Squid Multiple DoS Vulnerabilities (SQUID-2016:2) - 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("1.3.6.1.4.1.25623.1.0.807451");
  script_version("2023-07-21T05:05:22+0000");
  script_cve_id("CVE-2016-2571", "CVE-2016-2570", "CVE-2016-2569");
  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_tag(name:"last_modification", value:"2023-07-21 05:05:22 +0000 (Fri, 21 Jul 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-03-16 01:29:00 +0000 (Fri, 16 Mar 2018)");
  script_tag(name:"creation_date", value:"2016-03-03 11:34:15 +0530 (Thu, 03 Mar 2016)");
  script_tag(name:"qod_type", value:"remote_banner_unreliable");
  script_name("Squid Multiple DoS Vulnerabilities (SQUID-2016:2) - Linux");

  script_tag(name:"summary", value:"Squid is prone to multiple denial of service (DoS)
  vulnerabilities.");

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

  script_tag(name:"insight", value:"Multiple flaws exist due to:

  - The 'http.cc' script proceeds with the storage of certain data after a response parsing failure.

  - The Edge Side Includes (ESI) parser does not check buffer limits during XML parsing.

  - An improper appending of data to String objects.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote HTTP servers to cause a
  denial of service.");

  script_tag(name:"affected", value:"Squid version 3.x before 3.5.15 and 4.x before 4.0.7.");

  script_tag(name:"solution", value:"Update to version 3.5.15, 4.0.7 or later.");

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

  script_xref(name:"URL", value:"https://access.redhat.com/security/cve/cve-2016-2570");
  script_xref(name:"URL", value:"https://access.redhat.com/security/cve/cve-2016-2569");
  script_xref(name:"URL", value:"https://access.redhat.com/security/cve/cve-2016-2571");
  script_xref(name:"URL", value:"http://www.squid-cache.org/Advisories/SQUID-2016_2.txt");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("Denial of Service");
  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:"3.0.0", test_version2:"3.5.14")) {
    fix = "3.5.15";
    VULN = TRUE;
  }

  else if(version_in_range(version:vers, test_version:"4.0.0", test_version2:"4.0.6")) {
    fix = "4.0.7";
    VULN = TRUE;
  }

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

exit(99);