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FreeBSD : FreeBSD -- Buffer overflow in keyboard driver (7bbc0e8c-600a-11e6-a6c3-14dae9d210b8)

high Nessus Plugin ID 92923

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Incorrect signedness comparison in the ioctl(2) handler allows a malicious local user to overwrite a portion of the kernel memory.
Impact : A local user may crash the kernel, read a portion of kernel memory and execute arbitrary code in kernel context. The result of executing an arbitrary kernel code is privilege escalation.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?b43363f6

Plugin Details

Severity: High

ID: 92923

File Name: freebsd_pkg_7bbc0e8c600a11e6a6c314dae9d210b8.nasl

Version: 2.7

Type: local

Published: 8/12/2016

Updated: 1/4/2021

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:freebsd, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Settings/ParanoidReport, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/11/2016

Vulnerability Publication Date: 5/17/2016

Exploitable With

Core Impact

Reference Information

CVE: CVE-2016-1886

FreeBSD: SA-16:18.atkbd