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 v3.0 5.5 MEDIUM
CVSS v2.0 4.9 MEDIUM

5.5^/10

CVSS v3.0 : 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
https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig	Patch Vendor Advisory
https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_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

Advertisement

Configurations

Configuration 1 (hide)

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

Information

Published : 2018-07-31 23:29

Updated : 2018-10-03 12:13

NVD link : CVE-2018-14775

Mitre link : CVE-2018-14775

JSON object : View

CWE

CWE-20

Improper Input Validation

Advertisement

Products Affected

openbsd

openbsd

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig", "name": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig", "tags": ["Patch", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig", "name": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig", "tags": ["Patch", "Vendor Advisory"], "refsource": "MISC"}, {"url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c", "name": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "refsource": "MISC"}, {"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", "name": "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"], "refsource": "MISC"}, {"url": "http://www.securitytracker.com/id/1041550", "name": "1041550", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "SECTRACK"}]}, "data_format": "MITRE", "description": {"description_data": [{"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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-20"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2018-14775", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"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"}, "severity": "MEDIUM", "impactScore": 6.9, "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"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}}, "publishedDate": "2018-08-01T06:29Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:openbsd:openbsd:6.3:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:openbsd:openbsd:6.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2018-10-03T19:13Z"}