Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20130221) - Nessus

Critical Plugin ID: 65015

This page contains detailed information about the Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20130221) 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: 65015
Name: Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20130221)
Filename: sl_20130221_samba4_on_SL6_x.nasl
Vulnerability Published: 2012-04-10
This Plugin Published: 2013-03-05
Last Modification Time: 2021-01-14
Plugin Version: 1.6
Plugin Type: local
Plugin Family: Scientific Linux Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Vulnerability Information

Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

A flaw was found in the Samba suite's Perl-based DCE/RPC IDL (PIDL) compiler, used to generate code to handle RPC calls. This could result in code generated by the PIDL compiler to not sufficiently protect against buffer overflows. (CVE-2012-1182)

The samba4 packages have been upgraded to upstream version 4.0.0, which provides a number of bug fixes and enhancements over the previous version. In particular, improved interoperability with Active Directory (AD) domains. SSSD now uses the libndr-krb5pac library to parse the Privilege Attribute Certificate (PAC) issued by an AD Key Distribution Center (KDC).

The Cross Realm Kerberos Trust functionality provided by Identity Management, which relies on the capabilities of the samba4 client library, is included as a Technology Preview. This functionality and server libraries, is included as a Technology Preview. This functionality uses the libndr-nbt library to prepare Connection-less Lightweight Directory Access Protocol (CLDAP) messages.

Additionally, various improvements have been made to the Local Security Authority (LSA) and Net Logon services to allow verification of trust from a Windows system. Because the Cross Realm Kerberos Trust functionality is considered a Technology Preview, selected samba4 components are considered to be a Technology Preview. For more information on which Samba packages are considered a Technology Preview, refer to Table 5.1, 'Samba4 Package Support' in the Release Notes, linked to from the References.

This update also fixes the following bug :

- Prior to this update, if the Active Directory (AD) server was rebooted, Winbind sometimes failed to reconnect when requested by 'wbinfo -n' or 'wbinfo -s' commands. Consequently, looking up users using the wbinfo tool failed. This update applies upstream patches to fix this problem and now looking up a Security Identifier (SID) for a username, or a username for a given SID, works as expected after a domain controller is rebooted.

Warning: If you upgrade from Scientific Linux 6.3 to Scientific Linux 6.4 and you have Samba in use, you should make sure that you uninstall the package named 'samba4' to avoid conflicts during the upgrade.

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 Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20130221) vulnerability:

Metasploit: exploit/linux/samba/setinfopolicy_heap
[Samba SetInformationPolicy AuditEventsInfo Heap Overflow]
Exploit-DB: exploits/linux/remote/21850.rb
[EDB-21850: Samba 3.4.16/3.5.14/3.6.4 - SetInformationPolicy AuditEventsInfo Heap Overflow (Metasploit)]
GitHub: https://github.com/Eutectico/Steel-Mountain
[CVE-2012-1182]
GitHub: https://github.com/Qftm/Information_Collection_Handbook
[CVE-2012-1182]
GitHub: https://github.com/amishamunjal-az/Week16-Homework
[CVE-2012-1182]
GitHub: https://github.com/esteban0477/RedTeamPlaybook
[CVE-2012-1182]
GitHub: https://github.com/katgoods/week16
[CVE-2012-1182]
GitHub: https://github.com/notsag-dev/htb-blue
[CVE-2012-1182]
GitHub: https://github.com/notsag-dev/htb-legacy
[CVE-2012-1182]
GitHub: https://github.com/superhero1/OSCP-Prep
[CVE-2012-1182]
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:N/AC:L/Au:N/C:C/I:C/A:C

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

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

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

if (description)
{
  script_id(65015);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2012-1182");

  script_name(english:"Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20130221)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A flaw was found in the Samba suite's Perl-based DCE/RPC IDL (PIDL)
compiler, used to generate code to handle RPC calls. This could result
in code generated by the PIDL compiler to not sufficiently protect
against buffer overflows. (CVE-2012-1182)

The samba4 packages have been upgraded to upstream version 4.0.0,
which provides a number of bug fixes and enhancements over the
previous version. In particular, improved interoperability with Active
Directory (AD) domains. SSSD now uses the libndr-krb5pac library to
parse the Privilege Attribute Certificate (PAC) issued by an AD Key
Distribution Center (KDC).

The Cross Realm Kerberos Trust functionality provided by Identity
Management, which relies on the capabilities of the samba4 client
library, is included as a Technology Preview. This functionality and
server libraries, is included as a Technology Preview. This
functionality uses the libndr-nbt library to prepare Connection-less
Lightweight Directory Access Protocol (CLDAP) messages.

Additionally, various improvements have been made to the Local
Security Authority (LSA) and Net Logon services to allow verification
of trust from a Windows system. Because the Cross Realm Kerberos Trust
functionality is considered a Technology Preview, selected samba4
components are considered to be a Technology Preview. For more
information on which Samba packages are considered a Technology
Preview, refer to Table 5.1, 'Samba4 Package Support' in the Release
Notes, linked to from the References.

This update also fixes the following bug :

  - Prior to this update, if the Active Directory (AD)
    server was rebooted, Winbind sometimes failed to
    reconnect when requested by 'wbinfo -n' or 'wbinfo -s'
    commands. Consequently, looking up users using the
    wbinfo tool failed. This update applies upstream patches
    to fix this problem and now looking up a Security
    Identifier (SID) for a username, or a username for a
    given SID, works as expected after a domain controller
    is rebooted.

Warning: If you upgrade from Scientific Linux 6.3 to Scientific Linux
6.4 and you have Samba in use, you should make sure that you uninstall
the package named 'samba4' to avoid conflicts during the upgrade."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1303&L=scientific-linux-errata&T=0&P=206
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?c774b705"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A: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:"metasploit_name", value:'Samba SetInformationPolicy AuditEventsInfo Heap Overflow');
  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:fermilab:scientific_linux:samba4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-dc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-dc-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-pidl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-swat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-winbind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-winbind-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-winbind-krb5-locator");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/04/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/02/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/03/05");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 6.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);


flag = 0;
if (rpm_check(release:"SL6", reference:"samba4-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-client-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-common-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-dc-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-dc-libs-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-debuginfo-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-devel-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-libs-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-pidl-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-python-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-swat-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-test-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-winbind-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-winbind-clients-4.0.0-55.el6.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-winbind-krb5-locator-4.0.0-55.el6.rc4")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "samba4 / samba4-client / samba4-common / samba4-dc / samba4-dc-libs / etc");
}

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/sl_20130221_samba4_on_SL6_x.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\sl_20130221_samba4_on_SL6_x.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/sl_20130221_samba4_on_SL6_x.nasl

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How to Run

Here is how to run the Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20130221) 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 Scientific Linux Local Security Checks plugin family.
On the right side table select Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20130221) plugin ID 65015.
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 sl_20130221_samba4_on_SL6_x.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a sl_20130221_samba4_on_SL6_x.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - sl_20130221_samba4_on_SL6_x.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 sl_20130221_samba4_on_SL6_x.nasl -t <IP/HOST>

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References

See also:

Similar and related Nessus plugins:

58663 - CentOS 5 / 6 : samba (CESA-2012:0465)
58664 - CentOS 5 : samba3x (CESA-2012:0466)
65141 - CentOS 6 : samba4 (CESA-2013:0506)
65147 - CentOS 6 : evolution-mapi / openchange (CESA-2013:0515)
58729 - Debian DSA-2450-1 : samba - privilege escalation
58789 - Fedora 17 : samba-3.6.4-82.fc17.1 (2012-5793)
58823 - Fedora 15 : samba-3.5.14-73.fc15.1 (2012-5805)
58755 - Fedora 16 : samba-3.6.4-82.fc16 (2012-5843)
58980 - Fedora 15 : samba4-4.0.0-26.alpha11.fc15.6 (2012-6349)
59098 - Fedora 16 : samba4-4.0.0-38.alpha16.fc16 (2012-6382)
58671 - FreeBSD : samba -- 'root' credential remote code execution (baf37cd2-8351-11e1-894e-00215c6a37bb)
59675 - GLSA-201206-22 : Samba: Multiple vulnerabilities
59067 - Mac OS X Multiple Vulnerabilities (Security Update 2012-002) (BEAST)
58716 - Mandriva Linux Security Advisory : samba (MDVSA-2012:055)
74600 - openSUSE Security Update : samba (openSUSE-SU-2012:0507-1)
74601 - openSUSE Security Update : samba (openSUSE-SU-2012:0508-1)
68506 - Oracle Linux 5 / 6 : samba (ELSA-2012-0465)
68507 - Oracle Linux 5 : samba3x (ELSA-2012-0466)
68512 - Oracle Linux 4 : samba (ELSA-2012-0478)
68746 - Oracle Linux 6 : samba4 (ELSA-2013-0506)
68752 - Oracle Linux 6 : openchange (ELSA-2013-0515)
58672 - RHEL 5 / 6 : samba (RHSA-2012:0465)
58673 - RHEL 5 : samba3x (RHSA-2012:0466)
64757 - RHEL 6 : samba4 (RHSA-2013:0506)
64763 - RHEL 6 : openchange (RHSA-2013:0515)
58662 - Samba 3.x < 3.6.4 / 3.5.14 / 3.4.16 RPC Multiple Buffer Overflows
61297 - Scientific Linux Security Update : samba3x on SL5.x i386/x86_64 (20120410)
61298 - Scientific Linux Security Update : samba on SL5.x, SL6.x i386/x86_64 (20120410)
65013 - Scientific Linux Security Update : openchange on SL6.x i386/x86_64 (20130221)
80762 - Oracle Solaris Third-Party Patch Update : samba (cve_2012_1182_arbitrary_code)
58764 - SuSE 11.1 Security Update : Samba (SAT Patch Number 6124)
58767 - SuSE 11.2 Security Update : Samba (SAT Patch Number 6145)
58765 - SuSE 10 Security Update : Samba (ZYPP Patch Number 8058)
58743 - Ubuntu 8.04 LTS / 10.04 LTS / 11.04 / 11.10 : samba vulnerability (USN-1423-1)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file sl_20130221_samba4_on_SL6_x.nasl version 1.6. For more plugins, visit the Nessus Plugin Library.

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Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20130221) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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