CVE-2018-8956

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p10:*:*:*:*:*:*", "matchCriteriaId": "0BC62D4E-D519-458C-BE4E-10DDB73A97D3", "vulnerable": true}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p11:*:*:*:*:*:*", "matchCriteriaId": "1C420117-862A-41A9-BAE8-8B3478FAEBC3", "vulnerable": true}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p12:*:*:*:*:*:*", "matchCriteriaId": "4A484251-3220-498C-83FE-A04B013A31A4", "vulnerable": true}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p13:*:*:*:*:*:*", "matchCriteriaId": "E0CE4157-852B-42ED-A77C-8A17B189432E", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "ntpd in ntp 4.2.8p10, 4.2.8p11, 4.2.8p12 and 4.2.8p13 allow remote attackers to prevent a broadcast client from synchronizing its clock with a broadcast NTP server via soofed mode 3 and mode 5 packets. The attacker must either be a part of the same broadcast network or control a slave in that broadcast network that can capture certain required packets on the attacker's behalf and send them to the attacker."}, {"lang": "es", "value": "ntpd en ntp versiones 4.2.8p10, 4.2.8p11, 4.2.8p12 y 4.2.8p13, permiten a atacantes remotos impedir que un cliente de multidifusi\u00f3n sincronice su reloj con un servidor NTP de multidifusi\u00f3n por medio de paquetes de modo 3 y modo 5 suplantados. El atacante debe ser parte de la misma red de multidifusi\u00f3n o controlar un esclavo en esa red de multidifusi\u00f3n que puede capturar determinados paquetes requeridos en nombre del atacante y enviarlos luego al atacante."}], "id": "CVE-2018-8956", "lastModified": "2026-06-17T02:05:43.317", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-05-06T19:15:12.410", "references": [{"source": "cve@mitre.org", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html"}, {"source": "cve@mitre.org", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://www.ntp.org/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://arxiv.org/abs/2005.01783"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://nikhiltripathi.in/NTP_attack.pdf"}, {"source": "cve@mitre.org", "url": "https://security.netapp.com/advisory/ntap-20200518-0006/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://tools.ietf.org/html/rfc5905"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://www.ntp.org/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://arxiv.org/abs/2005.01783"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://nikhiltripathi.in/NTP_attack.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20200518-0006/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://tools.ietf.org/html/rfc5905"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "ntp: ntpd allows remote attackers to prevent a broadcast client from synchronizing its clock", "id": "1848589", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1848589"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-20", "details": ["ntpd in ntp 4.2.8p10, 4.2.8p11, 4.2.8p12 and 4.2.8p13 allow remote attackers to prevent a broadcast client from synchronizing its clock with a broadcast NTP server via soofed mode 3 and mode 5 packets. The attacker must either be a part of the same broadcast network or control a slave in that broadcast network that can capture certain required packets on the attacker's behalf and send them to the attacker."], "name": "CVE-2018-8956", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "ntp", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "ntp", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "ntp", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2020-05-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-8956\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-8956\nhttps://arxiv.org/abs/2005.01783\nhttps://nikhiltripathi.in/NTP_attack.pdf\nhttps://security.netapp.com/advisory/ntap-20200518-0006/"], "statement": "As per the researcher this issue only affects NTP versions 4.2.8p10 through 4.2.8p13, which are not shipped with any Red Hat products, therefore they are not affected by this flaw.", "threat_severity": "Moderate"}

{}