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40 lines
1.0 KiB
PHP
40 lines
1.0 KiB
PHP
--TEST--
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Testing null byte injection in imagepng
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--CLEAN--
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$tempdir = sys_get_temp_dir(). '/php-gdtest';
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foreach (glob($tempdir . "/test*") as $file ) { unlink($file); }
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rmdir($tempdir);
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--SKIPIF--
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<?php
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if(!extension_loaded('gd')){ die('skip gd extension not available'); }
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$support = gd_info();
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if (!isset($support['PNG Support']) || $support['PNG Support'] === false) {
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print 'skip png support not available';
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}
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?>
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--FILE--
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<?php
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$image = imagecreate(1,1);// 1px image
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$tempdir = sys_get_temp_dir(). '/php-gdtest';
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if (!file_exists($tempdir) && !is_dir($tempdir)) {
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mkdir ($tempdir, 0777, true);
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}
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$userinput = "1\0"; // from post or get data
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$temp = $tempdir. "/test" . $userinput .".tmp";
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echo "\nimagepng TEST\n";
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imagepng($image, $temp);
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var_dump(file_exists($tempdir. "/test1"));
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var_dump(file_exists($tempdir. "/test1.tmp"));
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foreach (glob($tempdir . "/test*") as $file ) { unlink($file); }
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--EXPECTF--
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imagepng TEST
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Warning: imagepng(): Invalid 2nd parameter, filename must not contain null bytes in %s on line %d
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bool(false)
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bool(false)
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