{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "state": "PUBLISHED",
        "cveId": "CVE-2016-8858",
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "dateUpdated": "2026-05-29T20:45:20.720Z",
        "dateReserved": "2016-10-19T00:00:00.000Z",
        "datePublished": "2016-12-09T00:00:00.000Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
                "shortName": "mitre",
                "dateUpdated": "2022-12-13T00:00:00.000Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests.  NOTE: a third party reports that \"OpenSSH upstream does not consider this as a security issue.\""
                }
            ],
            "tags": [
                "disputed"
            ],
            "affected": [
                {
                    "vendor": "n/a",
                    "product": "n/a",
                    "versions": [
                        {
                            "version": "n/a",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "name": "93776",
                    "tags": [
                        "vdb-entry"
                    ],
                    "url": "http://www.securityfocus.com/bid/93776"
                },
                {
                    "name": "[oss-security] 20161020 Re: Re: CVE Request: OpenSSH: Memory exhaustion issue found in OpenSSH",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "http://www.openwall.com/lists/oss-security/2016/10/20/1"
                },
                {
                    "url": "https://security.netapp.com/advisory/ntap-20180201-0001/"
                },
                {
                    "name": "[oss-security] 20161019 CVE Request: OpenSSH: Memory exhaustion issue found in OpenSSH",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "http://www.openwall.com/lists/oss-security/2016/10/19/3"
                },
                {
                    "url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126&r2=1.127&f=h"
                },
                {
                    "url": "https://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89ad"
                },
                {
                    "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sig"
                },
                {
                    "name": "FreeBSD-SA-16:33",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:33.openssh.asc"
                },
                {
                    "name": "1037057",
                    "tags": [
                        "vdb-entry"
                    ],
                    "url": "http://www.securitytracker.com/id/1037057"
                },
                {
                    "name": "GLSA-201612-18",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://security.gentoo.org/glsa/201612-18"
                },
                {
                    "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1384860"
                },
                {
                    "url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c?rev=1.127&content-type=text/x-cvsweb-markup"
                },
                {
                    "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "text",
                            "lang": "en",
                            "description": "n/a"
                        }
                    ]
                }
            ],
            "datePublic": "2016-10-10T00:00:00.000Z"
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-06T02:35:01.046Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "name": "93776",
                        "tags": [
                            "vdb-entry",
                            "x_transferred"
                        ],
                        "url": "http://www.securityfocus.com/bid/93776"
                    },
                    {
                        "name": "[oss-security] 20161020 Re: Re: CVE Request: OpenSSH: Memory exhaustion issue found in OpenSSH",
                        "tags": [
                            "mailing-list",
                            "x_transferred"
                        ],
                        "url": "http://www.openwall.com/lists/oss-security/2016/10/20/1"
                    },
                    {
                        "url": "https://security.netapp.com/advisory/ntap-20180201-0001/",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "name": "[oss-security] 20161019 CVE Request: OpenSSH: Memory exhaustion issue found in OpenSSH",
                        "tags": [
                            "mailing-list",
                            "x_transferred"
                        ],
                        "url": "http://www.openwall.com/lists/oss-security/2016/10/19/3"
                    },
                    {
                        "url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126&r2=1.127&f=h",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89ad",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sig",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "name": "FreeBSD-SA-16:33",
                        "tags": [
                            "vendor-advisory",
                            "x_transferred"
                        ],
                        "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:33.openssh.asc"
                    },
                    {
                        "name": "1037057",
                        "tags": [
                            "vdb-entry",
                            "x_transferred"
                        ],
                        "url": "http://www.securitytracker.com/id/1037057"
                    },
                    {
                        "name": "GLSA-201612-18",
                        "tags": [
                            "vendor-advisory",
                            "x_transferred"
                        ],
                        "url": "https://security.gentoo.org/glsa/201612-18"
                    },
                    {
                        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1384860",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c?rev=1.127&content-type=text/x-cvsweb-markup",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            },
            {
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-400",
                                "lang": "en",
                                "description": "CWE-400 Uncontrolled Resource Consumption"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 7.5,
                            "attackVector": "NETWORK",
                            "baseSeverity": "HIGH",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "NONE"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-04-15T16:36:39.938823Z",
                                "id": "CVE-2016-8858",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-05-29T20:45:20.720Z"
                }
            }
        ]
    }
}