{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2020-12420",
        "ASSIGNER": "security@mozilla.org",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Mozilla",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Firefox ESR",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "68.10",
                                            "version_affected": "<"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Firefox",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "78",
                                            "version_affected": "<"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Thunderbird",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "68.10.0",
                                            "version_affected": "<"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Use-After-Free when trying to connect to a STUN server"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://www.mozilla.org/security/advisories/mfsa2020-24/",
                "refsource": "MISC",
                "name": "https://www.mozilla.org/security/advisories/mfsa2020-24/"
            },
            {
                "url": "https://www.mozilla.org/security/advisories/mfsa2020-26/",
                "refsource": "MISC",
                "name": "https://www.mozilla.org/security/advisories/mfsa2020-26/"
            },
            {
                "url": "https://www.mozilla.org/security/advisories/mfsa2020-25/",
                "refsource": "MISC",
                "name": "https://www.mozilla.org/security/advisories/mfsa2020-25/"
            },
            {
                "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1643437",
                "refsource": "MISC",
                "name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1643437"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2020:0967",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2020:0982",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2020:0983",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2020:1017",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html"
            },
            {
                "refsource": "UBUNTU",
                "name": "USN-4421-1",
                "url": "https://usn.ubuntu.com/4421-1/"
            },
            {
                "refsource": "GENTOO",
                "name": "GLSA-202007-09",
                "url": "https://security.gentoo.org/glsa/202007-09"
            },
            {
                "refsource": "GENTOO",
                "name": "GLSA-202007-10",
                "url": "https://security.gentoo.org/glsa/202007-10"
            }
        ]
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "When trying to connect to a STUN server, a race condition could have caused a use-after-free of a pointer, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0."
            }
        ]
    }
}