Vulnerability CVE-2014-0998
Published: 2015-02-02

Description:
Integer signedness error in the vt console driver (formerly Newcons) in FreeBSD 9.3 before p10 and 10.1 before p6 allows local users to cause a denial of service (crash) and possibly gain privileges via a negative value in a VT_WAITACTIVE ioctl call, which triggers an array index error and out-of-bounds kernel memory access.

See advisories in our WLB2 database:
Topic
Author
Date
High
FreeBSD Kernel Crash / Code Execution / Disclosure
CoreLabs
28.01.2015

Type:

CWE-189

 (Numeric Errors)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Freebsd -> Freebsd 

 References:
http://seclists.org/fulldisclosure/2015/Jan/107
http://www.coresecurity.com/advisories/freebsd-kernel-multiple-vulnerabilities
http://www.securityfocus.com/archive/1/534563/100/0/threaded
https://www.freebsd.org/security/advisories/FreeBSD-EN-15:01.vt.asc
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