| Package | Affected versions | Patched versions |
|---|---|---|
| symfony/http-foundation | ≥ 2.0.0, < 2.0.19≥ 2.1.0, < 2.1.4 | 2.0.192.1.4 |
| symfony/symfony | ≥ 2.0.0, < 2.0.19≥ 2.1.0, < 2.1.4 | 2.0.192.1.4 |
An application is vulnerable if it uses the client IP address as returned by the Request::getClientIp() method for sensitive decisions like IP based access control.
To fix this security issue, the following changes have been made to all versions of Symfony2:
A new Request::setTrustedProxies() method has been introduced and should be used intead of Request::trustProxyData() to enable the trust proxy mode. It takes an array of trusted proxy IP addresses as its argument:
// before (probably in your front controller script)
Request::trustProxyData();
// after
Request::setTrustedProxies(array('1.1.1.1'));
// 1.1.1.1 being the IP address of a trusted reverse proxy
The Request::trustProxyData() method has been deprecated (when used, it automatically trusts the latest proxy in the chain -- which is the current remote address):
Request::trustProxyData();
// is equivalent to
Request::setTrustedProxies(array($request->server->get('REMOTE_ADDR')));
We encourage all Symfony2 users to upgrade as soon as possible. It you don't want to upgrade to the latest version yet, you can also apply the following patches:
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