| code | #
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(66425);
script_version("1.20");
script_cvs_date("Date: 2018/11/15 20:50:28");
script_cve_id("CVE-2013-1346");
script_bugtraq_id(59885);
script_xref(name:"MSKB", value:"2846338");
script_name(english:"MS Security Advisory 2846338: Vulnerability in Microsoft Malware Protection Engine Could Allow Remote Code Execution");
script_summary(english:"Checks engine version");
script_set_attribute(attribute:"synopsis", value:
"The remote host has an antimalware application that is affected by a
code execution vulnerability.");
script_set_attribute(attribute:"description", value:
"A vulnerable version of Microsoft Malware Protection Engine (MMPE) is
installed on the remote host. Scanning a maliciously crafted file can
result in arbitrary code execution. This plugin checks if a vulnerable
version of MMPE is being used by any of the following applications :
- Microsoft Forefront Client Security
- Microsoft Malicious Software Removal Tool
- Microsoft Security Essentials
- Microsoft Security Essentials Prerelease
- Windows Defender for Windows XP, Windows Server 2003,
Windows Vista, Windows Server 2008, Windows 7, and
Windows Server 2008 R2
- Windows Defender for Windows 8
- Microsoft Forefront Endpoint Protection 2010
- Microsoft System Center 2012 Endpoint Protection
These applications are only affected if they are using a scan engine
less than 1.1.9506.0 on a 64-bit host.");
script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityAdvisories/2013/2846338");
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:
"Enable automatic updates to update the scan engine for the relevant
antimalware applications. Refer to KB2510781 for information on how to
verify MMPE has been updated.");
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_set_attribute(attribute:"vuln_publication_date", value:"2013/05/14");
script_set_attribute(attribute:"patch_publication_date", value:"2013/05/14");
script_set_attribute(attribute:"plugin_publication_date", value:"2013/05/15");
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) 2013-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("smb_hotfixes.nasl", "fcs_installed.nasl", "smb_mrt_installed.nasl");
script_require_keys("SMB/Registry/Enumerated", "SMB/ARCH");
script_require_ports(139, 445);
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("smb_func.inc");
get_kb_item_or_exit("SMB/Registry/Enumerated");
arch = get_kb_item_or_exit('SMB/ARCH');
if (arch != 'x64') audit(AUDIT_HOST_NOT, '64-bit');
# indicates if any antimalware products were found. this is used
# to determine whether or not the plugin should check if defender is affected
antimalware_installed = FALSE;
# Connect to the appropriate share.
name = kb_smb_name();
port = kb_smb_transport();
if (!get_port_state(port)) audit(AUDIT_PORT_CLOSED, port);
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);
}
# Figure out where it is installed.
path = NULL;
info = '';
info2 = '';
engine_version = NULL;
fixed_engine_version = "1.1.9506.0";
# Forefront Client Security (either both or neither of these will be in the KB)
engine_version = get_kb_item("Antivirus/Forefront_Client_Security/engine_version");
fcs_path = get_kb_item("Antivirus/Forefront_Client_Security/path");
if (!isnull(engine_version))
{
antimalware_installed = TRUE;
if (ver_compare(ver:engine_version, fix:fixed_engine_version) == -1)
{
info +=
'\n Product : Microsoft Forefront Client Security'+
'\n Path : ' + fcs_path +
'\n Installed version : ' + engine_version +
'\n Fixed version : ' + fixed_engine_version + '\n';
}
else info2 += 'Microsoft Forefront Client Security with MMPE version '+ engine_version + ". ";
}
# Microsoft Security Essentials
# Microsoft Security Essentials Prerelease
# Forefront Endpoint Protection
# System Center Endpoint Protection
engine_version = NULL;
NetUseDel(close:FALSE);
rc = NetUseAdd(login:login, password:pass, domain:domain, share:"IPC$");
if (rc != 1)
{
NetUseDel();
audit(AUDIT_SHARE_FAIL, "IPC$");
}
# Connect to remote registry again.
hklm = RegConnectRegistry(hkey:HKEY_LOCAL_MACHINE);
if (isnull(hklm))
{
NetUseDel();
audit(AUDIT_REG_FAIL);
}
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 if the main exe exists.
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();
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
);
if (!isnull(fh))
{
antimalware_installed = TRUE;
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 / Microsoft Security Essentials Prerelease / Forefront Endpoint Protection / System Center Endpoint Protection'+
'\n Path : ' + share[0] + ':' + exe +
'\n Installed version : ' + engine_version +
'\n Fixed version : ' + fixed_engine_version + '\n';
}
else info2 += 'Microsoft Security Essentials / Microsoft Security Essentials Prerelease / Forefront Endpoint Protection / System Center Endpoint Protection with MMPE version ' + engine_version + ". ";
}
}
# Microsoft Windows Defender
# Microsoft Windows Defender for Windows 8
# defender is apparently disabled when other antimalware products are installed,
# so it will only be checked if the plugin hasn't detected other products are present
if (!antimalware_installed)
{
defender_enabled = TRUE;
engine_version = NULL;
# Check if Windows Defender is disabled via group policy
key = "SOFTWARE\Policies\Microsoft\Windows Defender";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
value = RegQueryValue(handle:key_h, item:"DisableAntiSpyware");
if (!isnull(value))
{
if (value[1] > 0)
{
defender_enabled = FALSE;
}
}
RegCloseKey(handle:key_h);
}
key = "SOFTWARE\Microsoft\Windows Defender";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
value = RegQueryValue(handle:key_h, item:"DisableAntiSpyware");
if (!isnull(value))
{
if (value[1] > 0)
{
defender_enabled = FALSE;
}
}
RegCloseKey(handle:key_h);
}
if (defender_enabled)
{
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;
defender_dll = NULL;
# Check the version of the main exe.
share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:path);
# this is the path smb_kb2491888.nasl checks
dll1 = ereg_replace(pattern:"^[A-Za-z]:(.+Windows Defender\\Definition Updates).+", replace:"\1\Default\MpEngine.dll", string:path);
# this path works for Windows Defender on Windows 8
dll2 = ereg_replace(pattern:"^[A-Za-z]:(.+)$", replace:"\1\MpEngine.dll", 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:dll1,
desired_access:GENERIC_READ,
file_attributes:FILE_ATTRIBUTE_NORMAL,
share_mode:FILE_SHARE_READ,
create_disposition:OPEN_EXISTING
);
if (!isnull(fh))
{
found =1 ;
defender_dll = share[0] + ':' + dll1;
CloseFile(handle:fh);
}
if (found == 0)
{
fh = CreateFile(
file:dll2,
desired_access:GENERIC_READ,
file_attributes:FILE_ATTRIBUTE_NORMAL,
share_mode:FILE_SHARE_READ,
create_disposition:OPEN_EXISTING
);
if (!isnull(fh))
{
found =1 ;
defender_dll = share[0] + ':' + dll2;
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 Path : ' + defender_dll +
'\n Installed version : ' + engine_version +
'\n Fixed version : ' + fixed_engine_version + '\n';
}
else info2 += 'Microsoft Windows Defender with MMPE version ' + engine_version + ". ";
}
}
}
}
RegCloseKey(handle:hklm);
NetUseDel();
# Microsoft Malicious Software Removal Tool
# Applies only to April 2013 or earlier versions of the Microsoft Malicious Software Removal Tool
mrt_version = get_kb_item('SMB/MRT/Version');
if (!isnull(mrt_version))
{
# The "version" is a date - month followed by year:
# March 2012
# Only one version doesn't follow this format, presumably because
# two versions of the tool were released in the month:
# August 2005 A
if (ver_compare(ver:mrt_version, fix:'4.20.7401.0') < 0)
{
info +=
'\n Product : Microsoft Malicious Software Removal Tool' +
'\n Installed version : ' + mrt_version +
'\n Fixed version : 4.20.7401.0 (May 2013)\n';
}
else info2 += 'Microsoft Malicious Software Removal Tool ' + mrt_version + '. ';
}
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 antimalware products installed.");
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