{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2021-30858",
        "ASSIGNER": "product-security@apple.com",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Apple",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "macOS",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_value": "11.6"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "iOS",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_value": "14.8"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited."
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "url": "https://support.apple.com/en-us/HT212804",
                "name": "https://support.apple.com/en-us/HT212804"
            },
            {
                "refsource": "MISC",
                "url": "https://support.apple.com/en-us/HT212807",
                "name": "https://support.apple.com/en-us/HT212807"
            },
            {
                "refsource": "FULLDISC",
                "name": "20210917 APPLE-SA-2021-09-13-3 macOS Big Sur 11.6",
                "url": "http://seclists.org/fulldisclosure/2021/Sep/27"
            },
            {
                "refsource": "FULLDISC",
                "name": "20210917 APPLE-SA-2021-09-13-1 iOS 14.8 and iPadOS 14.8",
                "url": "http://seclists.org/fulldisclosure/2021/Sep/25"
            },
            {
                "refsource": "FULLDISC",
                "name": "20210917 APPLE-SA-2021-09-13-5 Safari 14.1.2",
                "url": "http://seclists.org/fulldisclosure/2021/Sep/29"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20210920 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0005",
                "url": "http://www.openwall.com/lists/oss-security/2021/09/20/1"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2021-c00e45b6c0",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BO6DMTHZR57JDBOXPSNR2MKDMCRWV265/"
            },
            {
                "refsource": "FULLDISC",
                "name": "20210921 APPLE-SA-2021-09-20-6 Additional information for APPLE-SA-2021-09-13-1 iOS 14.8 and iPadOS 14.8",
                "url": "http://seclists.org/fulldisclosure/2021/Sep/38"
            },
            {
                "refsource": "FULLDISC",
                "name": "20210921 APPLE-SA-2021-09-20-7 Additional information for APPLE-SA-2021-09-13-3 macOS Big Sur 11.6",
                "url": "http://seclists.org/fulldisclosure/2021/Sep/39"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-4975",
                "url": "https://www.debian.org/security/2021/dsa-4975"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-4976",
                "url": "https://www.debian.org/security/2021/dsa-4976"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://support.apple.com/kb/HT212824",
                "url": "https://support.apple.com/kb/HT212824"
            },
            {
                "refsource": "FULLDISC",
                "name": "20210924 APPLE-SA-2021-09-23-1 iOS 12.5.5",
                "url": "http://seclists.org/fulldisclosure/2021/Sep/50"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2021-edf6957b7d",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XYNV7ASK4LQVAUMJXNXBS3Z7RVDQ2N3W/"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20211026 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006",
                "url": "http://www.openwall.com/lists/oss-security/2021/10/26/9"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006",
                "url": "http://www.openwall.com/lists/oss-security/2021/10/27/1"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006",
                "url": "http://www.openwall.com/lists/oss-security/2021/10/27/2"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006",
                "url": "http://www.openwall.com/lists/oss-security/2021/10/27/4"
            }
        ]
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited."
            }
        ]
    }
}