CVE-2016-1885 Information

Description

Integer signedness error in the amd64_set_ldt function in sys/amd64/amd64/sys_machdep.c in FreeBSD 9.3 before p39 10.1 before p31 and 10.2 before p14 allows local users to cause a denial of service (kernel panic) via an i386_set_ldt system call which triggers a heap-based buffer overflow.

CVSS Vector

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

Reference

http://packetstormsecurity.com/files/136276/FreeBSD-Kernel-amd64_set_ldt-Heap-Overflow.html http://seclists.org/fulldisclosure/2016/Mar/56 http://seclists.org/fulldisclosure/2016/Mar/67 http://www.coresecurity.com/advisories/freebsd-kernel-amd64setldt-heap-overflow http://www.securityfocus.com/archive/1/537812/100/0/threaded http://www.securityfocus.com/archive/1/537813/100/0/threaded http://www.securitytracker.com/id/1035309 https://security.FreeBSD.org/advisories/FreeBSD-SA-16:15.sysarch.asc https://www.exploit-db.com/exploits/39570/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.2