Novell File Reporter Engine RECORD Element Tag Parsing Overflow (credentialed check)

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


include("compat.inc");


if (description)
{
  script_id(55471);
  script_version("1.10");
  script_cvs_date("Date: 2018/11/15 20:50:27");

  script_cve_id("CVE-2011-2220");
  script_bugtraq_id(48470);
  script_xref(name:"Secunia", value:"45065");

  script_name(english:"Novell File Reporter Engine RECORD Element Tag Parsing Overflow (credentialed check)");
  script_summary(english:"Checks file version number of NFREngine.exe");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host contains a service that is susceptible to a
remote buffer overflow attack.");
  script_set_attribute(attribute:"description", value:
"The version of Novell File Reporter (NFR) Engine installed on the
remote Windows host is earlier than 1.0.2.53. As such, it reportedly
has a flaw in its handling of HTTP requests to the TCP port used to
communicate with the NFR Agent, normally 3035. Specifically, the
application fails to check the size of user-supplied strings before
using them in a call to memcpy when parsing tags inside the '<RECORD>'
element.

An unauthenticated, remote attacker with access to the service can
leverage this vulnerability to corrupt the process thread's stack,
possibly resulting in arbitrary code execution under the context of
the SYSTEM account.");
  script_set_attribute(attribute:"see_also", value:"https://www.zerodayinitiative.com/advisories/ZDI-11-227/");
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.securityfocus.com/archive/1/518632/30/0/threaded"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://download.novell.com/Download?buildid=leLxi7tQACs~"
  );
  script_set_attribute(attribute:"solution", value:"Apply the security patch referenced in Novell's advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/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:"exploit_framework_core", value:"true");
 script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
 script_set_attribute(attribute:"canvas_package", value:'White_Phosphorus');

  script_set_attribute(attribute:"vuln_publication_date", value:"2011/06/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/06/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/06/30");

  script_set_attribute(attribute:"cpe", value:"cpe:/a:novell:file_reporter");
  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) 2011-2018 Tenable Network Security, Inc.");

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

  exit(0);
}


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


get_kb_item_or_exit("SMB/Registry/Enumerated");


# Unless we're paranoid, make sure the service is running.
if (report_paranoia < 2)
{
  status = get_kb_item_or_exit("SMB/svc/NFREngineSvc");
  if (status != SERVICE_ACTIVE)
    exit(0, "The Novell File Reporter Engine service is installed but not active.");
}

# Connect to the appropriate share.
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');

# Connect to remote registry.
rc = NetUseAdd(login:login, password:pass, domain:domain, share:"IPC$");
if (rc != 1)
{
  NetUseDel();
  audit(AUDIT_SHARE_FAIL,"IPC$");
}

hklm = RegConnectRegistry(hkey:HKEY_LOCAL_MACHINE);
if (isnull(hklm))
{
  NetUseDel();
  audit(AUDIT_REG_FAIL);
}


# Find where it's installed.
path = NULL;

key = "SOFTWARE\Novell\File Reporter\Engine";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
  value = RegQueryValue(handle:key_h, item:"InstallPath");
  if (!isnull(value))
  {
    path = value[1];
    path = ereg_replace(pattern:"^(.+)\\$", replace:"\1", string:path);
  }

  RegCloseKey(handle:key_h);
}
RegCloseKey(handle:hklm);

if (isnull(path))
{
  NetUseDel();
  exit(0, "Novell File Reporter Engine is not installed.");
}
NetUseDel(close:FALSE);


# Check the version of the main exe.
share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:path);
exe =  ereg_replace(pattern:"^[A-Za-z]:(.*)", replace:"\1\NFREngine.exe", string:path);

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

fh = CreateFile(
  file               : exe,
  desired_access     : GENERIC_READ,
  file_attributes    : FILE_ATTRIBUTE_NORMAL,
  share_mode         : FILE_SHARE_READ,
  create_disposition : OPEN_EXISTING
);

ver = NULL;
if (!isnull(fh))
{
  ver = GetFileVersion(handle:fh);
  CloseFile(handle:fh);
}
NetUseDel();


# Check the version number.
if (!isnull(ver))
{
  version = join(ver, sep:'.');
  fixed_version = '1.0.2.53';

  # nb: we're checking the file version so we don't have to worry about strict mode.
  if (ver_compare(ver:ver, fix:fixed_version) == -1)
  {
    if (report_verbosity > 0)
    {
      report =
        '\n  Path              : ' + path +
        '\n  File              : NFREngine.exe' +
        '\n  Installed version : ' + version +
        '\n  Fixed version     : ' + fixed_version + '\n';
      security_hole(port:port, extra:report);
    }
    else security_hole(port);
    exit(0);
  }
  exit(0, "Novell File Reporter Engine version "+version+" is installed and thus is not affected.");
}
else exit(1, "Couldn't get file version of '"+(share-'$')+":"+exe+"'.");