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Use Origin header before Referer to check CSRF

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OWASP에서는 Referer 헤더보다 Origin 헤더를 먼저 체크하는 것을 권장합니다.
Referer가 비어 있는 경우에도 Origin 헤더에는 유용한 정보가 들어 있을 수 있기 때문입니다.

https://cheatsheetseries.owasp.org/cheatsheets/Cross-Site_Request_Forgery_Prevention_Cheat_Sheet.html
This commit is contained in:
Kijin Sung 2021-02-23 16:51:46 +09:00
parent 6a568e8e79
commit e423cba24d
2 changed files with 16 additions and 2 deletions
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11
tests/unit/framework/SecurityTest.php
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@ -138,6 +138,17 @@ class SecurityTest extends \Codeception\TestCase\Test
$_SERVER['HTTP_X_CSRF_TOKEN'] = 'invalid value';
$this->assertFalse(Rhymix\Framework\Security::checkCSRF());
$_SERVER['HTTP_ORIGIN'] = 'http://www.rhymix.org';
$_SERVER['HTTP_REFERER'] = 'http://www.foobar.com';
$_SERVER['HTTP_X_CSRF_TOKEN'] = '';
$this->assertTrue(Rhymix\Framework\Security::checkCSRF());
$_SERVER['HTTP_REFERER'] = '';
$this->assertTrue(Rhymix\Framework\Security::checkCSRF());
$_SERVER['HTTP_ORIGIN'] = 'http://www.foobar.com';
$this->assertFalse(Rhymix\Framework\Security::checkCSRF());
$_SERVER['HTTP_ORIGIN'] = 'null';
$this->assertFalse(Rhymix\Framework\Security::checkCSRF());
$_SERVER['HTTP_REFERER'] = '';
$_SERVER['HTTP_X_CSRF_TOKEN'] = '';
$this->assertTrue(Rhymix\Framework\Security::checkCSRF('http://www.rhymix.org/'));