Vulnerabilities > CVE-2015-6038 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Microsoft products

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

include("compat.inc");

if (description)
{
  script_id(86817);
  script_version("1.9");
  script_cvs_date("Date: 2018/07/16 12:48:31");

  script_cve_id("CVE-2015-6038", "CVE-2015-6094", "CVE-2015-6123");
  script_xref(name:"MSFT", value:"MS15-116");
  script_xref(name:"IAVA", value:"2015-A-0272");
  script_xref(name:"MSKB", value:"3102924");
  script_xref(name:"MSKB", value:"3102925");

  script_name(english:"MS15-116: Security Updates for Microsoft Office to Address Remote Code Execution (3104540) (Mac OS X)");
  script_summary(english:"Checks the version of Microsoft Office.");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote Mac OS X host is affected by
multiple remote code execution vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Microsoft Office installed on the remote Mac OS X host
is affected by multiple vulnerabilities :

  - Multiple remote code execution vulnerabilities exist due
    to improper handling of objects in memory. A remote
    attacker can exploit these vulnerabilities by convincing
    a user to open a specially crafted Office file,
    resulting in execution of arbitrary code in the context
    of the current user. (CVE-2015-6038, CVE-2015-6094)

  - A spoofing vulnerability exists in Microsoft Outlook for
    Mac due to improper sanitization of HTML content. A
    remote attacker can exploit this, via a crafted email,
    to spoof content or to chain an attack to other
    vulnerabilities in web services. (CVE-2015-6123)");
  script_set_attribute(attribute:"see_also", value:"https://technet.microsoft.com/library/security/ms15-116");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released patches for Office for Mac 2011 and for Office
2016 for Mac.");
  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_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:"2015/11/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/11/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/11/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office:2011:mac");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office:2016:mac");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel_for_mac:2011");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel_for_mac:2016");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"MacOS X Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2015-2018 Tenable Network Security, Inc.");

  script_dependencies("macosx_office_installed.nbin");
  script_require_keys("Host/MacOSX/Version");
  script_require_ports("installed_sw/Office for Mac 2011", "installed_sw/Microsoft Outlook", "installed_sw/Microsoft Excel", "installed_sw/Microsoft Word", "installed_sw/Microsoft PowerPoint", "installed_sw/Microsoft OneNote");
  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("install_func.inc");

os = get_kb_item("Host/MacOSX/Version");
if (!os) audit(AUDIT_OS_NOT, "Mac OS X");

# Office 2011
apps = make_list(
  "Office for Mac 2011",
  "Microsoft Outlook",
  "Microsoft Excel",
  "Microsoft Word",
  "Microsoft PowerPoint",
  "Microsoft OneNote"
);

report = "";

foreach app (apps)
{
  installs = get_installs(app_name:app);
  if (isnull(installs[1])) continue;
  foreach install (installs[1])
  {
    version = install['version'];
    path    = install['path'];

    if (version =~ "^14\.") fix = '14.5.8';
    else fix = '15.16';

    if (ver_compare(ver:version, fix:fix, strict:FALSE) < 0)
    {
      report +=
        '\n  Product           : ' + app +
        '\n  Installed version : ' + version +
        '\n  Fixed version     : ' + fix;

      os = get_kb_item("Host/MacOSX/Version");

      if (os =~ "^Mac OS X 10\.[0-9](\.|$)" && app != "Office for Mac 2011")
        report += '\n  Note              : Update will require Mac OS X 10.10.0 or later.\n';
      else report += '\n';
    }
  }
}

# Report findings.
if (!empty(report))
{
  if (report_verbosity > 0) security_hole(port:0, extra:report);
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");