MS14-034: Vulnerability in Microsoft Word Could Allow Remote Code Execution (2969261)

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(74426);
  script_version("1.9");
  script_cvs_date("Date: 2018/11/15 20:50:31");

  script_cve_id("CVE-2014-2778");
  script_bugtraq_id(67896);
  script_xref(name:"MSFT", value:"MS14-034");
  script_xref(name:"MSKB", value:"2880513");
  script_xref(name:"MSKB", value:"2880515");

  script_name(english:"MS14-034: Vulnerability in Microsoft Word Could Allow Remote Code Execution (2969261)");
  script_summary(english:"Checks Word 2007 version");

  script_set_attribute(attribute:"synopsis", value:"The remote host is affected by a memory corruption vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host has a version of Microsoft Word or Office
Compatibility Pack that is affected by an unspecified memory
corruption vulnerability. By tricking a user into opening a specially
crafted file, it may be possible for a remote attacker to take
complete control of the system or execute arbitrary code.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2014/ms14-034");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Office 2007 and Office
Compatibility Pack.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/06/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/06/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_compatibility_pack");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2014-2018 Tenable Network Security, Inc.");

  script_dependencies("office_installed.nasl", "smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

include("audit.inc");
include("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("smb_reg_query.inc");
include("misc_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS14-034';
kbs = make_list(
  2880513, # Office 2007 Compatibility Pack
  2880515  # Word 2007
);
if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

vuln = FALSE;

# Word
kb = "";
installs = get_kb_list("SMB/Office/Word/*/ProductPath");
if (!isnull(installs))
{
  foreach install (keys(installs))
  {
    version = install - 'SMB/Office/Word/' - '/ProductPath';
    path = installs[install];
    info = "";

    ver = split(version, sep:'.', keep:FALSE);
    for (i=0; i<max_index(ver); i++)
    ver[i] = int(ver[i]);

    # Word 2007
    if (
      ver[0] == 12 && ver[1] == 0 &&
      (
        ver[2] < 6700 ||
        (ver[2] == 6700 && ver[3] < 5000)
      )
    )
    {
      office_sp = get_kb_item("SMB/Office/2007/SP");
      if (!isnull(office_sp) && office_sp == 3)
      {
        info =
          '\n  Product           : Word 2007 SP3' +
          '\n  File              : ' + path +
          '\n  Installed version : ' + version +
          '\n  Fixed version     : 12.0.6700.5000' + '\n';
        kb = "2880515";
      }
    }

    if (info)
    {
      hotfix_add_report(info, bulletin:bulletin, kb:kb);
      vuln = TRUE;
    }
  }
}

# Office Compatibility Pack
version = '';
installs = get_kb_list("SMB/Office/WordCnv/*/ProductPath");
if (!isnull(installs))
{
  foreach install (keys(installs))
  {
    version = install - 'SMB/Office/WordCnv/' - '/ProductPath';
    path = installs[install];

    if (!isnull(path))
    {
      share = hotfix_path2share(path:path);
      if (!is_accessible_share(share:share))
        audit(AUDIT_SHARE_FAIL, share);

      path = path - '\\Wordconv.exe';

      old_report = hotfix_get_report();
      check_file = "wordcnv.dll";

      if (hotfix_check_fversion(path:path, file:check_file, version:"12.0.6700.5000", min_version:"12.0.6500.5000") == HCF_OLDER)
      {
        file = ereg_replace(pattern:"^[A-Za-z]:(.*)", string:path, replace:"\1\" + check_file);
        kb_name = "SMB/FileVersions/"+tolower(share-'$')+tolower(str_replace(string:file, find:"\", replace:"/"));
        kb_name = ereg_replace(pattern:"//"+check_file, replace:"/"+check_file, string:kb_name);
        version = get_kb_item(kb_name);

        info =
          '\n  Product           : Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats' +
          '\n  File              : ' + path + '\\' + check_file +
          '\n  Installed version : ' + version +
          '\n  Fixed version     : 12.0.6700.5000' + '\n';

        hcf_report = '';
        hotfix_add_report(old_report + info, bulletin:bulletin, kb:"2880513");
        vuln = TRUE;
      }
    }
  }
}
if (!version)
{
  # Additional check if registry key is missing
  path = hotfix_get_officecommonfilesdir(officever:"12.0") + "\Microsoft Office\Office12";

  kb = "2880513";
  if (hotfix_is_vulnerable(file:"wordcnv.dll", version:"12.0.6700.5000", min_version:"12.0.6609.1000", path:path, bulletin:bulletin, kb:kb)) vuln = TRUE;
}

if (vuln)
{
  set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}