Yahoo! Messenger YVerInfo ActiveX Buffer Overflows - Nessus

High Plugin ID: 25955

This page contains detailed information about the Yahoo! Messenger YVerInfo ActiveX Buffer Overflows Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 25955
Name: Yahoo! Messenger YVerInfo ActiveX Buffer Overflows
Filename: yahoo_msgr_yverinfo_activex_overflow.nasl
Vulnerability Published: 2007-08-29
This Plugin Published: 2007-08-30
Last Modification Time: 2018-11-15
Plugin Version: 1.21
Plugin Type: local
Plugin Family: Windows
Dependencies: smb_hotfixes.nasl
Required KB Items [?]: SMB/Registry/Enumerated

Vulnerability Information

Severity: High
Vulnerability Published: 2007-08-29
Patch Published: 2007-08-29
CVE [?]: CVE-2007-4515
CPE [?]: cpe:/a:yahoo:messenger

Synopsis

The remote Windows host has an ActiveX control that is affected by multiple buffer overflow vulnerabilities.

Description

The remote host contains the 'YVerInfo' ActiveX control, distributed as part of the Yahoo! services suite typically downloaded with the installer for Yahoo! Messenger.

The version of this control installed on the remote host reportedly contains buffer overflows involving its 'fvCom' and 'info' methods. If an attacker can trick a user on the affected host into visiting a specially crafted web page, this issue could be leveraged to execute arbitrary code on the host subject to the user's privileges.

Solution

Either disable the use of this ActiveX control from within Internet Explorer by setting its kill bit or upgrade to Yahoo! Messenger version 8.1.0.419 (version 2007.8.27.1 of the YVerInfo control itself) or later.

Public Exploits

Target Network Port(s): 139, 445
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the Yahoo! Messenger YVerInfo ActiveX Buffer Overflows vulnerability:

Metasploit: exploit/windows/browser/yahoomessenger_fvcom
[Yahoo! Messenger YVerInfo.dll ActiveX Control Buffer Overflow]
Exploit-DB: exploits/windows/remote/16522.rb
[EDB-16522: Yahoo! Messenger - 'YVerInfo.dll' ActiveX Control Buffer Overflow (Metasploit)]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:N/AC:M/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C

CVSS Base Score:	9.3 (High)
Impact Subscore:	10.0
Exploitability Subscore:	8.6
CVSS Temporal Score:	7.7 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	7.7 (High)

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Plugin Source

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

include("compat.inc");

if (description)
{
  script_id(25955);
  script_version("1.21");
  script_cvs_date("Date: 2018/11/15 20:50:29");

  script_cve_id("CVE-2007-4515");
  script_bugtraq_id(25494);

  script_name(english:"Yahoo! Messenger YVerInfo ActiveX Buffer Overflows");
  script_summary(english:"Checks version of YVerInfo ActiveX control");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host has an ActiveX control that is affected by
multiple buffer overflow vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote host contains the 'YVerInfo' ActiveX control, distributed
as part of the Yahoo! services suite typically downloaded with the
installer for Yahoo! Messenger.

The version of this control installed on the remote host reportedly
contains buffer overflows involving its 'fvCom' and 'info' methods.
If an attacker can trick a user on the affected host into visiting a
specially crafted web page, this issue could be leveraged to execute
arbitrary code on the host subject to the user's privileges.");
  # https://labs.idefense.com/verisign/intelligence/2009/vulnerabilities/display.php?id=591
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c68a95bc");
  script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/archive/1/478167/30/0/threaded");
  # http://web.archive.org/web/20120923075308/http://messenger.yahoo.com/security/view/20070829/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9e0863e9");
  script_set_attribute(attribute:"solution", value:
"Either disable the use of this ActiveX control from within Internet
Explorer by setting its kill bit or upgrade to Yahoo! Messenger
version 8.1.0.419 (version 2007.8.27.1 of the YVerInfo control itself)
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: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:'Yahoo! Messenger YVerInfo.dll ActiveX Control Buffer Overflow');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_cwe_id(119);

  script_set_attribute(attribute:"vuln_publication_date", value:"2007/08/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2007/08/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/08/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:yahoo:messenger");
  script_end_attributes();
 
  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2007-2018 Tenable Network Security, Inc.");

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

  exit(0);
}


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


if (!get_kb_item("SMB/Registry/Enumerated")) exit(0);


# Locate the file used by the controls.
if (activex_init() != ACX_OK) exit(0);

# nb: iDefense talks about D5184A39-CBDF-4A4F-AC1A-7A45A852C883 while
#     Yahoo's advisory uses 64AA7031-C150-4118-8D31-FD273A2BB22C.
clsid = "{64AA7031-C150-4118-8D31-FD273A2BB22C}";
file = activex_get_filename(clsid:clsid);
if (file)
{
  # Check its version.
  ver = activex_get_fileversion(clsid:clsid);
  if (ver && activex_check_fileversion(clsid:clsid, fix:"2007.8.27.1") == TRUE)
  {
    report = NULL;
    if (report_paranoia > 1)
      report = string(
        "Version ", ver, " of the vulnerable control is installed as :\n",
        "\n",
        "  ", file, "\n",
        "\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 if (activex_get_killbit(clsid:clsid) == 0)
      report = string(
        "Version ", ver, " of the vulnerable control is installed as :\n",
        "\n",
        "  ", file, "\n",
        "\n",
        "Moreover, its kill bit is not set so it is accessible via\n",
        "Internet Explorer."
      );
    if (report) security_hole(port:kb_smb_transport(), extra: report);
  }
}
activex_end();

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/yahoo_msgr_yverinfo_activex_overflow.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\yahoo_msgr_yverinfo_activex_overflow.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/yahoo_msgr_yverinfo_activex_overflow.nasl

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How to Run

Here is how to run the Yahoo! Messenger YVerInfo ActiveX Buffer Overflows as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Windows plugin family.
On the right side table select Yahoo! Messenger YVerInfo ActiveX Buffer Overflows plugin ID 25955.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl yahoo_msgr_yverinfo_activex_overflow.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a yahoo_msgr_yverinfo_activex_overflow.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - yahoo_msgr_yverinfo_activex_overflow.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state yahoo_msgr_yverinfo_activex_overflow.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

25494

CWE | Common Weakness Enumeration:

CWE-119 (Weakness) Improper Restriction of Operations within the Bounds of a Memory Buffer

See also:

Similar and related Nessus plugins:

30205 - Yahoo! Music Jukebox ActiveX Controls Buffer Overflows
25459 - Yahoo! Messenger Webcam ActiveX Buffer Overflows

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file yahoo_msgr_yverinfo_activex_overflow.nasl version 1.21. For more plugins, visit the Nessus Plugin Library.

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Yahoo! Messenger YVerInfo ActiveX Buffer Overflows - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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