CVE-2018-14775

tss_alloc in sys/arch/i386/i386/gdt.c in OpenBSD 6.2 and 6.3 has a Local Denial of Service (system crash) due to incorrect I/O port access control on the i386 architecture.

CVSS v3 5.5 MEDIUM
CVSS v2.0 4.9 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.9^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c	Issue Tracking Patch Vendor Advisory
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c.diff?r1=1.37&r2=1.37.8.1&f=h	Patch Vendor Advisory
http://www.securitytracker.com/id/1041550	Third Party Advisory VDB Entry
https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig	Patch Vendor Advisory
https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig	Patch Vendor Advisory
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c	Issue Tracking Patch Vendor Advisory
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c.diff?r1=1.37&r2=1.37.8.1&f=h	Patch Vendor Advisory
http://www.securitytracker.com/id/1041550	Third Party Advisory VDB Entry
https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig	Patch Vendor Advisory
https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:openbsd:openbsd:6.2:::::::*
	cpe:2.3:o:openbsd:openbsd:6.3:::::::*

History

No history.

Information

Published : 2018-08-01 06:29

Updated : 2024-11-21 03:49

NVD link : CVE-2018-14775

Mitre link : CVE-2018-14775

CVE.ORG link : CVE-2018-14775

JSON object : View

Products Affected

openbsd

openbsd

CWE

CWE-20

Improper Input Validation

{"id": "CVE-2018-14775", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/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}]}, "published": "2018-08-01T06:29:00.633", "references": [{"url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c.diff?r1=1.37&r2=1.37.8.1&f=h", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.securitytracker.com/id/1041550", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c.diff?r1=1.37&r2=1.37.8.1&f=h", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.securitytracker.com/id/1041550", "tags": ["Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "tss_alloc in sys/arch/i386/i386/gdt.c in OpenBSD 6.2 and 6.3 has a Local Denial of Service (system crash) due to incorrect I/O port access control on the i386 architecture."}, {"lang": "es", "value": "tss_alloc en sys/arch/i386/i386/gdt.c en OpenBSD 6.2 y 6.3 tiene una denegaci\u00f3n de servicio (DoS) local (cierre inesperado del sistema) debido a un acceso incorrecto al puerto I/O en la arquitectura i386."}], "lastModified": "2024-11-21T03:49:45.897", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:openbsd:openbsd:6.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "05106657-059F-4845-BA6C-2B610515ABC6"}, {"criteria": "cpe:2.3:o:openbsd:openbsd:6.3:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3326FE9E-7B44-4F41-BF89-3115E36D1FF6"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}