Ruby on Rails Action Pack Remote Code Execution Vulnerability - 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:rubyonrails:rails";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.809353");
  script_version("2024-02-15T05:05:40+0000");
  script_cve_id("CVE-2016-2098");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"last_modification", value:"2024-02-15 05:05:40 +0000 (Thu, 15 Feb 2024)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-08-08 15:43:00 +0000 (Thu, 08 Aug 2019)");
  script_tag(name:"creation_date", value:"2016-10-14 16:40:26 +0530 (Fri, 14 Oct 2016)");
  script_tag(name:"qod_type", value:"remote_banner_unreliable");
  script_name("Ruby on Rails Action Pack Remote Code Execution Vulnerability - Linux");

  script_tag(name:"summary", value:"Ruby on Rails is prone to a remote code execution (RCE) 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 an improper sanitization
  of user supplied inputs to the 'render' method in a controller or view by
  'Action Pack'.");

  script_tag(name:"impact", value:"Successful exploitation will allow a remote
  attacker to control the arguments of the render method in a controller or a view,
  resulting in the possibility of executing arbitrary ruby code.");

  script_tag(name:"affected", value:"Ruby on Rails before 3.2.22.2,
  Ruby on Rails 4.x before 4.1.14.2 and
  Ruby on Rails 4.2.x before 4.2.5.2 on Linux.");

  script_tag(name:"solution", value:"Upgrade to Ruby on Rails 3.2.22.2 or 4.1.14.2 or
  4.2.5.2 or later.");

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

  script_xref(name:"URL", value:"https://www.debian.org/security/2016/dsa-3509");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/83725");
  script_xref(name:"URL", value:"https://groups.google.com/forum/message/raw?msg=rubyonrails-security/ly-IH-fxr_Q/WLoOhcMZIAAJ");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_rails_consolidation.nasl", "os_detection.nasl");
  script_mandatory_keys("ruby/detected", "Host/runs_unixoide");
  exit(0);
}

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

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

if( ! infos = get_app_version_and_location( cpe: CPE, port: port, exit_no_version: TRUE ) )
  exit( 0 );

version = infos["version"];
location = infos["location"];

VULN = FALSE;

if( version_is_less (version: version, test_version: "3.2.22.2" ) )
{
  fix = "3.2.22.2";
  VULN = TRUE;
}

else if( version =~ "^(4\.1)" )
{
  if( version_is_less( version: version, test_version: "4.1.14.2" ) )
  {
    fix = "4.1.14.2";
    VULN = TRUE;
  }
}

else if( version =~ "^(4\.2)" )
{
  if( version_is_less( version: version, test_version:"4.2.5.2" ) )
  {
    fix = "4.2.5.2";
    VULN = TRUE;
  }
}

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

exit( 99 );