FreeBSD : mysql -- mysql_real_connect buffer overflow vulnerability (835256b8-46ed-11d9-8ce0-00065be4b5b6)

#%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 2003-2018 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('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(19009);
  script_version("1.25");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2004-0836");
  script_bugtraq_id(10981);

  script_name(english:"FreeBSD : mysql -- mysql_real_connect buffer overflow vulnerability (835256b8-46ed-11d9-8ce0-00065be4b5b6)");
  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:
"The mysql_real_connect function doesn't properly handle DNS replies by
copying the IP address into a buffer without any length checking. A
specially crafted DNS reply may therefore be used to cause a buffer
overflow on affected systems.

Note that whether this issue can be exploitable depends on the system
library responsible for the gethostbyname function. The bug finder,
Lukasz Wojtow, explaines this with the following words :

In glibc there is a limitation for an IP address to have only 4 bytes
(obviously), but generally speaking the length of the address comes
with a response for dns query (i know it sounds funny but read rfc1035
if you don't believe). This bug can occur on libraries where
gethostbyname function takes length from dns's response"
  );
  # http://bugs.mysql.com/bug.php?id=4017
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.mysql.com/bug.php?id=4017"
  );
  # http://lists.mysql.com/internals/14726
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.mysql.com/internals/14726"
  );
  # http://rhn.redhat.com/errata/RHSA-2004-611.html
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2004:611"
  );
  # https://vuxml.freebsd.org/freebsd/835256b8-46ed-11d9-8ce0-00065be4b5b6.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?bfc0a796"
  );
  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_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(119);

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2004/06/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2004/12/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/07/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2005-2021 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");

  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:"mysql-server<=3.23.58_3")) flag++;
if (pkg_test(save_report:TRUE, pkg:"mysql-server>=4.*<4.0.21")) flag++;
if (pkg_test(save_report:TRUE, pkg:"mysql-client<=3.23.58_3")) flag++;
if (pkg_test(save_report:TRUE, pkg:"mysql-client>=4.*<4.0.21")) 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");