{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2021-23973",
        "ASSIGNER": "security@mozilla.org",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Mozilla",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Firefox",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 86"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Thunderbird",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 78.8"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Firefox ESR",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 78.8"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "MediaError message property could have leaked information about cross-origin resources"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://www.mozilla.org/security/advisories/mfsa2021-07/",
                "refsource": "MISC",
                "name": "https://www.mozilla.org/security/advisories/mfsa2021-07/"
            },
            {
                "url": "https://www.mozilla.org/security/advisories/mfsa2021-09/",
                "refsource": "MISC",
                "name": "https://www.mozilla.org/security/advisories/mfsa2021-09/"
            },
            {
                "url": "https://www.mozilla.org/security/advisories/mfsa2021-08/",
                "refsource": "MISC",
                "name": "https://www.mozilla.org/security/advisories/mfsa2021-08/"
            },
            {
                "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1690976",
                "refsource": "MISC",
                "name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1690976"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20210301 [SECURITY] [DLA 2578-1] thunderbird security update",
                "url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-4866",
                "url": "https://www.debian.org/security/2021/dsa-4866"
            },
            {
                "refsource": "GENTOO",
                "name": "GLSA-202104-10",
                "url": "https://security.gentoo.org/glsa/202104-10"
            },
            {
                "refsource": "GENTOO",
                "name": "GLSA-202104-09",
                "url": "https://security.gentoo.org/glsa/202104-09"
            }
        ]
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8."
            }
        ]
    }
}