Programmer's Notepad ctags Processing Buffer Overflow

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


include("compat.inc");

if (description)
{
  script_id(31410);
  script_version("1.17");
 script_cvs_date("Date: 2018/07/26 13:32:43");

  script_cve_id("CVE-2008-1210");
  script_bugtraq_id(28119);
  script_xref(name:"Secunia", value:"29233");

  script_name(english:"Programmer's Notepad ctags Processing Buffer Overflow");
  script_summary(english:"Checks version of pn.exe");

 script_set_attribute(attribute:"synopsis", value:
"The remote Windows host contains an application that is affected by a
buffer overflow vulnerability.");
 script_set_attribute(attribute:"description", value:
"Programmer's Notepad, an open source text editor for coders, is
installed on the remote host.

The version of Programmer's Notepad installed on the remote host
contains a buffer overflow that can be triggered when parsing ctags
output. If an attacker can trick a user on the remote host to open a
specially crafted file and use the 'Jump To' dialog, this issue could
be leveraged to execute arbitrary code subject to the privileges of
the current user.");
  # http://sourceforge.net/project/shownotes.php?release_id=581499&group_id=45545
 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d6a35cc0");
 script_set_attribute(attribute:"solution", value:"Upgrade to Programmer's Notepad version 2.0.8.718 or later.");
 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_cwe_id(119);

 script_set_attribute(attribute:"plugin_publication_date", value:"2008/03/10");

script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:pnotepad:programmers_notepad");
script_end_attributes();


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

  script_copyright(english:"This script is Copyright (C) 2008-2018 Tenable Network Security, Inc.");

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

  exit(0);
}


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


# Figure out where the installer recorded information about it.
key = NULL;

list = get_kb_list("SMB/Registry/HKLM/SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall/*/DisplayName");
if (isnull(list)) exit(0);

foreach name (keys(list))
{
  prod = list[name];
  if (prod && "Programmer's Notepad" >< prod)
  {
    key = ereg_replace(pattern:"^SMB\/Registry\/HKLM\/(.+)\/DisplayName$", replace:"\1", string:name);
    key = str_replace(find:"/", replace:"\", string:key);
    break;
  }
}
if (isnull(key)) exit(0);


# 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");

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


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


# Find out where it was installed.
path = NULL;

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

  RegCloseKey(handle:key_h);
}
RegCloseKey(handle:hklm);
if (isnull(path))
{
  NetUseDel();
  exit(0);
}


# Determine the version of pn.exe.
share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:path);
exe = ereg_replace(pattern:"^[A-Za-z]:(.*)", replace:"\1\pn.exe", string:path);
NetUseDel(close:FALSE);

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))
{
  fix = split("2.0.8.718", sep:'.', keep:FALSE);
  for (i=0; i<max_index(fix); i++)
    fix[i] = int(fix[i]);

  for (i=0; i<max_index(ver); i++)
    if ((ver[i] < fix[i]))
    {
      if (report_verbosity)
      {
        version = string(ver[0], ".", ver[1], ".", ver[2], ".", ver[3]);
        report = string(
          "\n",
          "Programmer's Notepad version ", version, " is installed under :\n",
          "\n",
          "  ", path, "\n"
        );
        security_hole(port:port, extra:report);
      }
      else security_hole(port);
      break;
    }
    else if (ver[i] > fix[i])
      break;
}