Vulnerabilities > CVE-2011-0037 - Improper Input Validation vulnerability in Microsoft products

047910
CVSS 7.2 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
low complexity
microsoft
CWE-20
nessus

Summary

Microsoft Malware Protection Engine before 1.1.6603.0, as used in Microsoft Malicious Software Removal Tool (MSRT), Windows Defender, Security Essentials, Forefront Client Security, Forefront Endpoint Protection 2010, and Windows Live OneCare, allows local users to gain privileges via a crafted value of an unspecified user registry key.

Common Weakness Enumeration (CWE)

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.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

NASL familyWindows
NASL idSMB_KB2491888.NASL
descriptionA vulnerable version of Microsoft Malware Protection Engine (MMPE) is installed on the remote system. MMPE is typically included with Microsoft anti-malware products such as Windows Live OneCare, Microsoft Security Essentials, Microsoft Forefront Client Security, Microsoft Forefront Client Security, Microsoft Forefront Endpoint Protection 2010, and Microsoft Malicious Software Removal Tool. A local user may be able to gain local system privileges by creating a specially crafted registry key before a system is scanned using Microsoft Malware Protection Engine.
last seen2020-06-01
modified2020-06-02
plugin id52456
published2011-02-25
reporterThis script is Copyright (C) 2011-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/52456
titleMS KB2491888: Microsoft Malware Protection Engine (MMPE) Privilege Escalation
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(52456);
  script_version("1.13");
  script_cvs_date("Date: 2018/11/15 20:50:28");

  script_cve_id("CVE-2011-0037");
  script_bugtraq_id(46540);
  script_xref(name:"MSKB", value:"2491888");

  script_name(english:"MS KB2491888: Microsoft Malware Protection Engine (MMPE) Privilege Escalation");
  script_summary(english:"Checks Microsoft Malware Protection Engine version");

  script_set_attribute(attribute:"synopsis", value:
"The remote host has an application that is affected by a local
privilege escalation vulnerability.");
  script_set_attribute(attribute:"description", value:
"A vulnerable version of Microsoft Malware Protection Engine (MMPE) is
installed on the remote system. MMPE is typically included with
Microsoft anti-malware products such as Windows Live OneCare,
Microsoft Security Essentials, Microsoft Forefront Client Security,
Microsoft Forefront Client Security, Microsoft Forefront Endpoint
Protection 2010, and Microsoft Malicious Software Removal Tool.

A local user may be able to gain local system privileges by creating a
specially crafted registry key before a system is scanned using
Microsoft Malware Protection Engine.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityAdvisories/2011/2491888");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/2510781/microsoft-malware-protection-engine-deployment-information");
  script_set_attribute(attribute:"solution", value:
"Update the malware definitions for the installed Microsoft anti-
malware product.");
 script_set_cvss_base_vector("CVSS2#AV:L/AC:L/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_set_attribute(attribute:"vuln_publication_date", value:"2011/02/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/02/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/02/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"cpe",value:"cpe:/a:microsoft:malware_protection_engine");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2011-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

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

get_kb_item_or_exit("SMB/Registry/Enumerated");

# Connect to the appropriate share.

name    =  kb_smb_name();
port    =  kb_smb_transport();
if (!get_port_state(port))  exit(0, "Port "+port+" is not open.");
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$");
if (rc != 1)
{
  NetUseDel();
  exit(1, "Can't connect to IPC$ share.");
}

# Connect to remote registry.
hklm = RegConnectRegistry(hkey:HKEY_LOCAL_MACHINE);
if (isnull(hklm))
{
  NetUseDel();
  exit(1, "Can't connect to remote registry.");
}

# Figure out where it is installed.
path = NULL;
info = '';
info2 = '';
engine_version = NULL;

fixed_engine_version = "1.1.6603.0";

engine_version = get_kb_item("Antivirus/Forefront_Client_Security/engine_version");
if (!isnull(engine_version))
{
  if (ver_compare(ver:engine_version, fix:fixed_engine_version) == -1)
  {
    info +=
      '\n  Product           : Microsoft Forefront Client Security'+
      '\n  Installed version : ' + engine_version +
      '\n  Fixed version     : ' + fixed_engine_version + '\n';
  }
  else info2 += 'Microsoft Forefront Client Security with MMPE version '+ engine_version + ". ";
}

# Live One care
engine_version = get_kb_item("Antivirus/OneCare/onecare_engine_version");
if (!isnull(engine_version))
{
  if (ver_compare(ver:engine_version, fix:fixed_engine_version) == -1)
  {
    info +=
     '\n  Product           : Windows Live OneCare'+
     '\n  Installed version : ' + engine_version +
     '\n  Fixed version     : ' + fixed_engine_version + '\n';
  }
  else info2 += 'Windows Live OneCare with MMPE version '+ engine_version + ". ";
}

# Microsoft Windows Defender
engine_version = NULL;

key = "SOFTWARE\Microsoft\Windows Defender\Signature Updates";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
  value = RegQueryValue(handle:key_h, item:"EngineVersion");
  if (!isnull(value)) engine_version = value[1];

  RegCloseKey(handle:key_h);
}

path = NULL;
key = "SOFTWARE\Microsoft\Windows Defender\Signature Updates";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
  value = RegQueryValue(handle:key_h, item:"SignatureLocation");
  if (!isnull(value)) path = value[1];

  RegCloseKey(handle:key_h);
}

if(!isnull(path))
{
  found = 0;
  # Check the version of the main exe.
  share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:path);
  dll =  ereg_replace(pattern:"^[A-Za-z]:(.+Windows Defender\\Definition Updates).+", replace:"\1\Default\MpEngine.dll", string:path);
  NetUseDel(close:FALSE);
  rc = NetUseAdd(login:login, password:pass, domain:domain, share:share);
  if (rc != 1)
  {
    NetUseDel();
    exit(1, "Can't connect to "+share+" share.");
  }
  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))
  {
    found =1 ;
    CloseFile(handle:fh);
  }

  if (found && !isnull(engine_version))
  {
    if (ver_compare(ver:engine_version, fix:fixed_engine_version) == -1)
    {
      info +=
       '\n  Product           : Microsoft Windows Defender'+
       '\n  Installed version : ' + engine_version +
       '\n  Fixed version     : ' + fixed_engine_version + '\n';
    }
    else info2 += 'Microsoft Windows Defender with MMPE version ' + engine_version + ". ";
  }
}

# Microsoft Security Essentials
engine_version = NULL;

NetUseDel(close:FALSE);
rc = NetUseAdd(login:login, password:pass, domain:domain, share:"IPC$");
if (rc != 1)
{
  NetUseDel();
  exit(1, "Can't connect to IPC$ share.");
}

# Connect to remote registry again.
hklm = RegConnectRegistry(hkey:HKEY_LOCAL_MACHINE);
if (isnull(hklm))
{
  NetUseDel();
  exit(1, "Can't connect to remote registry.");
}

key = "SOFTWARE\Microsoft\Microsoft Antimalware\Signature Updates";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
  value = RegQueryValue(handle:key_h, item:"EngineVersion");
  if (!isnull(value)) engine_version = value[1];

  RegCloseKey(handle:key_h);
}

path = NULL;
key = "SOFTWARE\Microsoft\Microsoft Antimalware";
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];

  RegCloseKey(handle:key_h);
}

if(!isnull(path))
{
  found = 0;
  # 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\MsMpEng.exe", string:path);
  NetUseDel(close:FALSE);
  rc = NetUseAdd(login:login, password:pass, domain:domain, share:share);
  if (rc != 1)
  {
    NetUseDel();
    exit(1, "Can't connect to "+share+" share.");
  }
  fh = CreateFile(
    file:exe,
    desired_access:GENERIC_READ,
    file_attributes:FILE_ATTRIBUTE_NORMAL,
    share_mode:FILE_SHARE_READ,
    create_disposition:OPEN_EXISTING
  );
  if (!isnull(fh))
  {
    found = 1;
    CloseFile(handle:fh);
  }

  if (found && !isnull(engine_version))
  {
    if (ver_compare(ver:engine_version, fix:fixed_engine_version) == -1)
    {
      info +=
       '\n  Product           : Microsoft Security Essentials / Forefront Endpoint Protection'+
       '\n  Installed version : ' + engine_version +
       '\n  Fixed version     : ' + fixed_engine_version + '\n';
    }
    else info2 += 'Microsoft Security Essentials / Forefront Endpoint Protection with MMPE version ' + engine_version + ". ";
  }
}
RegCloseKey(handle:hklm);
NetUseDel();

if (info)
{
  if (report_verbosity > 0)
  {
    report = '\n' +
      "Nessus found following vulnerable product(s) installed :" +'\n'+
      info;
      security_hole(port:port, extra:report);
  }
  else security_hole(port);

  exit(0);
}
else if(info2) exit(0,"The following instance(s) of MMPE are installed and not vulnerable : "+ info2);
else exit(0, "Nessus could not find evidence of affected Microsoft anti-malware products installed.");

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 46540 CVE ID: CVE-2011-0037 Microsoft Malware Protection Engine是微软反恶意软件产品的一部分。 Malware Protection Engine产品的实现上存在设计问题,本地攻击者可利用此漏洞提升权限。 此漏洞源于Microsoft Malware Protection Engine在扫描时的错误,可通过设置注册表项的特制值提升权限。 Microsoft Microsoft Forefront Endpoint Protection 2010 Microsoft Microsoft Forefront Client Security Microsoft Microsoft Malicious Software Removal Tool Microsoft Microsoft Windows Defender Microsoft Microsoft Security Essentials Microsoft Microsoft Windows Live OneCare 厂商补丁: Microsoft --------- 目前厂商已经发布了升级补丁以修复这个安全问题,请到厂商的主页下载: http://www.microsoft.com/technet/security/
idSSV:20351
last seen2017-11-19
modified2011-03-02
published2011-03-02
reporterRoot
titleMicrosoft Products Malware Protection Engine权限提升漏洞