Vulnerabilities > CVE-2005-3393 - Remote Format String vulnerability in Openvpn and Openvpn Access Server

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandrake Linux Security Advisory MDKSA-2005:206. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(20440);
  script_version ("1.13");
  script_cvs_date("Date: 2019/08/02 13:32:48");

  script_cve_id("CVE-2005-3393", "CVE-2005-3409");
  script_xref(name:"MDKSA", value:"2005:206-1");

  script_name(english:"Mandrake Linux Security Advisory : openvpn (MDKSA-2005:206-1)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Mandrake Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Two Denial of Service vulnerabilities exist in OpenVPN. The first
allows a malicious or compromised server to execute arbitrary code on
the client (CVE-2005-3393). The second DoS can occur if when in TCP
server mode, OpenVPN received an error on accept(2) and the resulting
exception handler causes a segfault (CVE-2005-3409).

The updated packages have been patched to correct these problems.

Update :

Packages are now available for Mandriva Linux 2006."
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openvpn package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:openvpn");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2006");

  script_set_attribute(attribute:"patch_publication_date", value:"2005/12/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/01/15");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 Tenable Network Security, Inc.");
  script_family(english:"Mandriva Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/Mandrake/release", "Host/Mandrake/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);
if (!get_kb_item("Host/Mandrake/release")) audit(AUDIT_OS_NOT, "Mandriva / Mandake Linux");
if (!get_kb_item("Host/Mandrake/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^(amd64|i[3-6]86|x86_64)$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Mandriva / Mandrake Linux", cpu);


flag = 0;
if (rpm_check(release:"MDK2006.0", reference:"openvpn-2.0.1-2.1.20060mdk", yank:"mdk")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_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 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("compat.inc");

if (description)
{
  script_id(21438);
  script_version("1.15");
  script_cvs_date("Date: 2019/08/02 13:32:37");

  script_cve_id("CVE-2005-3393");

  script_name(english:"FreeBSD : openvpn -- arbitrary code execution on client through malicious or compromised server (6129fdc7-6462-456d-a3ef-8fc3fbf44d16)");
  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:
"James Yonan reports :

A format string vulnerability in the foreign_option function in
options.c could potentially allow a malicious or compromised server to
execute arbitrary code on the client. Only non-Windows clients are
affected. The vulnerability only exists if (a) the client's TLS
negotiation with the server succeeds, (b) the server is malicious or
has been compromised such that it is configured to push a maliciously
crafted options string to the client, and (c) the client indicates its
willingness to accept pushed options from the server by having 'pull'
or 'client' in its configuration file (Credit: Vade79)."
  );
  # http://www.securityfocus.com/archive/1/415293/30/0/threaded
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.securityfocus.com/archive/1/415293/30/0/threaded"
  );
  # http://openvpn.net/changelog.html
  script_set_attribute(
    attribute:"see_also",
    value:"https://openvpn.net/community-resources/changelog-for-openvpn-2-1/"
  );
  # https://vuxml.freebsd.org/freebsd/6129fdc7-6462-456d-a3ef-8fc3fbf44d16.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?948a207d"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/10/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2005/11/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/05/13");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 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:"openvpn>=2.0<2.0.4")) 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");