FreeBSD : FreeBSD -- Privilege escalation when returning from kernel (aed44c4e-c067-11e1-b5e0-000c299b62e1)

high Nessus Plugin ID 59748


The remote FreeBSD host is missing one or more security-related updates.


Problem description :

FreeBSD/amd64 runs on CPUs from different vendors. Due to varying behaviour of CPUs in 64 bit mode a sanity check of the kernel may be insufficient when returning from a system call.

Successful exploitation of the problem can lead to local kernel privilege escalation, kernel data corruption and/or crash. To exploit this vulnerability, an attacker must be able to run code with user privileges on the target system.


Update the affected packages.

See Also

Plugin Details

Severity: High

ID: 59748

File Name: freebsd_pkg_aed44c4ec06711e1b5e0000c299b62e1.nasl

Version: 1.14

Type: local

Published: 6/28/2012

Updated: 1/6/2021

Configuration: Enable paranoid mode

Risk Information


Risk Factor: Critical

Score: 9.8


Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:H/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:FreeBSD, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/27/2012

Vulnerability Publication Date: 6/12/2012

Exploitable With


Core Impact

Metasploit (FreeBSD Intel SYSRET Privilege Escalation)

Reference Information

CVE: CVE-2012-0217

BID: 53856

FreeBSD: SA-12:04.sysret