Vulnerabilities > CVE-2015-1641 - Out-of-bounds Write vulnerability in Microsoft products

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

include("compat.inc");

if (description)
{
  script_id(82767);
  script_version("1.10");
  script_cvs_date("Date: 2019/11/22");

  script_cve_id("CVE-2015-1639", "CVE-2015-1641");
  script_bugtraq_id(73991, 73995);
  script_xref(name:"MSFT", value:"MS15-033");
  script_xref(name:"IAVA", value:"2015-A-0090");
  script_xref(name:"MSKB", value:"3051737");

  script_name(english:"MS15-033: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3048019)");
  script_summary(english:"Checks the version of Microsoft Office.");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote Mac OS X host is affected by
multiple remote code execution vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Mac OS X host has a version of Microsoft Word installed
that is affected by multiple vulnerabilities :

  - A cross-site scripting vulnerability exists due to
    improper sanitization of HTML strings. A remote attacker
    can exploit this issue by convincing a user to open a
    file or visit a website containing specially crafted
    content, resulting in execution of arbitrary code in the
    context of the current user. (CVE-2015-1639)

  - A remote code execution vulnerability exists due to
    improper handling rich text format files in memory. A
    remote attacker can exploit this vulnerability by
    convincing a user to open a specially crafted file using
    the affected software, resulting in execution of
    arbitrary code in the context of the current user.
    (CVE-2015-1641)");
  script_set_attribute(attribute:"see_also", value:"https://technet.microsoft.com/library/security/ms15-033");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a patch for Office for Mac 2011.");
  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:H/RL:OF/RC:C");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/04/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/04/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/04/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office:2011::mac");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word_for_mac:2011");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/a:microsoft:outlook_for_mac_for_office_365");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"MacOS X Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/MacOSX/Version");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("ssh_func.inc");
include("macosx_func.inc");


if(sshlib::get_support_level() >= sshlib::SSH_LIB_SUPPORTS_COMMANDS)
  enable_ssh_wrappers();
else disable_ssh_wrappers();

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

os = get_kb_item("Host/MacOSX/Version");
if (!os) audit(AUDIT_OS_NOT, "Mac OS X");

# Gather version info.
info = '';
installs = make_array();

prod = 'Office for Mac 2011';
plist = "/Applications/Microsoft Office 2011/Office/MicrosoftComponentPlugin.framework/Versions/14/Resources/Info.plist";
cmd =  'cat \'' + plist + '\' | ' +
  'grep -A 1 CFBundleShortVersionString | ' +
  'tail -n 1 | ' +
  'sed \'s/.*string>\\(.*\\)<\\/string>.*/\\1/g\'';
version = exec_cmd(cmd:cmd);
if (version && version =~ "^[0-9]+\.")
{
  version = chomp(version);
  if (version !~ "^14\.") exit(1, "Failed to get the version for "+prod+" - '"+version+"'.");

  installs[prod] = version;

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

  fixed_version = '14.4.9';
  fix = split(fixed_version, sep:'.', keep:FALSE);
  for (i=0; i<max_index(fix); i++)
    fix[i] = int(fix[i]);

  for (i=0; i<max_index(fix); i++)
    if ((ver[i] < fix[i]))
    {
      info +=
        '\n  Product           : ' + prod +
        '\n  Installed version : ' + version +
        '\n  Fixed version     : ' + fixed_version + '\n';
      break;
    }
    else if (ver[i] > fix[i])
      break;
}

# Report findings.
if (info)
{
  set_kb_item(name:"www/0/XSS", value:TRUE);
  if (report_verbosity > 0) security_hole(port:0, extra:info);
  else security_hole(0);

  exit(0);
}
else
{
  if (max_index(keys(installs)) == 0) exit(0, "Office for Mac 2011 is not installed.");
  else
  {
    msg = 'The host has ';
    foreach prod (sort(keys(installs)))
      msg += prod + ' ' + installs[prod] + ' and ';
    msg = substr(msg, 0, strlen(msg)-1-strlen(' and '));

    msg += ' installed and thus is not affected.';

    exit(0, msg);
  }
}

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

include("compat.inc");

if (description)
{
  script_id(82769);
  script_version("1.14");
  script_cvs_date("Date: 2018/07/30 15:31:33");

  script_cve_id(
    "CVE-2015-1641",
    "CVE-2015-1649",
    "CVE-2015-1650",
    "CVE-2015-1651"
  );
  script_bugtraq_id(73991, 74007, 74011, 74012);
  script_xref(name:"MSFT", value:"MS15-033");
  script_xref(name:"MSKB", value:"2965284");
  script_xref(name:"MSKB", value:"2965236");
  script_xref(name:"MSKB", value:"2553428");
  script_xref(name:"MSKB", value:"2965289");
  script_xref(name:"MSKB", value:"2965210");
  script_xref(name:"MSKB", value:"2553164");
  script_xref(name:"MSKB", value:"2965238");
  script_xref(name:"MSKB", value:"2965224");
  script_xref(name:"MSKB", value:"2965215");
  script_xref(name:"MSKB", value:"2965306");
  script_xref(name:"IAVA", value:"2015-A-0090");

  script_name(english:"MS15-033: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3048019)");
  script_summary(english:"Checks the Office, SharePoint, and OWA version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple remote code execution
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host has a version of Microsoft Office, Office
Compatibility Pack, Microsoft Word, Microsoft Word Viewer, SharePoint
Server, or Microsoft Office Web Apps installed that is affected by
multiple remote code execution vulnerabilities :

  - A remote code execution vulnerability exists due to
    improper handling rich text format files in memory. A
    remote attacker can exploit this vulnerability by
    convincing a user to open a specially crafted file using
    the affected software, resulting in execution of
    arbitrary code in the context of the current user.
    (CVE-2015-1641)

  - Multiple use-after-free errors exist due to improper
    parsing specially crafted Office files. A remote
    attacker can exploit these errors by convincing a user
    to open a specially crafted file using the affected
    software, resulting in execution of arbitrary code in
    the context of the current user. (CVE-2015-1649,
    CVE-2015-1650, CVE-2015-1651)");
  script_set_attribute(attribute:"see_also", value:"https://technet.microsoft.com/library/security/ms15-033");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Office 2010, Word 2007,
2010, 2013, Office Compatibility Pack, Microsoft Word Viewer,
SharePoint Server, and Office Web Apps.");
  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:H/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/04/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/04/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/04/14");

  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_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_compatibility_pack");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint_server");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_web_apps");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2015-2018 Tenable Network Security, Inc.");

  script_dependencies("office_installed.nasl", "microsoft_sharepoint_installed.nbin", "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");

global_var bulletin, vuln;

function get_ver()
{
  local_var fh, path, rc, share, ver;

  path = _FCT_ANON_ARGS[0];

  share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:path);

  rc = NetUseAdd(share:share);
  if (rc != 1)
  {
    NetUseDel();
    audit(AUDIT_SHARE_FAIL, share);
  }

  ver = NULL;
  path = ereg_replace(string:path, pattern:"^[A-Za-z]:(.*)", replace:'\\1\\');

  fh = CreateFile(
    file               : path,
    desired_access     : GENERIC_READ,
    file_attributes    : FILE_ATTRIBUTE_NORMAL,
    share_mode         : FILE_SHARE_READ,
    create_disposition : OPEN_EXISTING
  );
  if (!isnull(fh))
  {
    ver = GetFileVersion(handle:fh);
    ver = join(ver, sep:".");
    CloseFile(handle:fh);
  }

  NetUseDel(close:FALSE);

  return ver;
}

function check_vuln(fix, kb, name, path, ver)
{
  local_var info;

  if (isnull(ver))
    ver = get_ver(path);

  if (isnull(ver) || ver_compare(ver:ver, fix:fix, strict:FALSE) >= 0)
    return 0;

  info =
    '\n  Product           : ' + name +
    '\n  Path              : ' + path +
    '\n  Installed version : ' + ver +
    '\n  Fixed version     : ' + fix +
    '\n';
  hotfix_add_report(info, bulletin:bulletin, kb:kb);

  vuln = TRUE;
}

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

# Get path information for Windows.
windir = hotfix_get_systemroot();
if (isnull(windir)) exit(1, "Failed to determine the location of %windir%.");

bulletin = 'MS15-033';
kbs = make_list(
  2965284, # Word 2007
  2965236, # Office 2010
  2553428, # Word 2010
  2965289, # Word Viewer
  2965210, # Office Compat Pack
  2553164, # SharePoint 2010 Word Automation Services
  2965238, # Office Web Apps 2010
  2965224, # Word 2013
  2965215, # SharePoint 2013 Word Automation Services
  2965306  # Office Web Apps 2013
);

if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

get_kb_item_or_exit("SMB/Registry/Enumerated", exit_code:1);

# Connect to the registry.
registry_init();
hklm = registry_hive_connect(hive:HKEY_LOCAL_MACHINE, exit_on_fail:TRUE);

# Get path information for SharePoint Server 2010.
sps_2010_path = get_registry_value(
  handle : hklm,
  item   : "SOFTWARE\Microsoft\Office Server\14.0\InstallPath"
);

# Get the path information for SharePoint Server 2013
sps_2013_path = get_registry_value(
  handle : hklm,
  item   : "SOFTWARE\Microsoft\Office Server\15.0\InstallPath"
);

owa_2013_path = get_registry_value(
  handle : hklm,
  item   : "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Office15.WacServer\InstallLocation"
);

# Close connection to registry.
RegCloseKey(handle:hklm);
close_registry(close:FALSE);
# Get path information for Office Web Apps.
owa_2010_path = sps_2010_path;

######################################################################
# Office Web Apps 2010 SP1 / SP2
######################################################################
if (owa_2010_path)
{
  check_vuln(
    name : "Office Web Apps 2010",
    kb   : "2965238",
    path : owa_2010_path + "WebServices\ConversionService\Bin\Converter\sword.dll",
    fix  : "14.0.7147.5000"
  );
}

######################################################################
# Office Web Apps 2013 SP1 / SP2
######################################################################
if (owa_2013_path)
{
  check_vuln(
    name : "Office Web Apps 2013",
    kb   : "2965306",
    path : owa_2013_path + "\WordConversionService\Bin\Converter\sword.dll",
    fix : "15.0.4711.1001"
  );
}

######################################################################
# SharePoint Server 2010 SP2
######################################################################
if (sps_2010_path)
{
  check_vuln(
    name : "Office SharePoint Server 2010",
    kb   : "2553164",
    path : sps_2010_path + "WebServices\WordServer\Core\sword.dll",
    fix  : "14.0.7147.5000"
  );
}

######################################################################
# SharePoint Server 2013 SP2
######################################################################
if (sps_2013_path)
{
  check_vuln(
    name : "SharePoint Server 2013 Word Automation Services",
    kb   : "2965215",
    path : sps_2013_path + "WebServices\ConversionServices\sword.dll",
    fix  : "15.0.4711.1000"
  );
}

# 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 = "";

    # Word 2013
    if (version =~ "^15\." && ver_compare(ver:version, fix:'15.0.4711.1001') < 0)
    {
      office_sp = get_kb_item("SMB/Office/2013/SP");
      if (!isnull(office_sp) && (office_sp <= 1))
      {
        info =
          '\n  Product           : Word 2013' +
          '\n  File              : ' + path +
          '\n  Installed version : ' + version +
          '\n  Fixed version     : 15.0.4711.1001' + '\n';
        kb = "2965224";
      }
    }

    # Word 2010 SP2
    if (version =~ "^14\." && ver_compare(ver:version, fix:'14.0.7147.5000') < 0)
    {
      office_sp = get_kb_item("SMB/Office/2010/SP");
      if (!isnull(office_sp) && (office_sp == 2))
      {
        info =
          '\n  Product           : Word 2010' +
          '\n  File              : ' + path +
          '\n  Installed version : ' + version +
          '\n  Fixed version     : 14.0.7147.5000' + '\n';
        kb = "2553428";
      }
    }

    # Word 2007 SP3
    if (version =~ "^12\." && ver_compare(ver:version, fix:'12.0.6720.5000') < 0)
    {
      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     : 12.0.6720.5000' + '\n';
        kb = "2965284";
      }
    }

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

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

    if (ver_compare(ver:version, fix:'11.0.8417.0') < 0)
    {
      info =
        '\n  Product           : Word Viewer' +
        '\n  File              : ' + path +
        '\n  Installed version : ' + version +
        '\n  Fixed version     : 11.0.8417.0' + '\n';
      kb = "2965289";
    }

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

# Ensure Office is installed
office_vers = hotfix_check_office_version();
if (!isnull(office_vers))
{
  # Ensure we can get common files directory
  commonfiles = hotfix_get_officecommonfilesdir(officever:"14.0");
  if (commonfiles)
  {
    # Ensure share is accessible
    share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:commonfiles);
    if (is_accessible_share(share:share))
    {
      # Office 2010
      if (office_vers["14.0"])
      {
        office_sp = get_kb_item("SMB/Office/2010/SP");
        if (!isnull(office_sp) && office_sp == 2)
        {
          path = get_kb_item("SMB/Office/Word/14.0/Path");
          if (!path) path = get_kb_item("SMB/Office/Excel/14.0/Path");
          if (!path) path = get_kb_item("SMB/Office/PowerPoint/14.0/Path");
          if (path)
          {
            old_report = hotfix_get_report();
            check_file = "Wwlib.dll";

            if (hotfix_check_fversion(path:path, file:check_file, version:"14.0.7147.5000", min_version:"14.0.0.0") == 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 = str_replace(find:"//", replace:"/", string:kb_name);
              version = get_kb_item(kb_name);

              info =
                '\n  Product           : Microsoft Office 2010' +
                '\n  File              : ' + path + '\\' + check_file +
                '\n  Installed version : ' + version +
                '\n  Fixed version     : 14.0.7147.5000' + '\n';

              hcf_report = '';
              hotfix_add_report(old_report + info, bulletin:bulletin, kb:"2965236");
              vuln = TRUE;
            }
          }
        }
      }

      # Office 2007 SP3
      if (office_vers["12.0"])
      {
        office_sp = get_kb_item("SMB/Office/2007/SP");
        if (!isnull(office_sp) && office_sp == 3)
        {
          path = commonfiles + "\Microsoft Shared\Office12";
          old_report = hotfix_get_report();
          check_file = "Winword.exe";

          if (hotfix_check_fversion(path:path, file:check_file, version:"12.0.6720.5000", min_version:"12.0.0.0") == 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:"/"));
            version = get_kb_item(kb_name);

            info =
              '\n  Product           : Microsoft Office 2007 SP3' +
              '\n  File              : ' + path + '\\' + check_file +
              '\n  Installed version : ' + version +
              '\n  Fixed version     : 12.0.6720.5000\n';

            hcf_report = '';
            hotfix_add_report(old_report + info, bulletin:bulletin, kb:"2965284");
            vuln = TRUE;
          }
        }
      }
    }
  }
}

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:"12.0.6720.5000", min_version:"12.0.0.0") == 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     : 12.0.6720.5000' + '\n';

        hcf_report = '';
        hotfix_add_report(old_report + info, bulletin:bulletin, kb:"2965210");
        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');
}