Exim 4.69 - 4.87 Information Disclosure Vulnerability

# SPDX-FileCopyrightText: 2016 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:exim:exim";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106485");
  script_version("2024-03-04T14:37:58+0000");
  script_tag(name:"last_modification", value:"2024-03-04 14:37:58 +0000 (Mon, 04 Mar 2024)");
  script_tag(name:"creation_date", value:"2016-12-23 10:52:32 +0700 (Fri, 23 Dec 2016)");
  script_tag(name:"cvss_base", value:"2.6");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:N/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2017-02-15 12:47:00 +0000 (Wed, 15 Feb 2017)");

  script_cve_id("CVE-2016-9963");

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

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

  script_name("Exim 4.69 - 4.87 Information Disclosure Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("SMTP problems");
  script_dependencies("gb_exim_smtp_detect.nasl");
  script_mandatory_keys("exim/detected");

  script_tag(name:"summary", value:"Exim is prone to an information disclosure vulnerability.");

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

  script_tag(name:"insight", value:"If several conditions are met, Exim leaks private information to
  a remote attacker.");

  script_tag(name:"impact", value:"A remote attacker may obtain private information.");

  script_tag(name:"affected", value:"Exim versions 4.69 through 4.87.");

  script_tag(name:"solution", value:"Update to version 4.87.1 or later.");

  script_xref(name:"URL", value:"https://bugs.exim.org/show_bug.cgi?id=1996");

  exit(0);
}

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

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

if (!version = get_app_version(cpe: CPE, port: port))
  exit(0);

if (version_in_range(version: version, test_version: "4.69", test_version2: "4.87")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.87.1");
  security_message(port: port, data: report);
  exit(0);
}

exit(99);