Vulnerabilities > CVE-2018-0833 - NULL Pointer Dereference vulnerability in Microsoft Windows 8.1, Windows RT 8.1 and Windows Server 2012

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#
include("compat.inc");

if (description)
{
  script_id(106800);
  script_version("1.7");
  script_cvs_date("Date: 2019/11/08");

  script_cve_id(
    "CVE-2018-0742",
    "CVE-2018-0757",
    "CVE-2018-0820",
    "CVE-2018-0825",
    "CVE-2018-0829",
    "CVE-2018-0830",
    "CVE-2018-0832",
    "CVE-2018-0833",
    "CVE-2018-0840",
    "CVE-2018-0842",
    "CVE-2018-0844",
    "CVE-2018-0846",
    "CVE-2018-0847",
    "CVE-2018-0866"
  );
  script_xref(name:"MSKB", value:"4074594");
  script_xref(name:"MSKB", value:"4074597");
  script_xref(name:"MSFT", value:"MS18-4074594");
  script_xref(name:"MSFT", value:"MS18-4074597");

  script_name(english:"KB4074597: Windows 8.1 and Windows Server 2012 R2 February 2018 Security Update");
  script_summary(english:"Checks for rollup.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing security update 4074597
or cumulative update 4074594. It is, therefore, affected by
multiple vulnerabilities :

  - A remote code execution vulnerability exists in the way
    that the scripting engine handles objects in memory in
    Internet Explorer. The vulnerability could corrupt
    memory in such a way that an attacker could execute
    arbitrary code in the context of the current user. An
    attacker who successfully exploited the vulnerability
    could gain the same user rights as the current user.
    (CVE-2018-0866)

  - An information disclosure vulnerability exists when the
    Windows kernel improperly handles objects in memory. An
    attacker who successfully exploited this vulnerability
    could obtain information to further compromise the users
    system.  (CVE-2018-0757, CVE-2018-0829, CVE-2018-0830)

  - An information disclosure vulnerability exists when
    VBScript improperly discloses the contents of its
    memory, which could provide an attacker with information
    to further compromise the users computer or data.
    (CVE-2018-0847)

  - A remote code execution vulnerability exists in
    StructuredQuery when the software fails to properly
    handle objects in memory. An attacker who successfully
    exploited the vulnerability could run arbitrary code in
    the context of the current user. If the current user is
    logged on with administrative user rights, an attacker
    could take control of the affected system. An attacker
    could then install programs; view, change, or delete
    data; or create new accounts with full user rights.
    (CVE-2018-0825)

  - An elevation of privilege vulnerability exists in the
    way that the Windows Kernel handles objects in memory.
    An attacker who successfully exploited the vulnerability
    could execute code with elevated permissions.
    (CVE-2018-0742, CVE-2018-0820)

  - A denial of service vulnerability exists in
    implementations of the Microsoft Server Message Block
    2.0 and 3.0 (SMBv2/SMBv3) client. The vulnerability is
    due to improper handling of certain requests sent by a
    malicious SMB server to the client. An attacker who
    successfully exploited this vulnerability could cause
    the affected system to stop responding until it is
    manually restarted.  (CVE-2018-0833)

  - A remote code execution vulnerability exists when
    Windows improperly handles objects in memory. An
    attacker who successfully exploited these
    vulnerabilities could take control of an affected
    system.  (CVE-2018-0842)

  - An elevation of privilege vulnerability exists when the
    Windows Common Log File System (CLFS) driver improperly
    handles objects in memory. An attacker who successfully
    exploited this vulnerability could run processes in an
    elevated context.  (CVE-2018-0844, CVE-2018-0846)

  - An information disclosure vulnerability exists in the
    Windows kernel that could allow an attacker to retrieve
    information that could lead to a Kernel Address Space
    Layout Randomization (ASLR) bypass. An attacker who
    successfully exploited the vulnerability could retrieve
    the memory address of a kernel object.  (CVE-2018-0832)

  - A remote code execution vulnerability exists in the way
    the scripting engine handles objects in memory in
    Microsoft browsers. The vulnerability could corrupt
    memory in such a way that an attacker could execute
    arbitrary code in the context of the current user. An
    attacker who successfully exploited the vulnerability
    could gain the same user rights as the current user.
    (CVE-2018-0840)");
  # https://support.microsoft.com/en-us/help/4074594/windows-81-update-kb4074594
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?81ed62f4");
  # https://support.microsoft.com/en-us/help/4074597/windows-81-update-kb-4074597
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c03fa8a5");
  script_set_attribute(attribute:"solution", value:
"Apply Security Only update KB4074597 or Cumulative Update KB4074594.");
  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:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-0866");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/02/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/02/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/13");

  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) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_check_rollup.nasl", "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 = "MS18-02";
kbs = make_list('4074594', '4074597');

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(win81:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

# Windows 8 EOL
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);

if (
  smb_check_rollup(os:"6.3",
                   sp:0,
                   rollup_date:"02_2018",
                   bulletin:bulletin,
                   rollup_kb_list:[4074594, 4074597])
)
{
  replace_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());
}