Vulnerabilities > CVE-2012-4876 - Buffer Errors vulnerability in Trendnet products

047910
CVSS 10.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
trendnet
CWE-119
critical
nessus
exploit available
metasploit

Summary

Stack-based buffer overflow in the UltraMJCam ActiveX Control in TRENDnet SecurView TV-IP121WN Wireless Internet Camera allows remote attackers to execute arbitrary code via a long string to the OpenFileDlg method. Per Secunia (http://secunia.com/advisories/48601)"The vulnerability is confirmed in version 1.1.52.18. Other versions may also be affected."

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Exploit-Db

  • descriptionTRENDnet SecurView Internet Camera UltraMJCam OpenFileDlg Buffer Overflow. CVE-2012-4876. Remote exploit for windows platform
    idEDB-ID:18709
    last seen2016-02-02
    modified2012-04-06
    published2012-04-06
    reportermetasploit
    sourcehttps://www.exploit-db.com/download/18709/
    titleTRENDnet SecurView Internet Camera UltraMJCam OpenFileDlg Buffer Overflow
  • descriptionTRENDnet SecurView TV-IP121WN Wireless Internet Camera UltraMJCam ActiveX Control OpenFileDlg WideCharToMultiByte Remote Stack Buffer Overflow. CVE-2012-4876...
    fileexploits/hardware/remote/18675.txt
    idEDB-ID:18675
    last seen2016-02-02
    modified2012-03-28
    platformhardware
    port
    published2012-03-28
    reporterrgod
    sourcehttps://www.exploit-db.com/download/18675/
    titleTRENDnet SecurView TV-IP121WN Wireless Internet Camera UltraMJCam ActiveX Control OpenFileDlg WideCharToMultiByte Remote Stack Buffer Overflow
    typeremote

Metasploit

descriptionThis module exploits a vulnerability found in TRENDnet SecurView Internet Camera's ActiveX control. By supplying a long string of data as the sFilter argument of the OpenFileDlg() function, it is possible to trigger a buffer overflow condition due to WideCharToMultiByte (which converts unicode back to) overwriting the stack more than it should, which results arbitrary code execution under the context of the user.
idMSF:EXPLOIT/WINDOWS/BROWSER/ULTRAMJCAM_OPENFILEDIG_BOF
last seen2020-06-10
modified2017-10-05
published2012-04-06
referenceshttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4876
reporterRapid7
sourcehttps://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/windows/browser/ultramjcam_openfiledig_bof.rb
titleTRENDnet SecurView Internet Camera UltraMJCam OpenFileDlg Buffer Overflow

Nessus

NASL familyWindows
NASL idTRENDNET_SECURVIEW_UTRAMJCAM_ACTIVEX_BOF.NASL
descriptionThe remote host has the TRENDnet SecurView UltraMJCam ActiveX control installed. A stack-based buffer overflow can be triggered by providing an overlong argument to the
last seen2020-06-01
modified2020-06-02
plugin id58597
published2012-04-04
reporterThis script is Copyright (C) 2012-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/58597
titleTRENDnet SecurView UltraMJCam ActiveX Control OpenFileDlg Method WideCharToMultiByte() Call Remote Overflow
code
#
# (C) Tenable Network Security, Inc.
#

include('compat.inc');

if (description)
{
  script_id(58597);
  script_version("1.11");
  script_cvs_date("Date: 2018/08/01 17:36:15");

  script_cve_id("CVE-2012-4876");
  script_bugtraq_id(52760);
  script_xref(name:"EDB-ID", value:"18675");
  script_xref(name:"EDB-ID", value:"18709");

  script_name(english:"TRENDnet SecurView UltraMJCam ActiveX Control OpenFileDlg Method WideCharToMultiByte() Call Remote Overflow");
  script_summary(english:"Checks if the kill bit is set");

  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 remote host has the TRENDnet SecurView UltraMJCam ActiveX control
installed. A stack-based buffer overflow can be triggered by providing
an overlong argument to the 'OpenFileDlg()' method.  This is because
the method does not verify the size of the argument before calling
'WideCharToMultiByte()'.

By tricking a user into opening a specially crafted web page, a
remote, unauthenticated attacker could execute arbitrary code on the
remote host subject to the user's privileges."
  );
 script_set_attribute(attribute:"see_also", value:"http://retrogod.altervista.org/9sg_trendnet_adv.htm");
  script_set_attribute(
    attribute:"solution",
    value:"Remove or disable the control as fixes are not available."
  );
  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: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:"metasploit_name", value:'TRENDnet SecurView Internet Camera UltraMJCam OpenFileDlg Buffer Overflow');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/03/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/04/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe",value:"cpe:/a:trendnet:securview_wireless_internet_camera_activex_control");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2012-2018 Tenable Network Security, Inc.");

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

  exit(0);
}

include('smb_func.inc');
include('smb_activex_func.inc');
include('misc_func.inc');
include('global_settings.inc');

get_kb_item_or_exit('SMB/Registry/Enumerated');
get_kb_item_or_exit('SMB/WindowsVersion', exit_code:1);

if (activex_init() != ACX_OK) exit(1, 'activex_init() failed.');

clsid = '{707ABFC2-1D27-4a10-A6E4-6BE6BDF9FB11}';

# Make sure the control is installed
file = activex_get_filename(clsid:clsid);
if (isnull(file))
{
  activex_end();
  exit(1, "activex_get_filename() returned NULL.");
}
if (!file)
{
  activex_end();
  exit(0, "The control is not installed since the class id '"+clsid+"' is not defined on the remote host.");
}

# Get its version
version = activex_get_fileversion(clsid:clsid);
if (!version) version = 'unknown';

info = "";
if (report_paranoia > 1 || activex_get_killbit(clsid:clsid) == 0)
{
  info +=
    '\n  Class identifier  : ' + clsid +
    '\n  Filename          : ' + file +
    '\n  Installed version : ' + version + '\n';
}
activex_end();

# Report findings.
if (info)
{
  if (report_paranoia > 1)
  {
    report = info +
      '\n' +
      'Note, though, that Nessus did not check whether the kill bit was\n' +
      "set for the control's CLSID because of the Report Paranoia setting" + '\n' +
      'in effect when this scan was run.\n';
  }
  else
  {
    report = info +
      '\n' +
      'Moreover, its kill bit is not set so it is accessible via Internet\n' +
      'Explorer.\n';
  }

  if (report_verbosity > 0) security_hole(port:kb_smb_transport(), extra:report);
  else security_hole(kb_smb_transport());

  exit(0);
}
else exit(0, "The control is installed, but its kill bit is set.");