High severity · published May 25, 2016
CVE-2016-1886
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…
7.8
CVSS
1.1%
EPSS
No
On KEV
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."
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Freebsd · Freebsd
9.3; 10.1; 10.2; 10.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-1886
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-1886
Exploit
http://cturt.github.io/SETFKEY.html
www.securityfocus.com
http://www.securityfocus.com/bid/90734
www.securitytracker.com
http://www.securitytracker.com/id/1035905
Patch
https://security.FreeBSD.org/patches/SA-16:18/atkbd.patch
Vendor Advisory
https://www.freebsd.org/security/advisories/FreeBSD-SA-16:18.atkbd.asc
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