPUnit\Framework\TestCase
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{
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private static string $testbook = 'tests/data/Reader/XLSX/issue.3807.xlsx';
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public function testPreliminaries(): void
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{
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$file = 'zip://';
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$file .= self::$testbook;
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$file .= '#xl/_rels/workbook.xml.rels';
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$data = file_get_contents($file);
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// rels file points to non-existent theme file
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if ($data === false) {
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self::fail('Unable to read file');
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} else {
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self::assertStringContainsString('Target="theme/theme1.xml/../../../../../../../../1.txt"', $data);
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}
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}
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public function testLoadable(): void
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{
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$reader = new Xlsx();
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$spreadsheet = $reader->load(self::$testbook);
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$sheet = $spreadsheet->getActiveSheet();
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// Assert anything to confirm read succeeded
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self::assertSame(1, $sheet->getCell('B1')->getValue());
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$spreadsheet->disconnectWorksheets();
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}
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}
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