Code-Crafters Ability Mail Server IMAP FETCH Request Remote Denial Of Service Vulnerability

# SPDX-FileCopyrightText: 2009 Greenbone AG
# 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.100298");
  script_version("2023-10-27T16:11:32+0000");
  script_tag(name:"last_modification", value:"2023-10-27 16:11:32 +0000 (Fri, 27 Oct 2023)");
  script_tag(name:"creation_date", value:"2009-10-10 11:30:08 +0200 (Sat, 10 Oct 2009)");
  script_cve_id("CVE-2009-3445");
  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_name("Code-Crafters Ability Mail Server IMAP FETCH Request Remote Denial Of Service Vulnerability");
  script_category(ACT_GATHER_INFO);
  script_family("Denial of Service");
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_dependencies("imap4_banner.nasl");
  script_require_ports("Services/imap", 143);
  script_mandatory_keys("imap/codecrafters/ability/detected");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/36519");
  script_xref(name:"URL", value:"http://www.code-crafters.com/abilitymailserver/updatelog.html");

  script_tag(name:"impact", value:"Attackers can exploit this issue to cause the affected application to
  crash, denying service to legitimate users.");

  script_tag(name:"affected", value:"Versions prior to Ability Mail Server 2.70 are affected.");

  script_tag(name:"solution", value:"Updates are available. Please see the references for details.");

  script_tag(name:"summary", value:"Ability Mail Server is prone to a denial of service (DoS) vulnerability
  because it fails to adequately handle IMAP requests.");

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

  exit(0);
}

include("imap_func.inc");
include("version_func.inc");
include("misc_func.inc");
include("port_service_func.inc");

port = imap_get_port( default:143 );

if( ! banner = imap_get_banner( port:port ) )
  exit( 0 );

if( "Code-Crafters" >!< banner )
  exit( 0 );

version = eregmatch( pattern:"Ability Mail Server ([0-9.]+)", string:banner );
if( isnull( version[1] ) )
  exit( 0 );

if( version_is_less( version:version[1], test_version:"2.70" ) ) {
  report = report_fixed_ver( installed_version:version[1], fixed_version:"2.70" );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );