Mac OS X Multiple Vulnerabilities (Security Update 2015-003)

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

include("compat.inc");

if (description)
{
  script_id(81977);
  script_version("1.8");
  script_cvs_date("Date: 2018/07/14  1:59:36");

  script_cve_id(
    "CVE-2015-1061",
    "CVE-2015-1065"
  );
  script_bugtraq_id(
    73004,
    73007
  );
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2015-03-19-1");

  script_name(english:"Mac OS X Multiple Vulnerabilities (Security Update 2015-003)");
  script_summary(english:"Checks for the presence of Security Update 2015-003.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is missing a Mac OS X update that fixes multiple
security issues.");
  script_set_attribute(attribute:"description", value:
"The remote host is running a version of Mac OS X 10.10.2 that is
missing Security Update 2015-003. It is, therefore, affected by the
following vulnerabilities :

  - A type confusion flaw exists in how IOSurface handles
    serialized objects, which an attacker can use to execute
    arbitrary code with system privileges. (CVE-2015-1061)

  - Multiple buffer overflows exist due to iCloud Keychain
    improperly validating user-supplied input. A remote,
    man-in-the-middle attacker can exploit this, via
    altering the client-server data stream during keychain
    recovery, to cause a denial of service condition or to
    execute arbitrary code. (CVE-2015-1065)");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT204563");
  script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/archive/1/534942");
  script_set_attribute(attribute:"solution", value:
"Install Security Update 2015-003 or later.");
  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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  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:"2015/03/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/03/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x");
  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("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/MacOSX/Version", "Host/MacOSX/packages/boms");

  exit(0);
}

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

patch = "2015-003";

# Compare 2 patch numbers to determine if patch requirements are satisfied.
# Return true if this patch or a later patch is applied
# Return false otherwise
function check_patch(year, number)
{
  local_var p_split = split(patch, sep:"-");
  local_var p_year  = int( p_split[0]);
  local_var p_num   = int( p_split[1]);

  if (year >  p_year) return TRUE;
  else if (year <  p_year) return FALSE;
  else if (number >=  p_num) return TRUE;
  else return FALSE;
}

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

# Advisory states that the update is available for 10.10.2
os = get_kb_item("Host/MacOSX/Version");
if (!os) audit(AUDIT_OS_NOT, "Mac OS X");
if (!ereg(pattern:"Mac OS X 10\.10\.2([^0-9]|$)", string:os)) audit(AUDIT_OS_NOT, "Mac OS X 10.10.2");

packages = get_kb_item_or_exit("Host/MacOSX/packages/boms", exit_code:1);
sec_boms_report = egrep(pattern:"^com\.apple\.pkg\.update\.security\..*bom$", string:packages);
sec_boms = split(sec_boms_report, sep:'\n');

foreach package (sec_boms)
{
  # Grab patch year and number
  match = eregmatch(pattern:"[^0-9](20[0-9][0-9])[-.]([0-9]{3})[^0-9]", string:package);
  if (empty_or_null(match[1]) || empty_or_null(match[2]))
    continue;

  patch_found = check_patch(year:int(match[1]), number:int(match[2]));
  if (patch_found) exit(0, "The host has Security Update " + patch + " or later installed and is therefore not affected.");
}

report =  '\n  Missing security update : ' + patch;
report += '\n  Installed security BOMs : ';
if (sec_boms_report) report += str_replace(find:'\n', replace:'\n                            ', string:sec_boms_report);
else report += 'n/a';
report += '\n';

security_report_v4(port:0, severity:SECURITY_HOLE, extra:report);