Ruby 'ARGF.inplace_mode' Buffer Overflow Vulnerability

# SPDX-FileCopyrightText: 2010 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:ruby-lang:ruby";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.801375");
  script_version("2025-09-09T05:38:49+0000");
  script_tag(name:"last_modification", value:"2025-09-09 05:38:49 +0000 (Tue, 09 Sep 2025)");
  script_tag(name:"creation_date", value:"2010-07-16 19:44:55 +0200 (Fri, 16 Jul 2010)");
  script_cve_id("CVE-2010-2489");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_name("Ruby 'ARGF.inplace_mode' Buffer Overflow Vulnerability");
  script_xref(name:"URL", value:"http://secunia.com/advisories/40442");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/41321");
  script_xref(name:"URL", value:"http://xforce.iss.net/xforce/xfdb/60135");
  script_xref(name:"URL", value:"http://svn.ruby-lang.org/repos/ruby/tags/v1_9_1_429/ChangeLog");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2010 Greenbone AG");
  script_family("Buffer overflow");
  script_dependencies("gb_ruby_consolidation.nasl", "os_detection.nasl");
  script_mandatory_keys("ruby/detected", "Host/runs_windows");

  script_tag(name:"insight", value:"The flaw caused by improper bounds checking when handling filenames on Windows
  systems. It is not properly validating value assigned to the 'ARGF.inplace_mode' variable.");

  script_tag(name:"solution", value:"Update to version 1.9.1-p429 or later.");

  script_tag(name:"summary", value:"Ruby is prone to a buffer overflow vulnerability.");

  script_tag(name:"impact", value:"Successful exploitation will allow local attackers to cause buffer overflow
  and execute arbitrary code on the system or cause the application to crash.");

  script_tag(name:"affected", value:"Ruby version 1.9.x before 1.9.1-p429 on Windows only.");

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

  script_xref(name:"URL", value:"http://rubyforge.org/frs/?group_id=167");
  exit(0);
}

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

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

if( version_in_range( version:vers, test_version:"1.9.0", test_version2:"1.9.1.428" ) ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:"1.9.1-p429", install_path:path );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );