{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2016-4423",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "The attemptAuthentication function in Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php in Symfony before 2.3.41, 2.7.x before 2.7.13, 2.8.x before 2.8.6, and 3.0.x before 3.0.6 does not limit the length of a username stored in a session, which allows remote attackers to cause a denial of service (session storage consumption) via a series of authentication attempts with long, non-existent usernames."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
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        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://symfony.com/blog/cve-2016-4423-large-username-storage-in-session",
                "refsource": "CONFIRM",
                "url": "https://symfony.com/blog/cve-2016-4423-large-username-storage-in-session"
            },
            {
                "name": "https://github.com/symfony/symfony/pull/18733",
                "refsource": "CONFIRM",
                "url": "https://github.com/symfony/symfony/pull/18733"
            },
            {
                "name": "DSA-3588",
                "refsource": "DEBIAN",
                "url": "http://www.debian.org/security/2016/dsa-3588"
            }
        ]
    }
}