{
    "CVE_data_meta": {
        "AKA": "HTTP/2 Settings Flood",
        "ASSIGNER": "cert@cert.org",
        "ID": "CVE-2019-9515",
        "STATE": "PUBLIC",
        "TITLE": "Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "Thanks to Jonathan Looney of Netflix for reporting this vulnerability."
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both."
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.0.7"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-400 Uncontrolled Resource Consumption"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "VU#605641",
                "refsource": "CERT-VN",
                "url": "https://kb.cert.org/vuls/id/605641/"
            },
            {
                "name": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md",
                "refsource": "MISC",
                "url": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md"
            },
            {
                "refsource": "MLIST",
                "name": "[trafficserver-dev] 20190813 Apache Traffic Server is vulnerable to various HTTP/2 attacks",
                "url": "https://lists.apache.org/thread.html/bde52309316ae798186d783a5e29f4ad1527f61c9219a289d0eee0a7@%3Cdev.trafficserver.apache.org%3E"
            },
            {
                "refsource": "MLIST",
                "name": "[trafficserver-users] 20190813 Apache Traffic Server is vulnerable to various HTTP/2 attacks",
                "url": "https://lists.apache.org/thread.html/392108390cef48af647a2e47b7fd5380e050e35ae8d1aa2030254c04@%3Cusers.trafficserver.apache.org%3E"
            },
            {
                "refsource": "MLIST",
                "name": "[trafficserver-announce] 20190813 Apache Traffic Server is vulnerable to various HTTP/2 attacks",
                "url": "https://lists.apache.org/thread.html/ad3d01e767199c1aed8033bb6b3f5bf98c011c7c536f07a5d34b3c19@%3Cannounce.trafficserver.apache.org%3E"
            },
            {
                "refsource": "BUGTRAQ",
                "name": "20190814 APPLE-SA-2019-08-13-5 SwiftNIO HTTP/2 1.5.0",
                "url": "https://seclists.org/bugtraq/2019/Aug/24"
            },
            {
                "refsource": "FULLDISC",
                "name": "20190816 APPLE-SA-2019-08-13-5 SwiftNIO HTTP/2 1.5.0",
                "url": "http://seclists.org/fulldisclosure/2019/Aug/16"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://www.synology.com/security/advisory/Synology_SA_19_33",
                "url": "https://www.synology.com/security/advisory/Synology_SA_19_33"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://support.f5.com/csp/article/K50233772",
                "url": "https://support.f5.com/csp/article/K50233772"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20190823-0005/",
                "url": "https://security.netapp.com/advisory/ntap-20190823-0005/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2019-5a6a7bc12c",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2019-6a2980de56",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/"
            },
            {
                "refsource": "BUGTRAQ",
                "name": "20190825 [SECURITY] [DSA 4508-1] h2o security update",
                "url": "https://seclists.org/bugtraq/2019/Aug/43"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-4508",
                "url": "https://www.debian.org/security/2019/dsa-4508"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-4520",
                "url": "https://www.debian.org/security/2019/dsa-4520"
            },
            {
                "refsource": "BUGTRAQ",
                "name": "20190910 [SECURITY] [DSA 4520-1] trafficserver security update",
                "url": "https://seclists.org/bugtraq/2019/Sep/18"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2019:2114",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2019:2115",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://kc.mcafee.com/corporate/index?page=content&id=SB10296",
                "url": "https://kc.mcafee.com/corporate/index?page=content&id=SB10296"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:2766",
                "url": "https://access.redhat.com/errata/RHSA-2019:2766"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:2796",
                "url": "https://access.redhat.com/errata/RHSA-2019:2796"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:2861",
                "url": "https://access.redhat.com/errata/RHSA-2019:2861"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:2925",
                "url": "https://access.redhat.com/errata/RHSA-2019:2925"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:2939",
                "url": "https://access.redhat.com/errata/RHSA-2019:2939"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:2955",
                "url": "https://access.redhat.com/errata/RHSA-2019:2955"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://support.f5.com/csp/article/K50233772?utm_source=f5support&utm_medium=RSS",
                "url": "https://support.f5.com/csp/article/K50233772?utm_source=f5support&utm_medium=RSS"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:3892",
                "url": "https://access.redhat.com/errata/RHSA-2019:3892"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:4018",
                "url": "https://access.redhat.com/errata/RHSA-2019:4018"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:4019",
                "url": "https://access.redhat.com/errata/RHSA-2019:4019"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:4021",
                "url": "https://access.redhat.com/errata/RHSA-2019:4021"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:4020",
                "url": "https://access.redhat.com/errata/RHSA-2019:4020"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:4045",
                "url": "https://access.redhat.com/errata/RHSA-2019:4045"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:4042",
                "url": "https://access.redhat.com/errata/RHSA-2019:4042"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:4040",
                "url": "https://access.redhat.com/errata/RHSA-2019:4040"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:4041",
                "url": "https://access.redhat.com/errata/RHSA-2019:4041"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:4352",
                "url": "https://access.redhat.com/errata/RHSA-2019:4352"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2020:0727",
                "url": "https://access.redhat.com/errata/RHSA-2020:0727"
            },
            {
                "refsource": "UBUNTU",
                "name": "USN-4308-1",
                "url": "https://usn.ubuntu.com/4308-1/"
            }
        ]
    },
    "source": {
        "discovery": "UNKNOWN"
    }
}