Microsoft Lync Server Remote Code Execution Vulnerability (2834695)

# SPDX-FileCopyrightText: 2013 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("1.3.6.1.4.1.25623.1.0.901219");
  script_version("2026-04-28T06:28:06+0000");
  script_cve_id("CVE-2013-1302");
  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:"2013-05-15 17:48:13 +0530 (Wed, 15 May 2013)");
  script_name("Microsoft Lync Server Remote Code Execution Vulnerability (2834695)");
  script_xref(name:"URL", value:"http://support.microsoft.com/kb/2827753");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/59791");
  script_xref(name:"URL", value:"http://support.microsoft.com/kb/2827750");
  script_xref(name:"URL", value:"https://technet.microsoft.com/en-us/security/bulletin/ms13-041");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2013 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("smb_reg_service_pack.nasl", "secpod_ms_lync_server_detect_win.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("MS/Lync/Server/Name", "MS/Lync/Server/path");

  script_tag(name:"impact", value:"Successful exploitation could allow an attacker could execute arbitrary
  code in the context of the current user by sharing specially crafted content, such as a file or a program,
  as a presentation in a Lync or  Communicator session and then convince a user to view or share the
  specially crafted content.");

  script_tag(name:"affected", value:"Microsoft Lync Server 2013 (Web Components Server).");

  script_tag(name:"insight", value:"A use-after-free error within the Lync control can be exploited to
  dereference already freed memory.");

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

  script_tag(name:"summary", value:"This host is missing an important security update according to
  Microsoft Bulletin MS13-041.");

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

  exit(0);
}

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

ms_lync_name = get_kb_item("MS/Lync/Server/Name");

if("Microsoft Lync Server 2013" >< ms_lync_name)
{
  ms_lync_path = get_kb_item("MS/Lync/Server/path");
  if(ms_lync_path)
  {
    fname = "\Web Components\Autodiscover\Ext\Bin\microsoft.rtc.internal.autodiscover.dll";

    dll_ver = fetch_file_version(sysPath:ms_lync_path, file_name:fname);
    if(dll_ver)
    {
      if(version_in_range(version:dll_ver, test_version:"5.0", test_version2:"5.0.8308.300"))
      {
        report = report_fixed_ver(installed_version:dll_ver, vulnerable_range:"5.0 - 5.0.8308.300", install_path:ms_lync_path);
        security_message(port: 0, data: report);
        exit(0);
      }
    }
  }
}