PHP Denial of Service Vulnerability - 02 (Aug 2016) - 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:php:php";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.809139");
  script_version("2024-02-08T05:05:59+0000");
  script_cve_id("CVE-2016-5114");
  script_tag(name:"cvss_base", value:"6.4");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:P");
  script_tag(name:"last_modification", value:"2024-02-08 05:05:59 +0000 (Thu, 08 Feb 2024)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-01-05 02:30:00 +0000 (Fri, 05 Jan 2018)");
  script_tag(name:"creation_date", value:"2016-08-17 15:56:15 +0530 (Wed, 17 Aug 2016)");
  script_name("PHP Denial of Service Vulnerability - 02 (Aug 2016) - Linux");

  script_tag(name:"summary", value:"PHP is prone to a denial of service (DoS) vulnerability.");

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

  script_tag(name:"insight", value:"The flaw is due to the 'sapi/fpm/fpm/fpm_log.c'
  script misinterprets the semantics of the snprintf return value.");

  script_tag(name:"impact", value:"Successfully exploiting this issue allow
  attackers to obtain sensitive information from process memory or cause a
  denial of service (out-of-bounds read and buffer overflow) via a long string.");

  script_tag(name:"affected", value:"PHP versions before 5.5.31, 5.6.x before
  5.6.17, and 7.x before 7.0.2 on Linux.");

  script_tag(name:"solution", value:"Update to PHP version 5.5.31, or 5.6.17,
  or 7.0.2, or later.");

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

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

  script_xref(name:"URL", value:"http://www.php.net/ChangeLog-5.php");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/81808");

  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_category(ACT_GATHER_INFO);
  script_family("Denial of Service");
  script_dependencies("gb_php_ssh_login_detect.nasl", "gb_php_http_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("php/detected", "Host/runs_unixoide");

  exit(0);
}

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

if( isnull( phpPort = get_app_port( cpe:CPE ) ) ) exit( 0 );
if( ! phpVer = get_app_version( cpe:CPE, port:phpPort ) ) exit( 0 );

if(version_is_less(version:phpVer, test_version:"5.5.31"))
{
  fix = '5.5.31';
  VULN = TRUE;
}

else if(phpVer =~ "^5\.6")
{
  if(version_in_range(version:phpVer, test_version:"5.6.0", test_version2:"5.6.16"))
  {
    fix = '5.6.17';
    VULN = TRUE;
  }
}

else if(phpVer =~ "^7\.0")
{
  if(version_in_range(version:phpVer, test_version:"7.0", test_version2:"7.0.1"))
  {
    fix = '7.0.2';
    VULN = TRUE;
  }
}

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

exit(99);