MS16-026: Security Update for Graphic Fonts to Address Remote Code Execution (3143148)

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(89749);
  script_version("1.11");
  script_cvs_date("Date: 2019/11/20");

  script_cve_id("CVE-2016-0120", "CVE-2016-0121");
  script_bugtraq_id(84027, 84071);
  script_xref(name:"MSFT", value:"MS16-026");
  script_xref(name:"MSKB", value:"3140735");
  script_xref(name:"MSKB", value:"3140745");
  script_xref(name:"MSKB", value:"3140768");

  script_name(english:"MS16-026: Security Update for Graphic Fonts to Address Remote Code Execution (3143148)");
  script_summary(english:"Checks the file version of atmfd.dll and fontsub.dll.");

  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 affected by multiple vulnerabilities in
the Adobe Type Manager Library :

  - A denial of service vulnerability exists due to improper
    handling of OpenType fonts. A remote attacker can
    exploit this vulnerability by convincing a user to open
    a file or visit a website containing specially crafted
    embedded OpenType fonts, resulting in a denial of
    service condition. (CVE-2016-0120)

  - A remote code execution vulnerability exists due to
    improper handling of specially crafted fonts. A remote
    attacker can exploit this vulnerability by convincing a
    user to open a file or visit a website containing
    specially crafted embedded OpenType fonts, resulting in
    the execution of arbitrary code in the context of the
    current user. (CVE-2016-0121)");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-026");
  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:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-0121");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/03/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/03/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/08");

  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");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

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

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS16-026';

kbs = make_list("3140735", "3140745", "3140768");
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);
productname = get_kb_item_or_exit("SMB/ProductName", 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);

if ("Windows 8" >< productname && "8.1" >!< productname)
  audit(AUDIT_OS_SP_NOT_VULN);

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

if (
  # Windows 10
  hotfix_is_vulnerable(os:"10", sp:0, file:"atmfd.dll", version:"5.1.2.247", dir:"\system32", bulletin:bulletin, kb:"3140745") ||

  # 10 threshold 2 (aka 1511)
  hotfix_is_vulnerable(os:"10", sp:0, file:"fontsub.dll", version:"10.0.10586.162", min_version:"10.0.10586.0", dir:"\system32", bulletin:bulletin, kb:"3140768") ||

  # Windows 8.1 / Windows Server 2012 R2
  hotfix_is_vulnerable(os:"6.3", sp:0, file:"atmfd.dll", version:"5.1.2.247", dir:"\system32", bulletin:bulletin, kb:"3140735") ||

  # Windows Server 2012
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"atmfd.dll", version:"5.1.2.247", dir:"\system32", bulletin:bulletin, kb:"3140735") ||

  # Windows 7 and Windows Server 2008 R2
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"atmfd.dll", version:"5.1.2.247", dir:"\system32", bulletin:bulletin, kb:"3140735") ||

  # Vista / Windows 2008
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"atmfd.dll", version:"5.1.2.247", dir:"\system32", bulletin:bulletin, kb:"3140735")
)
{
  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');
}