Vulnerabilities > CVE-2016-0088 - Improper Access Control vulnerability in Microsoft Windows 10, Windows 8.1 and Windows Server 2012

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-284
nessus

Summary

Hyper-V in Microsoft Windows 8.1, Windows Server 2012 Gold and R2, and Windows 10 allows guest OS users to execute arbitrary code on the host OS via a crafted application, aka "Hyper-V 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_idMS16-045
bulletin_url
date2016-04-12T00:00:00
impactRemote Code Execution
knowledgebase_id3143118
knowledgebase_url
severityImportant
titleSecurity Update for Windows Hyper-V

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS16-045.NASL
descriptionThe remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities : - An arbitrary code execution vulnerability exists in Hyper-V due to a failure to properly validate input from an authenticated user on a guest operating system. An attacker can exploit this, via a crafted application on the guest operating system, to execute arbitrary code on the host operating system. (CVE-2016-0088) - Multiple information disclosure vulnerabilities exists in Hyper-V due to a failure to properly validate input from an authenticated user on a guest operating system. An attacker can exploit this, via a crafted application on the guest operating system, to disclose memory information on the host operating system. (CVE-2016-0089, CVE-2016-0090) Note that users who have not enabled the Hyper-V role are not affected by these vulnerabilities.
last seen2020-06-01
modified2020-06-02
plugin id90438
published2016-04-12
reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/90438
titleMS16-045: Security Update for Windows Hyper-V (3143118)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(90438);
  script_version("1.12");
  script_cvs_date("Date: 2019/11/19");

  script_cve_id("CVE-2016-0088", "CVE-2016-0089", "CVE-2016-0090");
  script_bugtraq_id(85915, 85916, 85921);
  script_xref(name:"MSFT", value:"MS16-045");
  script_xref(name:"MSKB", value:"3147461");
  script_xref(name:"MSKB", value:"3135456");
  script_xref(name:"IAVB", value:"2016-B-0064");

  script_name(english:"MS16-045: Security Update for Windows Hyper-V (3143118)");
  script_summary(english:"Checks version of vmswitch.sys or vmsif.dll.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by 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 arbitrary code execution vulnerability exists in
    Hyper-V due to a failure to properly validate input from
    an authenticated user on a guest operating system. An
    attacker can exploit this, via a crafted application on
    the guest operating system, to execute arbitrary code on
    the host operating system. (CVE-2016-0088)

  - Multiple information disclosure vulnerabilities exists
    in Hyper-V due to a failure to properly validate input
    from an authenticated user on a guest operating system.
    An attacker can exploit this, via a crafted application
    on the guest operating system, to disclose memory
    information on the host operating system.
    (CVE-2016-0089, CVE-2016-0090)

Note that users who have not enabled the Hyper-V role are not affected
by these vulnerabilities.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-045");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows 2012, 8.1,
2012 R2, and 10.");
  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_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-0088");

  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:"2016/04/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/04/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/04/12");

  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) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_hotfixes.nasl", "wmi_enum_server_features.nbin", "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("smb_reg_query.inc");
include("misc_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS16-045';
kbs = make_list('3147461', '3135456');

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(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);

# (Hyper-V ID = 20)
if (!get_kb_item('WMI/server_feature/20'))
{
  # could not determine if Hyper-V was enabled via wmi, so now check with registry
  # This is the key for the version of the integration services installer files,
  # which are only on the Hyper-V host.
  # Connect to remote registry.
  registry_init();
  hklm = registry_hive_connect(hive:HKEY_LOCAL_MACHINE, exit_on_fail:TRUE);
  hyperv_reg = get_registry_value(handle:hklm, item:"SOFTWARE\Microsoft\Windows NT\CurrentVersion\Virtualization\GuestInstaller\Version\Microsoft-Hyper-V-Guest-Installer");
  RegCloseKey(handle:hklm);
  close_registry(close:TRUE);

  if (!hyperv_reg)
    exit(0, "Systems without the Hyper-V role enabled are not affected by the vulnerability.");
}

systemroot = hotfix_get_systemroot();
if (!systemroot) audit(AUDIT_PATH_NOT_DETERMINED, 'system root');

port = kb_smb_transport();
login  = kb_smb_login();
pass   = kb_smb_password();
domain = kb_smb_domain();

if(hotfix_check_fversion_init() != HCF_OK)
  audit(AUDIT_FN_FAIL, 'hotfix_check_fversion_init');

winsxs = ereg_replace(pattern:'^[A-Za-z]:(.*)', replace:"\1\WinSxS", string:systemroot);
winsxs_share = hotfix_path2share(path:systemroot);

rc = NetUseAdd(login:login, password:pass, domain:domain, share:winsxs_share);
if (rc != 1)
{
  NetUseDel();
  audit(AUDIT_SHARE_FAIL, winsxs_share);
}

key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\ApplicabilityEvaluationCache\Package_for_KB3135456~31bf3856ad364e35~amd64~~6.2.1.3";

files = list_dir(basedir:winsxs, level:0, dir_pat:"amd64_microsoft-hyper-v-drivers-vmswitch_31bf3856ad364e35_", file_pat:"^vmswitch\.sys$", max_recurse:1);

files10 = list_dir(basedir:winsxs, level:0, dir_pat:"amd64_microsoft-hyper-v-d..s-vmswitch-netsetup_31bf3856ad364e35_", file_pat:"^vmsif\.dll$", max_recurse:1);

if(
  # Windows 10
  hotfix_check_winsxs(os:"10",
                      sp:0,
                      files:files10,
                      versions:make_list('10.0.10240.16766'),
                      max_versions:make_list('10.0.10240.99999'),
                      bulletin:bulletin,
                      kb:"3147461") ||

  # Windows 8.1 / Windows Server 2012 R2    
  hotfix_check_winsxs(os:'6.3',
                      sp:0,
                      files:files,
                      versions:make_list('6.3.9600.18258'),
                      max_versions:make_list('6.3.9600.99999'),
                      bulletin:bulletin,
                      kb:'3135456',
                      key:key) ||

  # Windows 8 / Windows Server 2012
  hotfix_check_winsxs(os:'6.2',
                      sp:0,
                      files:files,
                      versions:make_list('6.2.9200.21793'),
                      max_versions:make_list('6.2.9200.99999'),
                      bulletin:bulletin,
                      kb:'3135456',
                      key:key)
)
{
  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');
}