Vulnerability Monitor

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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.

Published

2017-03-07T16:59:00.650

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 4.4 (MEDIUM)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

6.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	openbsd	openbsd	5.8	Yes
Operating System	openbsd	openbsd	5.9	Yes

References

http://www.openbsd.org/errata58.html Release Notes ([email protected])
http://www.openbsd.org/errata59.html Release Notes ([email protected])
http://www.openwall.com/lists/oss-security/2016/07/14/5 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2016/07/17/7 Exploit, Mailing List, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/91805 ([email protected])
http://www.openbsd.org/errata58.html Release Notes (af854a3a-2127-422b-91ae-364da2661108)
http://www.openbsd.org/errata59.html Release Notes (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2016/07/14/5 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2016/07/17/7 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/91805 (af854a3a-2127-422b-91ae-364da2661108)