Microsoft Silverlight Multiple Memory Leak Vulnerabilities

# SPDX-FileCopyrightText: 2011 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:microsoft:silverlight";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.801935");
  script_version("2026-04-28T06:28:06+0000");
  script_tag(name:"last_modification", value:"2026-04-28 06:28:06 +0000 (Tue, 28 Apr 2026)");
  script_tag(name:"creation_date", value:"2011-05-16 15:25:30 +0200 (Mon, 16 May 2011)");
  script_cve_id("CVE-2011-1844", "CVE-2011-1845");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_name("Microsoft Silverlight Multiple Memory Leak Vulnerabilities");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2011 Greenbone AG");
  script_family("Windows");
  script_dependencies("gb_ms_silverlight_detect.nasl");
  script_mandatory_keys("Microsoft/Silverlight/Installed");

  script_xref(name:"URL", value:"http://support.microsoft.com/kb/2526954");
  script_xref(name:"URL", value:"http://isc.sans.edu/diary.html?storyid=10747");

  script_tag(name:"summary", value:"Microsoft Silverlight is prone to multiple memory leak
  vulnerabilities.");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker to cause a denial
  of service (DoS).");

  script_tag(name:"affected", value:"Microsoft Silverlight version 4 before 4.0.60310.0.");

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

  - An error in handling of 'popup' control and a custom 'DependencyProperty' property.

  - An error in the 'DataGrid' control implementation, which allows remote attacker to consume
  memory via an application involving subscriptions to an INotifyDataErrorInfo.ErrorsChanged event
  or TextBlock or a TextBox element.");

  script_tag(name:"solution", value:"Update to version 4.0.60310.0 or later.");

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

  exit(0);
}

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

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

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

if( vers !~ "^4\." )
  exit( 99 );

if( version_in_range( version:vers, test_version:"4.0", test_version2:"4.0.60309.0" ) ) {
  report = report_fixed_ver( installed_version:vers, vulnerable_range:"4.0 - 4.0.60309.0", install_path:path );
  security_message( port:0, data:report );
  exit( 0 );
}

exit( 99 );