IBM eGatherer ActiveX RunEgatherer Function Overflow

#
#  (C) Tenable Network Security
#


include("compat.inc");

if (description)
{
  script_id(22253);
  script_version("1.21");
 script_cvs_date("Date: 2018/11/15 20:50:26");

  script_cve_id("CVE-2006-4221");
  script_bugtraq_id(19554);

  script_name(english:"IBM eGatherer ActiveX RunEgatherer Function Overflow");
  script_summary(english:"Checks version of IBM eGatherer ActiveX control");

 script_set_attribute(attribute:"synopsis", value:
"The remote Windows host has an ActiveX control that is affected by a
buffer overflow vulnerability.");
 script_set_attribute(attribute:"description", value:
"The Windows remote host contains the eGatherer ActiveX control, which
is typically installed by default on IBM workstations and laptops and
used for automatically locating drivers and updates on IBM / Lenovo
support sites.

The version of this ActiveX control on the remote host reportedly
contains a stack-based buffer overflow in the 'RunEgatherer' function.
Exploitation of this issue may allow an unauthenticated remote
attacker to execute arbitrary code subject to the user's privileges.");
 script_set_attribute(attribute:"see_also", value:"https://www.beyondtrust.com/resources/blog/research/");
 script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2006/Aug/448" );
 script_set_attribute(attribute:"solution", value:"Upgrade to version 3.20.284.0 or later of the ActiveX control.");
 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:"2006/08/16");
 script_set_attribute(attribute:"patch_publication_date", value:"2006/08/16");
 script_set_attribute(attribute:"plugin_publication_date", value:"2006/08/21");

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();
#if (!get_port_state(port)) exit(0);
login   =  kb_smb_login();
pass    =  kb_smb_password();
domain  =  kb_smb_domain();

#soc = open_sock_tcp(port);
#if (!soc) exit(0);

#session_init(socket:soc, hostname:name);
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);
}


# Check whether it's installed.
clid = "74FFE28D-2378-11D5-990C-006094235084";
key = "SOFTWARE\Classes\CLSID\{" + clid +  "}\InprocServer32";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
file = NULL;
if (!isnull(key_h))
{
  value = RegQueryValue(handle:key_h, item:NULL);
  if (!isnull(value)) file = value[1];

  RegCloseKey(handle:key_h);
}


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

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

  fh = CreateFile(
    file:dll,
    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);
  }

  # Check the version number.
  if (
    !isnull(ver) &&
    (
      ver[0] < 3 ||
      (
        ver[0] == 3 &&
        (
          ver[1] < 20 ||
          (ver[1] == 20 && ver[2] < 284)
        )
      )
    )
  )
  {
    version = string(ver[0], ".", ver[1], ".", ver[2], ".", ver[3]);

    report = string(
      "\n\n",
      "Plugin output :\n",
      "\n",
      "Version ", version, " of the control is installed as \n",
      "\n",
      "  ", file, "\n"
    );
    security_hole(port:port, extra:report);
  }
}


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