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

High Plugin ID: 59748

This page contains detailed information about the FreeBSD : FreeBSD -- Privilege escalation when returning from kernel (aed44c4e-c067-11e1-b5e0-000c299b62e1) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 59748
Name: FreeBSD : FreeBSD -- Privilege escalation when returning from kernel (aed44c4e-c067-11e1-b5e0-000c299b62e1)
Filename: freebsd_pkg_aed44c4ec06711e1b5e0000c299b62e1.nasl
Vulnerability Published: 2012-06-12
This Plugin Published: 2012-06-28
Last Modification Time: 2021-01-06
Plugin Version: 1.14
Plugin Type: local
Plugin Family: FreeBSD Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/FreeBSD/pkg_info, Host/FreeBSD/release, Host/local_checks_enabled, Settings/ParanoidReport

Vulnerability Information

Severity: High
Vulnerability Published: 2012-06-12
Patch Published: 2012-06-27
CVE [?]: CVE-2012-0217
CPE [?]: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:FreeBSD
Exploited by Malware: True

Synopsis

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

Description

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.

Solution

Update the affected packages.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub, Immunity Canvas, Core Impact)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the FreeBSD : FreeBSD -- Privilege escalation when returning from kernel (aed44c4e-c067-11e1-b5e0-000c299b62e1) vulnerability:

Metasploit: exploit/freebsd/local/intel_sysret_priv_esc
[FreeBSD Intel SYSRET Privilege Escalation]
Exploit-DB: exploits/freebsd_x86-64/local/46508.rb
[EDB-46508: FreeBSD - Intel SYSRET Privilege Escalation (Metasploit)]
GitHub: https://github.com/Apri1y/Red-Team-links
[CVE-2012-0217]
GitHub: https://github.com/Ascotbe/Kernelhub
[CVE-2012-0217]
GitHub: https://github.com/Echocipher/Resource-list
[CVE-2012-0217]
GitHub: https://github.com/Flerov/WindowsExploitDev
[CVE-2012-0217]
GitHub: https://github.com/Snoopy-Sec/Localroot-ALL-CVE
[CVE-2012-0217]
GitHub: https://github.com/anoaghost/Localroot_Compile
[CVE-2012-0217]
GitHub: https://github.com/cranelab/exploit-development
[CVE-2012-0217]
GitHub: https://github.com/felixlinker/ifc-rv-thesis
[CVE-2012-0217]
GitHub: https://github.com/hudunkey/Red-Team-links
[CVE-2012-0217]
GitHub: https://github.com/john-80/-007
[CVE-2012-0217]
GitHub: https://github.com/lp008/Hack-readme
[CVE-2012-0217]
GitHub: https://github.com/slimdaddy/RedTeam
[CVE-2012-0217]
GitHub: https://github.com/xiaoZ-hc/redtool
[CVE-2012-0217]
GitHub: https://github.com/ycdxsb/WindowsPrivilegeEscalation
[CVE-2012-0217]
Immunity Canvas: CANVAS

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C

CVSS Base Score:	7.2 (High)
Impact Subscore:	10.0
Exploitability Subscore:	3.9
CVSS Temporal Score:	6.3 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.3 (Medium)

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2019 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(59748);
  script_version("1.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2012-0217");
  script_bugtraq_id(53856);
  script_xref(name:"FreeBSD", value:"SA-12:04.sysret");

  script_name(english:"FreeBSD : FreeBSD -- Privilege escalation when returning from kernel (aed44c4e-c067-11e1-b5e0-000c299b62e1)");
  script_summary(english:"Checks for updated packages in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote FreeBSD host is missing one or more security-related
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"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."
  );
  # https://vuxml.freebsd.org/freebsd/aed44c4e-c067-11e1-b5e0-000c299b62e1.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?e22e711d"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'FreeBSD Intel SYSRET Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:FreeBSD");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/06/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/06/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/06/28");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info", "Settings/ParanoidReport");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


if (report_paranoia < 2) audit(AUDIT_PARANOID);

flag = 0;

if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=7.4<7.4_9")) flag++;
if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=8.1<8.1_12")) flag++;
if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=8.2<8.2_9")) flag++;
if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=8.3<8.3_3")) flag++;
if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=9.0<9.0_3")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/freebsd_pkg_aed44c4ec06711e1b5e0000c299b62e1.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\freebsd_pkg_aed44c4ec06711e1b5e0000c299b62e1.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/freebsd_pkg_aed44c4ec06711e1b5e0000c299b62e1.nasl

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How to Run

Here is how to run the FreeBSD : FreeBSD -- Privilege escalation when returning from kernel (aed44c4e-c067-11e1-b5e0-000c299b62e1) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select FreeBSD Local Security Checks plugin family.
On the right side table select FreeBSD : FreeBSD -- Privilege escalation when returning from kernel (aed44c4e-c067-11e1-b5e0-000c299b62e1) plugin ID 59748.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl freebsd_pkg_aed44c4ec06711e1b5e0000c299b62e1.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a freebsd_pkg_aed44c4ec06711e1b5e0000c299b62e1.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - freebsd_pkg_aed44c4ec06711e1b5e0000c299b62e1.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state freebsd_pkg_aed44c4ec06711e1b5e0000c299b62e1.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

53856

FreeBSD Security Advisory:

SA-12:04.sysret

See also:

Similar and related Nessus plugins:

59479 - CentOS 5 : kernel (CESA-2012:0721)
59779 - Debian DSA-2501-1 : xen - several vulnerabilities
60088 - Debian DSA-2508-1 : kfreebsd-8 - privilege escalation
70184 - GLSA-201309-24 : Xen: Multiple vulnerabilities
74682 - openSUSE Security Update : xen (openSUSE-SU-2012:0886-1)
74683 - openSUSE Security Update : xen (openSUSE-2012-404)
68539 - Oracle Linux 5 : kernel (ELSA-2012-0721-1)
68540 - Oracle Linux 5 : kernel (ELSA-2012-0721)
79476 - OracleVM 3.0 : xen (OVMSA-2012-0020)
79477 - OracleVM 3.1 : xen (OVMSA-2012-0021)
79478 - OracleVM 2.2 : xen (OVMSA-2012-0022)
64039 - RHEL 5 : kernel (RHSA-2012:0720)
59467 - RHEL 5 : kernel (RHSA-2012:0721)
61326 - Scientific Linux Security Update : kernel on SL5.x i386/x86_64 (20120612)
59460 - MS12-042: Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege (2711167)
76829 - Oracle Solaris Critical Patch Update : oct2012_SRU10_5
64233 - SuSE 11.1 Security Update : Xen (SAT Patch Number 6399)
59469 - SuSE 10 Security Update : Xen (ZYPP Patch Number 8180)
68573 - Oracle Linux 5 : kernel (ELSA-2012-1061-1)
68574 - Oracle Linux 5 : kernel (ELSA-2012-1061)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file freebsd_pkg_aed44c4ec06711e1b5e0000c299b62e1.nasl version 1.14. For more plugins, visit the Nessus Plugin Library.

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

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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