diff --git a/src/Symfony/Component/HttpFoundation/IpUtils.php b/src/Symfony/Component/HttpFoundation/IpUtils.php
index 68e9421d94..fb906b6812 100644
--- a/src/Symfony/Component/HttpFoundation/IpUtils.php
+++ b/src/Symfony/Component/HttpFoundation/IpUtils.php
@@ -62,6 +62,10 @@ class IpUtils
     public static function checkIp4($requestIp, $ip)
     {
         if (false !== strpos($ip, '/')) {
+            if ('0.0.0.0/0' === $ip) {
+                return true;
+            }
+
             list($address, $netmask) = explode('/', $ip, 2);
 
             if ($netmask < 1 || $netmask > 32) {
diff --git a/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php b/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php
index 726ba6a347..0002478246 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php
@@ -34,6 +34,9 @@ class IpUtilsTest extends \PHPUnit_Framework_TestCase
             array(true, '192.168.1.1', array('1.2.3.4/1', '192.168.1.0/24')),
             array(true, '192.168.1.1', array('192.168.1.0/24', '1.2.3.4/1')),
             array(false, '192.168.1.1', array('1.2.3.4/1', '4.3.2.1/1')),
+            array(true, '1.2.3.4', '0.0.0.0/0'),
+            array(false, '1.2.3.4', '256.256.256/0'),
+            array(false, '1.2.3.4', '192.168.1.0/0'),
         );
     }