{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2018-20852",
        "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": "http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py in Python before 3.7.3 does not correctly validate the domain: it can be tricked into sending existing cookies to the wrong server. An attacker may abuse this flaw by using a server with a hostname that has another valid hostname as a suffix (e.g., pythonicexample.com to steal cookies for example.com). When a program uses http.cookiejar.DefaultPolicy and tries to do an HTTP connection to an attacker-controlled server, existing cookies can be leaked to the attacker. This affects 2.x through 2.7.16, 3.x before 3.4.10, 3.5.x before 3.5.7, 3.6.x before 3.6.9, and 3.7.x before 3.7.3."
            }
        ]
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    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://bugs.python.org/issue35121",
                "refsource": "MISC",
                "name": "https://bugs.python.org/issue35121"
            },
            {
                "url": "https://python-security.readthedocs.io/vuln/cookie-domain-check.html",
                "refsource": "MISC",
                "name": "https://python-security.readthedocs.io/vuln/cookie-domain-check.html"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20190817 [SECURITY] [DLA 1889-1] python3.4 security update",
                "url": "https://lists.debian.org/debian-lts-announce/2019/08/msg00022.html"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2019:1988",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00071.html"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2019:1989",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00074.html"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20190831 [SECURITY] [DLA 1906-1] python2.7 security update",
                "url": "https://lists.debian.org/debian-lts-announce/2019/08/msg00040.html"
            },
            {
                "refsource": "UBUNTU",
                "name": "USN-4127-2",
                "url": "https://usn.ubuntu.com/4127-2/"
            },
            {
                "refsource": "UBUNTU",
                "name": "USN-4127-1",
                "url": "https://usn.ubuntu.com/4127-1/"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:3725",
                "url": "https://access.redhat.com/errata/RHSA-2019:3725"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2019-0d3fcae639",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K7HNVIFMETMFWWWUNTB72KYJYXCZOS5V/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2019-74ba24605e",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZBTGPBUABGXZ7WH7677OEM3NSP6ZEA76/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2019-758824a3ff",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/COATURTCY7G67AYI6UDV5B2JZTBCKIDX/"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:3948",
                "url": "https://access.redhat.com/errata/RHSA-2019:3948"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2020:0086",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html"
            },
            {
                "refsource": "GENTOO",
                "name": "GLSA-202003-26",
                "url": "https://security.gentoo.org/glsa/202003-26"
            },
            {
                "url": "https://www.oracle.com/security-alerts/cpuapr2020.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/security-alerts/cpuapr2020.html"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20200715 [SECURITY] [DLA 2280-1] python3.5 security update",
                "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20200822 [SECURITY] [DLA 2337-1] python2.7 security update",
                "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html"
            }
        ]
    }
}