OpenSSH 3.2.2 Security Vulnerability

# Copyright (C) 2021 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

CPE = "cpe:/a:openbsd:openssh";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.150644");
  script_version("2022-04-12T08:46:17+0000");
  script_tag(name:"last_modification", value:"2022-04-12 08:46:17 +0000 (Tue, 12 Apr 2022)");
  script_tag(name:"creation_date", value:"2021-05-27 14:42:43 +0000 (Thu, 27 May 2021)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_cve_id("CVE-2002-0765");

  script_tag(name:"qod_type", value:"remote_banner_unreliable");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("OpenSSH 3.2.2 Security Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("General");
  script_dependencies("gb_openssh_consolidation.nasl");
  script_mandatory_keys("openssh/detected");

  script_tag(name:"summary", value:"A possible security issue for sshd in OpenBSD has been reported.
  A vulnerability related to the implementation of BSD authentication exists in sshd that may have
  security implications.

  In access configurations which use YP with netgroups, sshd will authenticate users via ACL by
  checking for the requested username and password. Under certain circumstances, when sshd does ACL
  checks for the requested username, it may instead use the password entry of a different user for
  authentication. This could occur in environments where YP/NIS is in use.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"Please see the references for more information on the vulnerabilities.");

  script_tag(name:"affected", value:"OpenSSH version 3.2.2.");

  script_tag(name:"solution", value:"Update to version 3.3 or later.");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/4803");

  exit(0);
}
include("version_func.inc");
include("host_details.inc");

if( isnull( port = get_app_port( cpe:CPE ) ) )
  exit( 0 );

if( ! infos = get_app_version_and_location( cpe:CPE, port:port, exit_no_version:TRUE ) )
  exit( 0 );

vers = infos["version"];
path = infos["location"];

if( version_is_equal( version:vers, test_version:"3.2.2" ) ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:"3.3", install_path:path );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );