National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-1886 Detail

Current 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."

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.8 HIGH
Vector:  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink 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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:freebsd:freebsd:9.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:freebsd:freebsd:10.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:freebsd:freebsd:10.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:freebsd:freebsd:10.3:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-1886
NVD Published Date:
05/25/2016
NVD Last Modified:
04/19/2017