WebWasher Remote ARJ Decoder Malformed Archive Handling DoS

#
#  (C) Tenable Network Security
#


include("compat.inc");

if (description)
{
  script_id(21749);
  script_version("1.12");
 script_cvs_date("Date: 2018/08/07 16:46:51");

  script_bugtraq_id(18521);

  script_name(english:"WebWasher Remote ARJ Decoder Malformed Archive Handling DoS");
  script_summary(english:"Checks version of WebWasher");

 script_set_attribute(attribute:"synopsis", value:
"The remote Windows host has an application that is affected by a
denial of service vulnerability.");
 script_set_attribute(attribute:"description", value:
"According to its version, the version of WebWasher installed on the
remote host is affected by a denial of service vulnerability when
handling a specially crafted ARJ file.");
 script_set_attribute(attribute:"solution", value:"Upgrade to WebWasher 5.3.0 build 2252 or later.");
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
 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:"plugin_publication_date", value:"2006/06/24");

script_set_attribute(attribute:"plugin_type", value:"local");
script_end_attributes();


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

  script_copyright(english:"This script is Copyright (C) 2006-2018 Tenable Network Security, Inc.");

  script_dependencies("smb_hotfixes.nasl");
  script_require_keys("SMB/Registry/Enumerated");
  script_require_ports(139, 445);

  exit(0);
}


include("smb_func.inc");
include("audit.inc");


# Connect to the appropriate share.
if (!get_kb_item("SMB/Registry/Enumerated")) exit(0);

name    =  kb_smb_name();
port    =  kb_smb_transport();
login   =  kb_smb_login();
pass    =  kb_smb_password();
domain  =  kb_smb_domain();



if(! smb_session_init()) audit(AUDIT_FN_FAIL, 'smb_session_init');
rc = NetUseAdd(login:login, password:pass, domain:domain, share:"IPC$");
if (rc != 1)
{
  NetUseDel();
  exit(0);
}


# Connect to remote registry.
hklm = RegConnectRegistry(hkey:HKEY_LOCAL_MACHINE);
if (isnull(hklm))
{
  NetUseDel();
  exit(0);
}


# Get some info about the install.
path = NULL;
key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Webwasher CSM";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
  item = RegQueryValue(handle:key_h, item:"UninstallString");
  if (!isnull(item))
  {
    if ("\UNWISE" >< item[1])
      path = ereg_replace(pattern:"^([^ ]*)\\UNWISE\.EXE.*$", replace:"\1", string:item[1]);
  }

  RegCloseKey(handle:key_h);
}


# If it is...
if (path)
{
  # Determine its version from the executable itself.
  share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:path);
  exe =  ereg_replace(pattern:"^[A-Za-z]:(.*)", replace:"\1\bin\WebWasherCSM.exe", string:path);
  NetUseDel(close:FALSE);

  rc = NetUseAdd(login:login, password:pass, domain:domain, share:share);
  if (rc != 1)
  {
    NetUseDel();
    exit(0);
  }

  fh = CreateFile(
    file:exe,
    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);
    CloseFile(handle:fh);
  }

  # There's a problem if the version is before 5.3.0.2252.
  if (!isnull(ver))
  {
    if (
      ver[0] < 5 ||
      (
        ver[0] == 5 &&
        (
          ver[1] < 3 ||
          (ver[1] == 3 && ver[2] == 0 && ver[3] < 2252)
        )
      )
    ) security_warning(kb_smb_transport());
  }
}


# Clean up.
RegCloseKey(handle:hklm);
NetUseDel();