CVE-2016-6246 - Vulnerability Details - OpenCVE

Description

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.

Published: 2017-03-07

Score: 4.4 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

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

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2016-7176	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.

No CVSS v4.0

No CVSS v3.1

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Complete

This CVE is not in the KEV list.

The EPSS score is 0.00046.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://www.openbsd.org/errata58.html
http://www.openbsd.org/errata59.html
http://www.openwall.com/lists/oss-security/2016/07/14/5
http://www.openwall.com/lists/oss-security/2016/07/17/7
http://www.securityfocus.com/bid/91805

History

No history.

Subscriptions

Openbsd Openbsd

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2017-03-07T16:00:00.000Z

Updated: 2024-08-06T01:22:20.763Z

Reserved: 2016-07-17T00:00:00.000Z

Link: CVE-2016-6246

Vulnrichment

No data.

NVD

Status : Deferred

Published: 2017-03-07T16:59:00.650

Modified: 2025-04-20T01:37:25.860

Link: CVE-2016-6246

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-20

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2016-07-14T00:00:00.000Z", "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."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2017-03-08T10:57:01.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "http://www.openbsd.org/errata59.html"}, {"name": "[oss-security] 20160714 Multiple Bugs in OpenBSD Kernel", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2016/07/14/5"}, {"name": "[oss-security] 20160717 ReL Multiple Bugs in OpenBSD Kernel", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2016/07/17/7"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://www.openbsd.org/errata58.html"}, {"name": "91805", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/91805"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2016-6246", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "http://www.openbsd.org/errata59.html", "refsource": "CONFIRM", "url": "http://www.openbsd.org/errata59.html"}, {"name": "[oss-security] 20160714 Multiple Bugs in OpenBSD Kernel", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2016/07/14/5"}, {"name": "[oss-security] 20160717 ReL Multiple Bugs in OpenBSD Kernel", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2016/07/17/7"}, {"name": "http://www.openbsd.org/errata58.html", "refsource": "CONFIRM", "url": "http://www.openbsd.org/errata58.html"}, {"name": "91805", "refsource": "BID", "url": "http://www.securityfocus.com/bid/91805"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T01:22:20.763Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://www.openbsd.org/errata59.html"}, {"name": "[oss-security] 20160714 Multiple Bugs in OpenBSD Kernel", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2016/07/14/5"}, {"name": "[oss-security] 20160717 ReL Multiple Bugs in OpenBSD Kernel", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2016/07/17/7"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://www.openbsd.org/errata58.html"}, {"name": "91805", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/91805"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2016-6246", "datePublished": "2017-03-07T16:00:00.000Z", "dateReserved": "2016-07-17T00:00:00.000Z", "dateUpdated": "2024-08-06T01:22:20.763Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:openbsd:openbsd:5.8:*:*:*:*:*:*:*", "matchCriteriaId": "F69813E0-1ED8-4417-BE52-BAC9CDCA2070", "vulnerable": true}, {"criteria": "cpe:2.3:o:openbsd:openbsd:5.9:*:*:*:*:*:*:*", "matchCriteriaId": "DD160B3E-E1D1-432E-ABFB-B288B4EEEE4A", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}], "id": "CVE-2016-6246", "lastModified": "2025-04-20T01:37:25.860", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 4.9, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 0.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-03-07T16:59:00.650", "references": [{"source": "cve@mitre.org", "tags": ["Release Notes"], "url": "http://www.openbsd.org/errata58.html"}, {"source": "cve@mitre.org", "tags": ["Release Notes"], "url": "http://www.openbsd.org/errata59.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/07/14/5"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/07/17/7"}, {"source": "cve@mitre.org", "url": "http://www.securityfocus.com/bid/91805"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "http://www.openbsd.org/errata58.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "http://www.openbsd.org/errata59.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/07/14/5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/07/17/7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/91805"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}