{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2016-8858", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2024-08-06T02:35:01.046Z", "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"]}]}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openbsd:openssh:6.8:*:*:*:*:*:*:*", "matchCriteriaId": "65A8629A-CFAE-4403-BEE7-622912483702", "vulnerable": true}, {"criteria": "cpe:2.3:a:openbsd:openssh:6.9:*:*:*:*:*:*:*", "matchCriteriaId": "D0607649-62FE-41CB-9444-53CD9C5B67C0", "vulnerable": true}, {"criteria": "cpe:2.3:a:openbsd:openssh:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "0B0FB8D5-75CB-4691-AB9F-B4FA46973421", "vulnerable": true}, {"criteria": "cpe:2.3:a:openbsd:openssh:7.1:*:*:*:*:*:*:*", "matchCriteriaId": "67E1B240-BD86-41D3-BAC1-96005CB31DEE", "vulnerable": true}, {"criteria": "cpe:2.3:a:openbsd:openssh:7.2:*:*:*:*:*:*:*", "matchCriteriaId": "2FC2BA97-6E7A-4AEF-8944-DB3AB8E14762", "vulnerable": true}, {"criteria": "cpe:2.3:a:openbsd:openssh:7.3:*:*:*:*:*:*:*", "matchCriteriaId": "F5D3A31E-D785-406D-A8C8-FD122F4C9E38", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [{"sourceIdentifier": "cve@mitre.org", "tags": ["disputed"]}], "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.\""}, {"lang": "es", "value": "** DISPUTADA ** La funci\u00f3n kex_input_kexinit en kex.c en OpenSSH 6.x y 7.x hasta la versi\u00f3n 7.3 permite a atacantes remotos provocar una denegaci\u00f3n de servicio (consumo de memoria) enviando muchas peticiones duplicadas KEXINIT. NOTA: un tercero reporta que \"OpenSSH upstream no considera esto como un problema de seguridad\"."}], "id": "CVE-2016-8858", "lastModified": "2026-05-06T22:30:45.220", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.8, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2016-12-09T11:59:00.207", "references": [{"source": "cve@mitre.org", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126&r2=1.127&f=h"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c?rev=1.127&content-type=text/x-cvsweb-markup"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/10/19/3"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/10/20/1"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB 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{"acknowledgement": "Red Hat would like to thank Shi Lei (Qihoo 360) for reporting this issue.", "bugzilla": {"description": "openssh: Memory exhaustion due to unregistered KEXINIT handler after receiving message", "id": "1384860", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1384860"}, "csaw": false, "cvss": {"cvss_base_score": "5.0", "cvss_scoring_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "status": "draft"}, "cvss3": {"cvss3_base_score": "5.8", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L", "status": "draft"}, "details": ["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.\""], "name": "CVE-2016-8858", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2016-10-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-8858\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-8858"], "statement": "The Red Hat Product Security Team does not consider this issue to be a security flaw, for more information please refer to https://bugzilla.redhat.com/show_bug.cgi?id=1384860#c5", "threat_severity": "Moderate"}

{}