7.8
HIGH
CVE-2016-1886
FreeBSD Vulnerability: Integer signedness error in genkbd_commonioctl
Description

Integer signedness error in the genkbd_commonioctl function in sys/dev/kbd/kbd.c in FreeBSD 9.3 before p42, 10.1 before p34, 10.2 before p17, and 10.3 before p3 allows local users to obtain sensitive information from kernel memory, cause a denial of service (memory overwrite and kernel crash), or gain privileges via a negative value in the flen structure member in the arg argument in a SETFKEY ioctl call, which triggers a "two way heap and stack overflow."

INFO

Published Date :

May 25, 2016, 3:59 p.m.

Last Modified :

April 20, 2017, 1:59 a.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2016-1886 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Freebsd freebsd
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2016-1886.

URL Resource
http://cturt.github.io/SETFKEY.html Exploit
http://www.securityfocus.com/bid/90734
http://www.securitytracker.com/id/1035905
https://security.FreeBSD.org/patches/SA-16:18/atkbd.patch Patch
https://www.freebsd.org/security/advisories/FreeBSD-SA-16:18.atkbd.asc Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-1886 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-1886 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Apr. 20, 2017

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/90734 [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 26, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:o:freebsd:freebsd:10.3:*:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:10.2:*:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:10.1:*:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:9.3:*:*:*:*:*:*:*
    Added CVSS V2 (AV:L/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://security.FreeBSD.org/patches/SA-16:18/atkbd.patch No Types Assigned https://security.FreeBSD.org/patches/SA-16:18/atkbd.patch Patch
    Changed Reference Type https://www.freebsd.org/security/advisories/FreeBSD-SA-16:18.atkbd.asc No Types Assigned https://www.freebsd.org/security/advisories/FreeBSD-SA-16:18.atkbd.asc Advisory
    Changed Reference Type http://cturt.github.io/SETFKEY.html No Types Assigned http://cturt.github.io/SETFKEY.html Exploit
    Added CWE CWE-119
  • Initial Analysis by [email protected]

    May. 25, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} 0.00%

score

0.23458

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability