CVE-2016-6246

OpenBSD 5.8 and 5.9 allows certain local users with kern.usermount privileges to cause a denial of service (kernel panic) by mounting a tmpfs with a VNOVAL in the (1) username, (2) groupname, or (3) device name of the root node.

CVSS v3 4.4 MEDIUM
CVSS v2.0 4.9 MEDIUM

4.4^/10

CVSS v3 : MEDIUM

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

Exploitability : 0.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

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://www.openbsd.org/errata58.html	Release Notes
http://www.openbsd.org/errata59.html	Release Notes
http://www.openwall.com/lists/oss-security/2016/07/14/5	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/07/17/7	Exploit Mailing List Third Party Advisory
http://www.securityfocus.com/bid/91805

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:openbsd:openbsd:5.8:::::::*
	cpe:2.3:o:openbsd:openbsd:5.9:::::::*

History

No history.

Information

Published : 2017-03-07 16:59

Updated : 2024-02-04 19:11

NVD link : CVE-2016-6246

Mitre link : CVE-2016-6246

CVE.ORG link : CVE-2016-6246

JSON object : View

Products Affected

openbsd

openbsd

CWE

CWE-20

Improper Input Validation

{"id": "CVE-2016-6246", "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": 4.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 0.8}]}, "published": "2017-03-07T16:59:00.650", "references": [{"url": "http://www.openbsd.org/errata58.html", "tags": ["Release Notes"], "source": "cve@mitre.org"}, {"url": "http://www.openbsd.org/errata59.html", "tags": ["Release Notes"], "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2016/07/14/5", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2016/07/17/7", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/bid/91805", "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "OpenBSD 5.8 and 5.9 allows certain local users with kern.usermount privileges to cause a denial of service (kernel panic) by mounting a tmpfs with a VNOVAL in the (1) username, (2) groupname, or (3) device name of the root node."}, {"lang": "es", "value": "OpenBSD 5.8 y 5.9 permite a ciertos usuarios locales con privilegios kern.usermount provocar una denegaci\u00f3n de servicio (p\u00e1nico en el kernel) montando un tmpfs con un VNOVAL en el (1) nombre de usuario, (2) nombre de grupo o (3) nombre de dispositivo del nodo root."}], "lastModified": "2017-03-09T02:59:00.827", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:openbsd:openbsd:5.8:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F69813E0-1ED8-4417-BE52-BAC9CDCA2070"}, {"criteria": "cpe:2.3:o:openbsd:openbsd:5.9:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DD160B3E-E1D1-432E-ABFB-B288B4EEEE4A"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}