Vulnerabilities > CVE-2016-7237 - Improper Access Control vulnerability in Microsoft products

047910
CVSS 6.5 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
microsoft
CWE-284
nessus
exploit available

Summary

Local Security Authority Subsystem Service (LSASS) in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, and 1607, and Windows Server 2016 allows remote authenticated users to cause a denial of service (system hang) via a crafted request, aka "Local Security Authority Subsystem Service Denial of Service Vulnerability."

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Embedding Scripts within Scripts
    An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
  • Signature Spoofing by Key Theft
    An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.

Exploit-Db

descriptionMicrosoft Windows - LSASS SMB NTLM Exchange Null-Pointer Dereference (MS16-137). CVE-2016-7237. Dos exploit for Windows platform
fileexploits/windows/dos/40744.txt
idEDB-ID:40744
last seen2016-11-09
modified2016-11-09
platformwindows
port
published2016-11-09
reporterExploit-DB
sourcehttps://www.exploit-db.com/download/40744/
titleMicrosoft Windows - LSASS SMB NTLM Exchange Null-Pointer Dereference (MS16-137)
typedos

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS16-137.NASL
descriptionThe remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities : - An information disclosure vulnerability exists in Windows Virtual Secure Mode due to improper handling of objects in memory. An authenticated, remote attacker can exploit this, via a specially crafted application, to disclose sensitive information. (CVE-2016-7220) - A denial of service vulnerability exists in the Local Security Authority Subsystem Service (LSASS) when handling specially crafted requests. An authenticated, remote attacker can exploit this to cause the host to become non-responsive. (CVE-2016-7237) - An elevation of privilege vulnerability exists due to improper handling of NTLM password change requests. An authenticated, remote attacker can exploit this, via a specially crafted application, to gain administrative privileges. (CVE-2016-7238)
last seen2020-06-01
modified2020-06-02
plugin id94638
published2016-11-08
reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/94638
titleMS16-137: Security Update for Windows Authentication Methods (3199173)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(94638);
  script_version("1.15");
  script_cvs_date("Date: 2019/11/14");

  script_cve_id("CVE-2016-7220", "CVE-2016-7237", "CVE-2016-7238");
  script_bugtraq_id(94036, 94040, 94045);
  script_xref(name:"MSFT", value:"MS16-137");
  script_xref(name:"MSKB", value:"3197867");
  script_xref(name:"MSKB", value:"3197868");
  script_xref(name:"MSKB", value:"3197873");
  script_xref(name:"MSKB", value:"3197874");
  script_xref(name:"MSKB", value:"3197876");
  script_xref(name:"MSKB", value:"3197877");
  script_xref(name:"MSKB", value:"3198510");
  script_xref(name:"MSKB", value:"3198585");
  script_xref(name:"MSKB", value:"3198586");
  script_xref(name:"MSKB", value:"3200970");

  script_name(english:"MS16-137: Security Update for Windows Authentication Methods (3199173)");
  script_summary(english:"Checks the file versions.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing a security update. It is,
therefore, affected by multiple vulnerabilities :

  - An information disclosure vulnerability exists in
    Windows Virtual Secure Mode due to improper handling of
    objects in memory. An authenticated, remote attacker can
    exploit this, via a specially crafted application, to
    disclose sensitive information. (CVE-2016-7220)

  - A denial of service vulnerability exists in the Local
    Security Authority Subsystem Service (LSASS) when
    handling specially crafted requests. An authenticated,
    remote attacker can exploit this to cause the host to
    become non-responsive. (CVE-2016-7237)

  - An elevation of privilege vulnerability exists due to
    improper handling of NTLM password change requests. An
    authenticated, remote attacker can exploit this, via a
    specially crafted application, to gain administrative
    privileges. (CVE-2016-7238)");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-137");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows Vista, 2008, 7,
2008 R2, 2012, 8.1, RT 8.1, 2012 R2, 10, and 2016.");
  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:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-7238");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/11/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/11/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/11/08");

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

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

  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl", "smb_check_rollup.nasl");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

include("audit.inc");
include("smb_hotfixes_fcheck.inc");
include("smb_hotfixes.inc");
include("smb_func.inc");
include("misc_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS16-137';
kbs = make_list('3197867',
                '3197868',
                '3197873',
                '3197874',
                '3197876',
                '3197877',
                '3198510',
                '3198585',
                '3198586',
                '3200970');

if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

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

if (hotfix_check_sp_range(vista:'2', win7:'1', win8:'0', win81:'0', win10:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

if (
  # Vista / Windows Server 2008
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"msv1_0.dll", version:"6.0.6002.24025", min_version:"6.0.6002.23000", dir:"\system32", bulletin:bulletin, kb:"3198510") ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"msv1_0.dll", version:"6.0.6002.19701", min_version:"6.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:"3198510") ||
  # Windows 7 / Server 2008 R2
  smb_check_rollup(os:"6.1", sp:1, rollup_date:"11_2016", bulletin:bulletin, rollup_kb_list:make_list(3197867, 3197868)) ||
  # Windows Server 2012
  smb_check_rollup(os:"6.2", sp:0, rollup_date:"11_2016", bulletin:bulletin, rollup_kb_list:make_list(3197876, 3197877)) ||
  # Windows 8.1 / Windows Server 2012 R2
  smb_check_rollup(os:"6.3", sp:0, rollup_date:"11_2016", bulletin:bulletin, rollup_kb_list:make_list(3197873, 3197874)) ||
  # Windows 10
  smb_check_rollup(os:"10", sp:0, os_build:"10240", rollup_date:"11_2016", bulletin:bulletin, rollup_kb_list:make_list(3198585)) ||
  smb_check_rollup(os:"10", sp:0, os_build:"10586", rollup_date:"11_2016", bulletin:bulletin, rollup_kb_list:make_list(3198586)) ||
  smb_check_rollup(os:"10", sp:0, os_build:"14393", rollup_date:"11_2016", bulletin:bulletin, rollup_kb_list:make_list(3200970))
)
{
  set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, hotfix_get_audit_report());
}

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/139700/lsass-corrupt.txt
idPACKETSTORM:139700
last seen2016-12-05
published2016-11-14
reporterlaurent gaffie
sourcehttps://packetstormsecurity.com/files/139700/LSASS-SMB-NTLM-Exchange-Remote-Memory-Corruption.html
titleLSASS SMB NTLM Exchange Remote Memory Corruption