Microsoft .NET Framework 'RC4' Information Disclosure Vulnerability (2960358)

# SPDX-FileCopyrightText: 2014 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.804587");
  script_version("2026-04-28T06:28:06+0000");
  script_tag(name:"cvss_base", value:"9.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"2026-04-28 06:28:06 +0000 (Tue, 28 Apr 2026)");
  script_tag(name:"creation_date", value:"2014-05-15 15:17:33 +0530 (Thu, 15 May 2014)");
  script_name("Microsoft .NET Framework 'RC4' Information Disclosure Vulnerability (2960358)");

  script_tag(name:"summary", value:"This host is missing an important security update according to
  Microsoft Security Advisory 2960358.");

  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 RC4 encryption algorithm is used in Transport
  Layer Security (TLS).");

  script_tag(name:"impact", value:"Successful exploitation could allow an attacker to perform man-in-the-middle
  attacks and recover plaintext from encrypted sessions.");

  script_tag(name:"affected", value:"Microsoft .NET Framework 3.5, 3.5.1, 4.0 and 4.5 and 4.5.X.");

  script_tag(name:"solution", value:"The vendor has released updates. Please see the references for more information.");

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

  script_xref(name:"URL", value:"https://support.microsoft.com/kb/2960358");
  script_xref(name:"URL", value:"https://technet.microsoft.com/en-us/library/security/2960358");
  script_category(ACT_GATHER_INFO);
  script_tag(name:"qod_type", value:"executable_version");
  script_copyright("Copyright (C) 2014 Greenbone AG");
  script_family("Windows");
  script_dependencies("smb_reg_service_pack.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("SMB/WindowsVersion");

  exit(0);
}

include("smb_nt.inc");
include("secpod_reg.inc");
include("version_func.inc");
include("secpod_smb_func.inc");

if(hotfix_check_sp(win7:2, win7x64:2, win2008r2:2, win8:1,
                   win8_1:1, win8_1x64:1, win2012:1) <= 0){
  exit(0);
}

key = "SOFTWARE\Microsoft\ASP.NET\";
if(!registry_key_exists(key:key)){
  exit(0);
}

foreach item (registry_enum_keys(key:key))
{
  path = registry_get_sz(key:key + item, item:"Path");
  if(path && "\Microsoft.NET\Framework" >< path)
  {
    dllVer = fetch_file_version(sysPath:path, file_name:"system.dll");
    if(dllVer)
    {
     ## .NET Framework 4.5.1 and 4.5.2 on Windows 8.1, and Windows Server 2012 R2
     ## Currently not supporting for Windows Server 2012 R2
     if((hotfix_check_sp(win8_1:1, win8_1x64:1) > 0) &&
       (version_in_range(version:dllVer, test_version:"4.0.30319.34000", test_version2:"4.0.30319.34110")||
        version_in_range(version:dllVer, test_version:"4.0.30319.36000", test_version2:"4.0.30319.36117")))
      {
        security_message( port: 0, data: "The target host was found to be vulnerable" );
        exit(0);
      }

      ## NET Framework 4.5.1 and 4.5.2 on Windows 8, and Windows Server 2012
      if((hotfix_check_sp(win8:1, win2012:1) > 0) &&
         (version_in_range(version:dllVer, test_version:"4.0.30319.34000", test_version2:"4.0.30319.34110")||
          version_in_range(version:dllVer, test_version:"4.0.30319.36000", test_version2:"4.0.30319.36112")))
      {
        security_message( port: 0, data: "The target host was found to be vulnerable" );
        exit(0);
      }

      ## .NET Framework 4.5.1 on Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1
      ## .NET Framework 4.5.2 on Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1
      ##  No file info is there
      if((hotfix_check_sp(win7:2, win7x64:2, win2008r2:2) > 0) &&
         (version_in_range(version:dllVer, test_version:"4.0.30319.34000", test_version2:"4.0.30319.34113")||
          version_in_range(version:dllVer, test_version:"4.0.30319.36000", test_version2:"4.0.30319.36116")))
      {
        security_message( port: 0, data: "The target host was found to be vulnerable" );
        exit(0);
      }

      ## .NET Framework 4 on Windows 7 and Windows Server 2008 R2
      if((hotfix_check_sp(win7:2, win7x64:2, win2008:3, win2008r2:2) > 0) &&
        (version_in_range(version:dllVer, test_version:"4.0.30319.1000", test_version2:"4.0.30319.1023")||
         version_in_range(version:dllVer, test_version:"4.0.30319.2000", test_version2:"4.0.30319.2037")))
      {
        security_message( port: 0, data: "The target host was found to be vulnerable" );
        exit(0);
      }

      ##.NET Framework 3.5.1 on Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1
      if((hotfix_check_sp(win7:2, win7x64:2, win2008r2:2) > 0) &&
         (version_in_range(version:dllVer, test_version:"2.0.50727.5400", test_version2:"2.0.50727.5483")||
          version_in_range(version:dllVer, test_version:"2.0.50727.7000", test_version2:"2.0.50727.7057")))
      {
        security_message( port: 0, data: "The target host was found to be vulnerable" );
        exit(0);
      }

      ##.NET Framework 3.5 on Windows 8 and Windows Server 2012
      if((hotfix_check_sp(win8:1, win2012:1) > 0) &&
         (version_in_range(version:dllVer, test_version:"2.0.50727.6000", test_version2:"2.0.50727.6416")||
          version_in_range(version:dllVer, test_version:"2.0.50727.7000", test_version2:"2.0.50727.7057")))
      {
        security_message( port: 0, data: "The target host was found to be vulnerable" );
        exit(0);
      }

      ## .NET Framework 3.5 on Windows 8.1 and Windows Server 2012 R2
      ## Currently not supporting for Windows Server 2012 R2
      if((hotfix_check_sp(win8_1:1, win8_1x64:1) > 0) &&
       (version_in_range(version:dllVer, test_version:"2.0.50727.8000", test_version2:"2.0.50727.8003")||
        version_in_range(version:dllVer, test_version:"2.0.50727.8600", test_version2:"2.0.50727.8606")))
      {
        security_message( port: 0, data: "The target host was found to be vulnerable" );
        exit(0);
      }
    }
  }
}