CVE-2018-7858
Estado: ModificadaMedia (5.5)—
Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.61%
- Percentil entre todas las CVEs puntuadas: 48
- Fecha de la puntuación: 7/10/2026
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 (9)
CWE
- CWE-125
Referencias
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html
- http://www.openwall.com/lists/oss-security/2018/03/09/1
- http://www.securityfocus.com/bid/103350
- https://access.redhat.com/errata/RHSA-2018:1369
- https://access.redhat.com/errata/RHSA-2018:1416
- https://access.redhat.com/errata/RHSA-2018:2162
- https://bugzilla.redhat.com/show_bug.cgi?id=1553402
- https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html
- https://usn.ubuntu.com/3649-1/
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html
- http://www.openwall.com/lists/oss-security/2018/03/09/1
- http://www.securityfocus.com/bid/103350
- https://access.redhat.com/errata/RHSA-2018:1369
- https://access.redhat.com/errata/RHSA-2018:1416
- https://access.redhat.com/errata/RHSA-2018:2162
- https://bugzilla.redhat.com/show_bug.cgi?id=1553402
- https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html
- https://usn.ubuntu.com/3649-1/
JSON original (NVD)
Mostrar
{
"id": "CVE-2018-7858",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 2.1,
"accessVector": "LOCAL",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "LOW",
"obtainAllPrivilege": false,
"exploitabilityScore": 3.9,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.5,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2018-03-12T21:29:01.267",
"references": [
{
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html",
"tags": [
"Mailing List",
"Release Notes",
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "http://www.openwall.com/lists/oss-security/2018/03/09/1",
"tags": [
"Mailing List",
"Patch",
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "http://www.securityfocus.com/bid/103350",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "cve@mitre.org"
},
{
"url": "https://access.redhat.com/errata/RHSA-2018:1369",
"tags": [
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://access.redhat.com/errata/RHSA-2018:1416",
"tags": [
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://access.redhat.com/errata/RHSA-2018:2162",
"tags": [
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1553402",
"tags": [
"Issue Tracking",
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html",
"tags": [
"Mailing List",
"Patch",
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://usn.ubuntu.com/3649-1/",
"tags": [
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html",
"tags": [
"Mailing List",
"Release Notes",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://www.openwall.com/lists/oss-security/2018/03/09/1",
"tags": [
"Mailing List",
"Patch",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://www.securityfocus.com/bid/103350",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2018:1369",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2018:1416",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2018:2162",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1553402",
"tags": [
"Issue Tracking",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html",
"tags": [
"Mailing List",
"Patch",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://usn.ubuntu.com/3649-1/",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-125"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display."
},
{
"lang": "es",
"value": "Quick Emulator (también conocido como QEMU), cuando se integra con soporte para Cirrus CLGD 54xx VGA Emulator, permite que usuarios privilegiados locales, invitados del sistema operativo, provoquen una denegación de servicio (acceso fuera de límites y cierre inesperado del proceso QEMU) aprovechando los cálculos de región incorrectos al actualizar la pantalla VGA."
}
],
"lastModified": "2026-06-17T02:03:52.710",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "809CA527-CA2A-41A5-8592-95C8ACAA0F2C",
"versionEndIncluding": "2.11.2"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5F65DAB0-3DAD-49FF-BC73-3581CC3D5BF3"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EE249E1B-A1FD-4E08-AA71-A0E1F10FFE97"
},
{
"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_server:6.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9BBCD86A-E6C7-4444-9D74-F861084090F0"
},
{
"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:7.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B353CE99-D57C-465B-AAB0-73EF581127D1"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A4E9DD8A-A68B-4A69-8B01-BFF92A2020A8"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BF77CDCF-B9C9-427D-B2BF-36650FB2148C"
},
{
"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_workstation:6.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E5ED5807-55B7-47C5-97A6-03233F4FBC3A"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "825ECE2D-E232-46E0-A047-074B34DB1E97"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B5A6F2F3-4894-4392-8296-3B8DD2679084"
},
{
"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"
}
]
}
],
"sourceIdentifier": "cve@mitre.org"
}