CVE-2018-16866
Estado: ModificadaBaja (3.3)—
An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon ':'. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Puntuación base: 3.3
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.05%
- Percentil entre todas las CVEs puntuadas: 63
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (21)
Canonical — Ubuntu LinuxDebian — Debian LinuxNetapp — Active IQ Performance Analytics ServicesNetapp — Element SoftwareRedhat — Enterprise LinuxRedhat — Enterprise Linux Compute Node EUSRedhat — Enterprise Linux DesktopRedhat — Enterprise Linux FOR IBM Z Systems (structure A)Redhat — Enterprise Linux FOR IBM Z Systems EUSRedhat — Enterprise Linux FOR Power BIG EndianRedhat — Enterprise Linux FOR Power BIG Endian EUSRedhat — Enterprise Linux FOR Power Little EndianRedhat — Enterprise Linux FOR Power Little Endian EUSRedhat — Enterprise Linux FOR Scientific ComputingRedhat — Enterprise Linux ServerRedhat — Enterprise Linux Server AUSRedhat — Enterprise Linux Server FOR Power Little Endian Update Services FOR SAP SolutionsRedhat — Enterprise Linux Server TUSRedhat — Enterprise Linux Server Update Services FOR SAP SolutionsRedhat — Enterprise Linux WorkstationSystemd Project — Systemd
CWE
- CWE-125, CWE-200
- CWE-125
Referencias
- http://packetstormsecurity.com/files/152841/System-Down-A-systemd-journald-Exploit.html
- http://seclists.org/fulldisclosure/2019/May/21
- http://www.openwall.com/lists/oss-security/2019/05/10/4
- http://www.securityfocus.com/bid/106527
- https://access.redhat.com/errata/RHSA-2019:2091
- https://access.redhat.com/errata/RHSA-2019:3222
- https://access.redhat.com/errata/RHSA-2020:0593
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16866
- https://seclists.org/bugtraq/2019/May/25
- https://security.gentoo.org/glsa/201903-07
- https://security.netapp.com/advisory/ntap-20190117-0001/
- https://usn.ubuntu.com/3855-1/
- https://www.debian.org/security/2019/dsa-4367
- https://www.qualys.com/2019/01/09/system-down/system-down.txt
- http://packetstormsecurity.com/files/152841/System-Down-A-systemd-journald-Exploit.html
- http://seclists.org/fulldisclosure/2019/May/21
- http://www.openwall.com/lists/oss-security/2019/05/10/4
- http://www.securityfocus.com/bid/106527
- https://access.redhat.com/errata/RHSA-2019:2091
- https://access.redhat.com/errata/RHSA-2019:3222
- https://access.redhat.com/errata/RHSA-2020:0593
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16866
- https://seclists.org/bugtraq/2019/May/25
- https://security.gentoo.org/glsa/201903-07
- https://security.netapp.com/advisory/ntap-20190117-0001/
- https://usn.ubuntu.com/3855-1/
- https://www.debian.org/security/2019/dsa-4367
- https://www.qualys.com/2019/01/09/system-down/system-down.txt
JSON original (NVD)
Mostrar
{
"id": "CVE-2018-16866",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2018-16866",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2025-06-09T15:41:29.041122Z"
}
}
],
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 2.1,
"accessVector": "LOCAL",
"vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "NONE",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "LOW",
"obtainAllPrivilege": false,
"exploitabilityScore": 3.9,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.0",
"baseScore": 4.3,
"attackVector": "ADJACENT_NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "LOW"
},
"impactScore": 1.4,
"exploitabilityScore": 2.8
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 3.3,
"attackVector": "LOCAL",
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "LOW"
},
"impactScore": 1.4,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "secalert@redhat.com",
"affectedData": [
{
"vendor": "The systemd Project",
"product": "systemd",
"versions": [
{
"status": "affected",
"version": "from v221 to v239"
}
]
}
]
}
],
"published": "2019-01-11T19:29:00.233",
"references": [
{
"url": "http://packetstormsecurity.com/files/152841/System-Down-A-systemd-journald-Exploit.html",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "secalert@redhat.com"
},
{
"url": "http://seclists.org/fulldisclosure/2019/May/21",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "http://www.openwall.com/lists/oss-security/2019/05/10/4",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "http://www.securityfocus.com/bid/106527",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2019:2091",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2019:3222",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2020:0593",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16866",
"tags": [
"Issue Tracking",
"Patch",
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://seclists.org/bugtraq/2019/May/25",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://security.gentoo.org/glsa/201903-07",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://security.netapp.com/advisory/ntap-20190117-0001/",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://usn.ubuntu.com/3855-1/",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://www.debian.org/security/2019/dsa-4367",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://www.qualys.com/2019/01/09/system-down/system-down.txt",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "http://packetstormsecurity.com/files/152841/System-Down-A-systemd-journald-Exploit.html",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://seclists.org/fulldisclosure/2019/May/21",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://www.openwall.com/lists/oss-security/2019/05/10/4",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://www.securityfocus.com/bid/106527",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2019:2091",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2019:3222",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2020:0593",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16866",
"tags": [
"Issue Tracking",
"Patch",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://seclists.org/bugtraq/2019/May/25",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.gentoo.org/glsa/201903-07",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.netapp.com/advisory/ntap-20190117-0001/",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://usn.ubuntu.com/3855-1/",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.debian.org/security/2019/dsa-4367",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.qualys.com/2019/01/09/system-down/system-down.txt",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"description": [
{
"lang": "en",
"value": "CWE-125"
},
{
"lang": "en",
"value": "CWE-200"
}
]
},
{
"type": "Secondary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-125"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon ':'. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable."
},
{
"lang": "es",
"value": "Se ha descubierto una lectura fuera de límites en systemd-journald en la forma en la que analiza mensajes de registro que terminan con dos puntos \":\". Un atacante local puede emplear este error para divulgar datos de la memoria del proceso. Son vulnerables las versiones desde la v221 hasta la v239."
}
],
"lastModified": "2026-06-17T01:44:56.797",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "026806D8-B8D6-4C1C-8E1F-32096D38C937",
"versionEndIncluding": "239",
"versionStartIncluding": "221"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B"
},
{
"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"vulnerable": true,
"matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"
},
{
"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "07C312A0-CD2C-4B9C-B064-6409B25C278F"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:netapp:active_iq_performance_analytics_services:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "83077160-BB98-408B-81F0-8EF9E566BF28"
},
{
"criteria": "cpe:2.3:a:netapp:element_software:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FD53FA62-3E99-4D0B-8C62-4517F5CB8DE9"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5F6FA12B-504C-4DBF-A32E-0548557AA2ED"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "35A9FD70-E9CA-43AF-A453-E41EAB430E7F"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "33C068A4-3780-4EAB-A937-6082DF847564"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_\\(structure_a\\):7_s390x:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6207D51C-883B-4B65-B9BF-408197839BE5"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:7.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B7614783-C95A-4CBC-81D9-21A044001B6E"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1CDCFF34-6F1D-45A1-BE37-6A0E17B04801"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "83D5DE4F-4616-488D-ABA8-FD608784237E"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B4A684C7-88FD-43C4-9BDB-AE337FCBD0AB"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:7.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "656C4506-ECDD-44D7-BFC7-35B1A3E33DF2"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "37CE1DC7-72C5-483C-8921-0B462C8284D1"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "51EF4996-72F4-4FA4-814F-F5991E7A8318"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D99A687E-EAE6-417E-A88E-D0082BC194CD"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B353CE99-D57C-465B-AAB0-73EF581127D1"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:7.4:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C81C5D4E-3CAD-43CE-82BC-B0619CA3A74A"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:7.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "57B5CF5A-D48E-4AD0-91E2-F5BDD44B7A66"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D5F7E11E-FB34-4467-8919-2B6BEAABF665"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B76AA310-FEC7-497F-AF04-C3EC1E76C4CC"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:7.4:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "8C7E9628-0915-4C49-8929-F5E060A20CBB"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:7.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5C450C83-695F-4408-8B4F-0E7D6DDAE345"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "825ECE2D-E232-46E0-A047-074B34DB1E97"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secalert@redhat.com"
}