Vulnerabilities > CVE-2016-3345 - Improper Access Control vulnerability in Microsoft products

047910
CVSS 9.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
SINGLE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
microsoft
CWE-284
critical
nessus

Summary

The SMBv1 server 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, and Windows 10 Gold, 1511, and 1607 allows remote attackers to execute arbitrary code via crafted packets, aka "Windows SMB Authenticated Remote Code Execution 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.

Msbulletin

bulletin_idMS16-114
bulletin_url
date2016-09-13T00:00:00
impactRemote Code Execution
knowledgebase_id3185879
knowledgebase_url
severityImportant
titleSecurity Update for Windows SMBv1 Server

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS16-114.NASL
descriptionThe remote Windows host is missing a security update. It is, therefore, affected by a remote code execution vulnerability in the Microsoft Server Message Block 1.0 (SMBv1) Server due to improper handling of certain requests. An authenticated, remote attacker can exploit this, via specially crafted packets, to cause a denial of service condition or the execution of arbitrary code.
last seen2020-06-01
modified2020-06-02
plugin id93473
published2016-09-13
reporterThis script is Copyright (C) 2016-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/93473
titleMS16-114: Security Update for Windows SMBv1 Server (3185879)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(93473);
  script_version("1.7");
  script_cvs_date("Date: 2018/11/15 20:50:32");
  script_cve_id("CVE-2016-3345");
  script_bugtraq_id(92859);
  script_xref(name:"MSFT", value:"MS16-114");
  script_xref(name:"MSKB", value:"3177186");
  script_xref(name:"MSKB", value:"3185611");
  script_xref(name:"MSKB", value:"3185614");
  script_xref(name:"MSKB", value:"3189866");
  script_xref(name:"IAVA", value:"2016-A-0248");

  script_name(english:"MS16-114: Security Update for Windows SMBv1 Server (3185879)");
  script_summary(english:"Checks the version of srv.sys.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by a remote code execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing a security update. It is,
therefore, affected by a remote code execution vulnerability in the
Microsoft Server Message Block 1.0 (SMBv1) Server due to improper
handling of certain requests. An authenticated, remote attacker can
exploit this, via specially crafted packets, to cause a denial of
service condition or the execution of arbitrary code.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-114");
  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, and 10.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:"2016/09/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/09/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/09/13");

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

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

  script_copyright(english:"This script is Copyright (C) 2016-2018 Tenable Network Security, Inc.");

  script_dependencies("smb_hotfixes.nasl", "ms_bulletin_checks_possible.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 = 'MS16-114';
kbs = make_list(
  '3177186',
  '3185611',
  '3185614',
  '3189866'
);

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

productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
if ("Windows 8" >< productname && "8.1" >!< productname)
  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);

kb = '3177186';
if (
  # Vista / Windows Server 2008
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"srv.sys", version:"6.0.6002.24000", min_version:"6.0.6002.20000", dir:"\system32\drivers", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"srv.sys", version:"6.0.6002.19673", min_version:"6.0.6002.18000", dir:"\system32\drivers", bulletin:bulletin, kb:kb) ||

  # 7 / Windows Server 2008 R2
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"srv.sys", version:"6.1.7601.23517", min_version:"6.1.7600.20000", dir:"\system32\drivers", bulletin:bulletin, kb:kb) ||

  # 8.1 / Windows Server 2012 R2
  hotfix_is_vulnerable(os:"6.3", sp:0, file:"srv.sys", version:"  6.3.9600.18432", min_version:"6.3.9600.16000", dir:"\system32\drivers", bulletin:bulletin, kb:kb) ||

  # Windows Server 2012
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"srv.sys", version:"6.2.9200.21954", min_version:"6.2.9200.16000", dir:"\system32\drivers", bulletin:bulletin, kb:kb) ||

  # Windows 10
  hotfix_is_vulnerable(os:"10", sp:0, os_build:"14393", file:"srv.sys", version:"10.0.14393.187", dir:"\system32\drivers", bulletin:bulletin, kb:'3189866') ||
  hotfix_is_vulnerable(os:"10", sp:0, os_build:"10586", file:"srv.sys", version:"10.0.10586.589", dir:"\system32\drivers", bulletin:bulletin, kb:'3185614') ||
  hotfix_is_vulnerable(os:"10", sp:0, os_build:"10240", file:"srv.sys", version:"10.0.10240.17113", dir:"\system32\drivers", bulletin:bulletin, kb:'3185611')
)
{
  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, 'affected');
}