UnrealIRCd User Authentication Buffer Overflow Vulnerability

# SPDX-FileCopyrightText: 2010 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

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

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.100856");
  script_version("2023-07-28T16:09:07+0000");
  script_tag(name:"last_modification", value:"2023-07-28 16:09:07 +0000 (Fri, 28 Jul 2023)");
  script_tag(name:"creation_date", value:"2010-10-15 13:28:27 +0200 (Fri, 15 Oct 2010)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_cve_id("CVE-2009-4893");

  script_name("UnrealIRCd User Authentication Buffer Overflow Vulnerability");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/42077");
  script_xref(name:"URL", value:"http://www.unrealircd.com/txt/unrealsecadvisory.20090413.txt");
  script_xref(name:"URL", value:"http://unrealircd.com/");

  script_tag(name:"qod_type", value:"remote_banner");
  script_category(ACT_GATHER_INFO);
  script_family("Buffer overflow");
  script_copyright("Copyright (C) 2010 Greenbone AG");
  script_dependencies("gb_unrealircd_detect.nasl");
  script_mandatory_keys("UnrealIRCD/Detected");
  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"solution", value:"Updates are available, please see
 the references for more information.");
  script_tag(name:"summary", value:"UnrealIRCd is prone to a buffer-overflow
 vulnerability. Successful exploits will allow remote attackers to execute arbitrary
 code within the context of the affected application. Failed exploit
 attempts will result in a denial-of-service condition.");
  exit(0);
}


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

if(!UnPort = get_app_port(cpe:CPE)){
  exit(0);
}

if(!UnVer = get_app_version(cpe:CPE, port:UnPort)){
  exit(0);
}

if(UnVer =~ "^3\.2")
{
  if(version_is_less(version: UnVer, test_version: "3.2.8.1"))
  {
    report = report_fixed_ver(installed_version:UnVer, fixed_version:"3.2.8.1");
    security_message(data:report, port:UnPort);
    exit(0);
  }
}