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Improper authorization control for web services In symfony/security

Description

Symfony Allows URI Restrictions Bypass Via Double-Encoded String On the Symfony 2.0.x version, there's a security issue that allows access to routes protected by a firewall even when the user is not logged in.

Both the Routing component and the Security component uses the path returned by getPathInfo() to match a Request. The getPathInfo() returns a decoded path, but the Routing component (Symfony\Component\Routing\Matcher\UrlMatcher) decodes the path a second time; whereas the Security component, Symfony\Component\HttpFoundation\RequestMatcher, does not.

This difference causes Symfony 2.0 to be vulnerable to double encoding attacks.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem
Package
Affected version
Patched versions

Aliases

1. CVE-2012-64312. NVD-2012-64313. OSV-2012-64314. GCVE-2012-6431

References

1. https://github.com/symfony/symfony/commit/55014a6841bec50046e8329a4835c160ac31a4962. https://github.com/symfony/symfony/commit/8b2c17f80377582287a78e0b521497e039dd6b0d3. https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-foundation/CVE-2012-6431.yaml4. https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/routing/CVE-2012-6431.yaml5. https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2012-6431.yaml6. https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2012-6431.yaml7. https://symfony.com/blog/security-release-symfony-2-0-20-and-2-1-5-released8. http://symfony.com/blog/security-release-symfony-2-0-20-and-2-1-5-released

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