Vulnerabilities > CVE-2006-5276 - Stack Buffer Overflow vulnerability in Snort/Sourcefire DCE/RPC Packet Reassembly

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200703-01.
#
# The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(24749);
  script_version("1.20");
  script_cvs_date("Date: 2019/08/02 13:32:43");

  script_cve_id("CVE-2006-5276");
  script_xref(name:"GLSA", value:"200703-01");

  script_name(english:"GLSA-200703-01 : Snort: Remote execution of arbitrary code");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-200703-01
(Snort: Remote execution of arbitrary code)

    The Snort DCE/RPC preprocessor does not properly reassemble certain
    types of fragmented SMB and DCE/RPC packets.
  
Impact :

    A remote attacker could send specially crafted fragmented SMB or
    DCE/RPC packets, without the need to finish the TCP handshake, that
    would trigger a stack-based buffer overflow while being reassembled.
    This could lead to the execution of arbitrary code with the permissions
    of the user running the Snort preprocessor.
  
Workaround :

    Disable the DCE/RPC processor by commenting the 'preprocessor dcerpc'
    section in /etc/snort/snort.conf ."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200703-01"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All Snort users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=net-analyzer/snort-2.6.1.3'"
  );
  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:'Snort 2 DCE/RPC Preprocessor Buffer 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:gentoo:linux:snort");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2007/02/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/03/02");
  script_set_attribute(attribute:"vuln_publication_date", value:"2007/02/17");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"net-analyzer/snort", unaffected:make_list("ge 2.6.1.3"), vulnerable:make_list("lt 2.6.1.3"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Snort");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 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("compat.inc");

if (description)
{
  script_id(24686);
  script_version("1.23");
  script_cvs_date("Date: 2019/08/02 13:32:39");

  script_cve_id("CVE-2006-5276");
  script_xref(name:"CERT", value:"196240");

  script_name(english:"FreeBSD : snort -- DCE/RPC preprocessor vulnerability (afdf500f-c1f6-11db-95c5-000c6ec775d9)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A IBM Internet Security Systems Protection Advisory reports :

Snort is vulnerable to a stack-based buffer overflow as a result of
DCE/RPC reassembly. This vulnerability is in a dynamic-preprocessor
enabled in the default configuration, and the configuration for this
preprocessor allows for auto-recognition of SMB traffic to perform
reassembly on. No checks are performed to see if the traffic is part
of a valid TCP session, and multiple Write AndX requests can be
chained in the same TCP segment. As a result, an attacker can exploit
this overflow with a single TCP PDU sent across a network monitored by
Snort or Sourcefire.

Snort users who cannot upgrade immediately are advised to disable the
DCE/RPC preprocessor by removing the DCE/RPC preprocessor directives
from snort.conf and restarting Snort. However, be advised that
disabling the DCE/RPC preprocessor reduces detection capabilities for
attacks in DCE/RPC traffic. After upgrading, customers should
re-enable the DCE/RPC preprocessor."
  );
  # http://xforce.iss.net/xforce/xfdb/31275
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?cddab8bb"
  );
  # http://www.snort.org/docs/advisory-2007-02-19.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?24d71b61"
  );
  # https://vuxml.freebsd.org/freebsd/afdf500f-c1f6-11db-95c5-000c6ec775d9.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?90a93074"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  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:'Snort 2 DCE/RPC Preprocessor Buffer 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:freebsd:freebsd:snort");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2007/02/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2007/02/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/02/22");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 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");

  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);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"snort>=2.6.1<2.6.1.3")) 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");

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2007-2060.
#

include("compat.inc");

if (description)
{
  script_id(27749);
  script_version ("1.20");
  script_cvs_date("Date: 2019/08/02 13:32:25");

  script_cve_id("CVE-2006-5276");
  script_xref(name:"FEDORA", value:"2007-2060");

  script_name(english:"Fedora 7 : snort-2.7.0.1-3.fc7 (2007-2060)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This build moves from manual linking to alternatives.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2007-September/003647.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?97f7ef15"
  );
  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:'Snort 2 DCE/RPC Preprocessor Buffer 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:fedoraproject:fedora:snort");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:snort-bloat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:snort-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:snort-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:snort-mysql+flexresp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:snort-plain+flexresp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:snort-postgresql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:snort-postgresql+flexresp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:snort-snmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:snort-snmp+flexresp");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:7");

  script_set_attribute(attribute:"patch_publication_date", value:"2007/09/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/11/06");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("global_settings.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) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 7.x", "Fedora " + 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 ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC7", reference:"snort-2.7.0.1-3.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"snort-bloat-2.7.0.1-3.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"snort-debuginfo-2.7.0.1-3.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"snort-mysql-2.7.0.1-3.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"snort-mysql+flexresp-2.7.0.1-3.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"snort-plain+flexresp-2.7.0.1-3.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"snort-postgresql-2.7.0.1-3.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"snort-postgresql+flexresp-2.7.0.1-3.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"snort-snmp-2.7.0.1-3.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"snort-snmp+flexresp-2.7.0.1-3.fc7")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "snort / snort-bloat / snort-debuginfo / snort-mysql / etc");
}