MS15-108: Security Update for JScript and VBScript to Address Remote Code Execution (3089659)

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

include("compat.inc");

if (description)
{
  script_id(86365);
  script_version("1.8");
  script_cvs_date("Date: 2018/11/15 20:50:31");

  script_cve_id(
    "CVE-2015-2482",
    "CVE-2015-6052",
    "CVE-2015-6055",
    "CVE-2015-6059"
  );
  script_bugtraq_id(
    77000,
    77005,
    77007,
    77010
  );
  script_xref(name:"MSFT", value:"MS15-108");
  script_xref(name:"MSKB", value:"3094995");
  script_xref(name:"MSKB", value:"3094996");
  script_xref(name:"IAVA", value:"2015-A-0244");

  script_name(english:"MS15-108: Security Update for JScript and VBScript to Address Remote Code Execution (3089659)");
  script_summary(english:"Checks the version of Vbscript.dll.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The VBScript and JScript engines on the remote host are affected by
multiple vulnerabilities :

  - Multiple remote code execution vulnerabilities exist in
    the VBScript and JScript engines due to improper
    handling of objects in memory. A remote attacker can
    exploit these vulnerabilities by convincing a user to
    visit a specially crafted website, resulting in the
    execution of arbitrary code in the context of the
    current user. (CVE-2015-2482, CVE-2015-6055)

  - A security feature bypass vulnerability exists in the
    VBScript and JScript engines due to a failure to use
    Address Space Layout Randomization (ASLR). An attacker
    can exploit this to predict memory offsets in a call
    stack. (CVE-2015-6052)

  - An information disclosure vulnerability exists in the
    VBScript and JScript engines due to improper handling of
    objects in memory. A remote attacker can exploit this to
    disclose the contents of memory. (CVE-2015-6059)");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2015/ms15-108");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows Vista, 2008, and
2008 R2.");
  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_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date",value:"2015/10/13");
  script_set_attribute(attribute:"patch_publication_date",value:"2015/10/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/10/13");

  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) 2015-2018 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 = 'MS15-108';
kbs = make_list(
  "3094995",
  "3094996"
);

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') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

# if IE isn't installed we must still check the vbscript version
ie_ver = get_kb_item("SMB/IE/Version");
productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);

# This bulletin is only for systems without IE installed or with IE 7
# or lower.
if (!isnull(ie_ver) && (ver_compare(ver:ie_ver, fix:"8.0.0.0") >= 0))
  audit(AUDIT_INST_VER_NOT_VULN, "Internet Explorer", ie_ver);

rootfile = hotfix_get_systemroot();
if (!rootfile) exit(1, "Failed to get the system root.");

share = hotfix_path2share(path:rootfile);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

vuln = 0;

# VBScript 5.8
# only on Server Core 2008 R2
kb = "3094995";
if (
  hotfix_check_server_core() == 1 &&
  (
   # Windows Server 2008 R2
    hotfix_is_vulnerable(os:"6.1", sp:1, file:"Vbscript.dll", version:"5.8.7601.23194", min_version:"5.8.7601.22000", dir:"\system32", bulletin:bulletin, kb:kb) ||
    hotfix_is_vulnerable(os:"6.1", sp:1, file:"Vbscript.dll", version:"5.8.7601.18991", min_version:"5.8.7601.0",     dir:"\system32", bulletin:bulletin, kb:kb)
  )
) vuln++;

# VBScript 5.7
kb = "3094996";
if (
  # Vista / Windows 2008
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"Vbscript.dll", version:"5.7.6002.23798", min_version:"5.7.6002.22000", dir:"\System32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"Vbscript.dll", version:"5.7.6002.19488", min_version:"5.7.6002.0", dir:"\System32", bulletin:bulletin, kb:kb)

) vuln++;

if (vuln)
{
  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');
}