Broadcom Wireless Driver (BCMWL5.SYS) Probe Response SSID Overflow

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


include("compat.inc");

if (description)
{
  script_id(23637);
  script_version("1.17");
  script_cvs_date("Date: 2018/06/27 18:42:27");

  script_cve_id("CVE-2006-5882");
  script_bugtraq_id(21007);

  script_name(english:"Broadcom Wireless Driver (BCMWL5.SYS) Probe Response SSID Overflow");
  script_summary(english:"Checks version of Broadcom wireless driver");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host has a wireless device driver that is prone to
a buffer overflow attack.");
  script_set_attribute(attribute:"description", value:
"The Windows remote host contains a Broadcom wireless device driver.

The installed version of this driver on the remote host includes the
file 'bcmwl5.sys' that is reportedly affected by a stack-based
overflow vulnerability. An attacker within wireless range of the
affected host may be able to leverage this issue using a 802.11 probe
response with a long SSID field to execute arbitrary kernel-mode code
on the affected host.");
  # https://web.archive.org/web/20061209130735/http://projects.info-pull.com/mokb/MOKB-11-11-2006.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fee574a6");
  # https://web.archive.org/web/20070106074214/http://isotf.org/advisories/zert-01-111106.htm
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5f902569");
  script_set_attribute(attribute:"see_also", value:"https://isc.sans.edu/diary/Broadcom+Wireless+Vulnerability/1845" );
  script_set_attribute(attribute:"solution", value:"Contact the device's manufacturer for an update.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
script_cwe_id(119);

  script_set_attribute(attribute:"vuln_publication_date", value:"2006/11/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/11/13");

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


if (!get_kb_item("SMB/Registry/Enumerated")) exit(0);
port = kb_smb_transport();
login = kb_smb_login();
pass = kb_smb_password();
domain = kb_smb_domain();


# Connect to the remote registry.
if(! smb_session_init()) audit(AUDIT_FN_FAIL, 'smb_session_init');

rc = NetUseAdd(login:login, password:pass, domain:domain, share:"IPC$");
if (rc != 1) exit(0);

hklm = RegConnectRegistry(hkey:HKEY_LOCAL_MACHINE);
if (isnull(hklm))
{
  NetUseDel();
  exit(0);
}


# Check whether it's installed.
paths = make_array();
# - Linksys
fixes["Linksys"] = "4.100.15.5";
key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{02AC211F-0026-4D6D-A5D8-429F94C86181}";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
  value = RegQueryValue(handle:key_h, item:"InstallLocation");
  if (!isnull(value))
  {
    path = value[1] + "\Driver";
    paths[path] = "Linksys";
  }

  RegCloseKey(handle:key_h);
}
# - Zonet
# nb: I don't really know what the fix is, but "3.50.21.10" is known vulnerable.
if (report_paranoia < 2) fixes["Zonet"] = "3.50.21.11";
else fixes["Zonet"] = "9999";
key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{BD3F013F-D0FE-4A4D-AB4A-56B856B9C2C4}";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
path = NULL;
if (!isnull(key_h))
{
  value = RegQueryValue(handle:key_h, item:"LogFile");
  if (!isnull(value))
  {
    path = ereg_replace(pattern:"^(.*)\setup.ilg", replace:"\1", string:value[1]);
    paths[path] = "Zonet";
  }

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


# If it is, get the version of the affected file.
foreach path (keys(paths))
{
  NetUseDel(close:FALSE);

  share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:path);
  rc = NetUseAdd(login:login, password:pass, domain:domain, share:share);
  if (rc != 1)
  {
    NetUseDel();
    exit(0);
  }

  dll =  ereg_replace(pattern:"^[A-Za-z]:(.*)", replace:"\1\bcmwl5.sys", string:path);
  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 installed.
  vendor = paths[path];
  if (!isnull(ver) && !isnull(fixes[vendor]))
  {
    fix = split(fixes[vendor], sep:'.', keep:FALSE);
    for (i=0; i<4; i++)
      fix[i] = int(fix[i]);

    for (i=0; i<max_index(ver); i++)
    {
      if ((ver[i] < fix[i]))
      {
        version = string(ver[0], ".", ver[1], ".", ver[2], ".", ver[3]);
        report = string(
          "Version ", version, " of the Broadcom driver from ", vendor, " is installed\n",
          "under : \n",
          "\n",
          "  ", path, "\n",
          "\n"
        );
        security_hole(port:port, extra:report);

        NetUseDel();
        exit(0);
      }
      else if (ver[i] > fix[i])
        break;
    }
  }
}


# Clean up.
NetUseDel();