Squid Poisoning Vulnerability (SQUID-2016:7) - Linux

# 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:squid-cache:squid";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.808051");
  script_version("2023-07-20T05:05:17+0000");
  script_cve_id("CVE-2016-4553");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:P/A:N");
  script_tag(name:"last_modification", value:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-12-27 16:08:00 +0000 (Fri, 27 Dec 2019)");
  script_tag(name:"creation_date", value:"2016-05-19 19:31:22 +0530 (Thu, 19 May 2016)");
  script_tag(name:"qod_type", value:"remote_banner_unreliable");
  script_name("Squid Poisoning Vulnerability (SQUID-2016:7) - Linux");

  script_tag(name:"summary", value:"Squid is prone to a cache poisoning vulnerability.");

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

  script_tag(name:"insight", value:"The flaw exists due to an incorrect data validation of
  intercepted HTTP Request messages.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote attackers to cause
  cache poisoning.");

  script_tag(name:"affected", value:"Squid version 3.2.0.11 through 3.5.17 and 4.x before
  4.0.10.");

  script_tag(name:"solution", value:"Update to version 3.5.18, 4.0.10 or later.");

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

  script_xref(name:"URL", value:"http://www.squid-cache.org/Advisories/SQUID-2016_7.txt");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("Web Servers");
  script_dependencies("gb_squid_http_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("squid/detected", "Host/runs_unixoide");

  exit(0);
}

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

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

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

if(vers =~ "^[34]\.") {
  if(version_in_range(version:vers, test_version:"3.2.0.11", test_version2:"3.5.17")) {
    fix = "3.5.18";
    VULN = TRUE;
  }

  else if(version_in_range(version:vers, test_version:"4.0.0", test_version2:"4.0.9")) {
    fix = "4.0.10";
    VULN = TRUE;
  }

  if(VULN) {
    report = report_fixed_ver(installed_version:vers, fixed_version:fix);
    security_message(data:report, port:port);
    exit(0);
  }
}

exit(99);