Microsoft Lync Attendee Multiple Remote Code Execution Vulnerabilities (KB4025866 and KB4025867)

# SPDX-FileCopyrightText: 2017 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("1.3.6.1.4.1.25623.1.0.811327");
  script_version("2026-04-28T06:28:06+0000");
  script_cve_id("CVE-2017-8676", "CVE-2017-8695", "CVE-2017-8696");
  script_tag(name:"cvss_base", value:"7.6");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/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:"severity_vector", value:"CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2017-09-21 18:47:00 +0000 (Thu, 21 Sep 2017)");
  script_tag(name:"creation_date", value:"2017-09-13 15:57:23 +0530 (Wed, 13 Sep 2017)");
  script_name("Microsoft Lync Attendee Multiple Remote Code Execution Vulnerabilities (KB4025866 and KB4025867)");

  script_tag(name:"summary", value:"This host is missing a critical security
  updates according to Microsoft KB4025866 and KB4025867.");

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

  script_tag(name:"insight", value:"Multiple flaws exist due to the windows font
  library which improperly handles specially crafted embedded fonts.");

  script_tag(name:"impact", value:"Successful exploitation will allow an
  attacker to execute arbitrary code on the affected system.");

  script_tag(name:"affected", value:"Microsoft Lync Attendee 2010.");

  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_tag(name:"qod_type", value:"executable_version");

  script_xref(name:"URL", value:"https://support.microsoft.com/en-us/help/4025867");
  script_xref(name:"URL", value:"https://support.microsoft.com/en-us/help/4025866");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("secpod_ms_lync_detect_win.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("MS/Lync/Attendee/Ver", "MS/Lync/Attendee/path");
  script_xref(name:"URL", value:"https://support.microsoft.com/en-us/help/4025867");
  exit(0);
}

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

## For Microsoft Lync 2010 Attendee (admin level install)
## For Microsoft Lync 2010 Attendee (user level install)
lyncPath = get_kb_item("MS/Lync/Attendee/path");
if(lyncPath)
{
  dllVer = fetch_file_version(sysPath:lyncPath, file_name:"Rtmpltfm.dll");
  if(dllVer)
  {
    if(version_in_range(version:dllVer, test_version:"4.0", test_version2:"4.0.7577.4539"))
    {

      report = 'File checked:     ' + lyncPath + "Rtmpltfm.dll" + '\n' +
               'File version:     ' + dllVer  + '\n' +
               'Vulnerable range: 4.0 - 4.0.7577.4539' + '\n' ;
      security_message(data:report);
      exit(0);
    }
  }
}