Sympa < 4.1.2 DoS Vulnerability

# SPDX-FileCopyrightText: 2004 David Maciejak
# 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-only

CPE = "cpe:/a:sympa:sympa";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.14298");
  script_version("2023-08-01T13:29:10+0000");
  script_tag(name:"last_modification", value:"2023-08-01 13:29:10 +0000 (Tue, 01 Aug 2023)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_xref(name:"OSVDB", value:"8690");

  script_name("Sympa < 4.1.2 DoS Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2004 David Maciejak");
  script_family("Web application abuses");
  script_dependencies("sympa_detect.nasl");
  script_mandatory_keys("sympa/detected");

  script_tag(name:"solution", value:"Update to version 4.1.2 or newer.");

  script_tag(name:"summary", value:"This version of Sympa has a flaw in one of it's scripts
  (wwsympa.pl) which would allow a remote attacker to overflow the sympa server. Specifically,
  within the cgi script wwsympa.pl is a do_search_list function which fails to perform
  bounds checking.");

  script_tag(name:"impact", value:"An attacker, passing a specially formatted long string
  to this function, would be able to crash the remote sympa server. At the
  time of this writing, the attack is only known to cause a Denial of Service (DoS).");

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

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

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if (!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);

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

if (version_is_less(version: version, test_version: "4.1.2")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.1.2", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);