{
    "CVE_data_meta": {
        "ASSIGNER": "openssl-security@openssl.org",
        "DATE_PUBLIC": "2019-09-10",
        "ID": "CVE-2019-1549",
        "STATE": "PUBLIC",
        "TITLE": "Fork Protection"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "OpenSSL",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "OpenSSL"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "Matt Caswell"
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)."
            }
        ]
    },
    "impact": [
        {
            "lang": "eng",
            "url": "https://www.openssl.org/policies/secpolicy.html#Low",
            "value": "Low"
        }
    ],
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Random Number Generation"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2019-d15aac6c4e",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2019-d51641f152",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/"
            },
            {
                "refsource": "BUGTRAQ",
                "name": "20191001 [SECURITY] [DSA 4539-1] openssl security update",
                "url": "https://seclists.org/bugtraq/2019/Oct/1"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-4539",
                "url": "https://www.debian.org/security/2019/dsa-4539"
            },
            {
                "refsource": "UBUNTU",
                "name": "USN-4376-1",
                "url": "https://usn.ubuntu.com/4376-1/"
            },
            {
                "url": "https://www.oracle.com/security-alerts/cpuapr2020.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/security-alerts/cpuapr2020.html"
            },
            {
                "url": "https://www.oracle.com/security-alerts/cpujul2020.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/security-alerts/cpujul2020.html"
            },
            {
                "url": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"
            },
            {
                "url": "https://www.oracle.com/security-alerts/cpujan2020.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/security-alerts/cpujan2020.html"
            },
            {
                "name": "https://www.openssl.org/news/secadv/20190910.txt",
                "refsource": "CONFIRM",
                "url": "https://www.openssl.org/news/secadv/20190910.txt"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20190919-0002/",
                "url": "https://security.netapp.com/advisory/ntap-20190919-0002/"
            },
            {
                "name": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be",
                "refsource": "CONFIRM",
                "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://support.f5.com/csp/article/K44070243",
                "url": "https://support.f5.com/csp/article/K44070243"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://support.f5.com/csp/article/K44070243?utm_source=f5support&utm_medium=RSS",
                "url": "https://support.f5.com/csp/article/K44070243?utm_source=f5support&utm_medium=RSS"
            },
            {
                "url": "https://www.oracle.com/security-alerts/cpuoct2020.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/security-alerts/cpuoct2020.html"
            }
        ]
    }
}