PHP 5.5.x < 5.5.28 Multiple Vulnerabilities

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(85299);
  script_version("1.17");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id(
    "CVE-2015-6831",
    "CVE-2015-6832",
    "CVE-2015-6833",
    "CVE-2015-6836",
    "CVE-2015-8835",
    "CVE-2015-8867",
    "CVE-2015-8873",
    "CVE-2015-8876"
  );
  script_xref(name:"EDB-ID", value:"38304");

  script_name(english:"PHP 5.5.x < 5.5.28 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server uses a version of PHP that is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its banner, the version of PHP running on the remote web
server is 5.5.x prior to 5.5.28. It is, therefore, affected by
multiple vulnerabilities :

  - Multiple use-after-free errors exist in spl_array.c,
    spl_observer.c, and spl_dllist.c due to improper
    sanitization of input to the unserialize() function. An
    attacker can exploit these issues, by using a specially
    crafted SplDoublyLinkedList, SplArrayObject, or
    SplObjectStorage object, to deference freed memory and
    thus execute arbitrary code. (CVE-2015-6831)

  - A dangling pointer error exists in file spl_array.c due
    to improper sanitization of input to the unserialize()
    function. An attacker can exploit this, by using a
    specially crafted SplDoublyLinkedList object, to gain
    control over a deallocated pointer and thus execute
    arbitrary code. (CVE-2015-6832)

  - A path traversal flaw exists in file phar_object.c due
    to improper sanitization of user-supplied input. An
    attacker can exploit this to write arbitrary files.
    (CVE-2015-6833)

  - A type confusion flaw exists in the
    serialize_function_call() function in soap.c due to
    improper validation of input passed via the header
    field. A remote attacker can exploit this to execute
    arbitrary code. (CVE-2015-6836)

  - Multiple type confusion flaws exist in the _call()
    method in file php_http.c when handling calls for
    zend_hash_get_current_key or 'Z*'. An attacker can
    exploit this to disclose memory contents or crash
    an application using PHP. (CVE-2015-8835)

  - The openssl_random_pseudo_bytes() function in file
    openssl.c does not generate sufficiently random numbers.
    This allows an attacker to more easily predict the
    results, thus allowing further attacks to be carried
    out. (CVE-2015-8867)

  - A flaw exists in file zend_exceptions.c due to the
    improper use of the function unserialize() during
    recursive method calls. A remote attacker can exploit
    this to crash an application using PHP. (CVE-2015-8873)

  - A flaw exists in file zend_exceptions.c due to
    insufficient type checking by functions unserialize()
    and __toString(). A remote attacker can exploit this to
    cause a NULL pointer deference or unexpected method
    execution, thus causing an application using PHP to
    crash. (CVE-2015-8876)

  - An integer truncation flaw exists in the
    zend_hash_compare() function in zend_hash.c that is
    triggered when comparing arrays. A remote attacker can
    exploit this to cause arrays to be improperly matched
    during comparison.
    
Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"http://php.net/ChangeLog-5.php#5.5.28");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2015/Aug/17");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2015/Aug/18");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2015/Aug/19");
  script_set_attribute(attribute:"see_also", value:"https://bugs.php.net/bug.php?id=69793");
  script_set_attribute(attribute:"see_also", value:"https://bugs.php.net/bug.php?id=70121");
  script_set_attribute(attribute:"solution", value:
"Upgrade to PHP version 5.5.28 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/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:"cvss_score_source", value:"CVE-2015-8876");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/06/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/08/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/08/11");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:php:php");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2015-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("php_version.nasl");
  script_require_keys("www/PHP");
  script_require_ports("Services/www", 80);

  exit(0);
}

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

port = get_http_port(default:80, php:TRUE);

php = get_php_from_kb(
  port : port,
  exit_on_fail : TRUE
);

version = php["ver"];
source = php["src"];

backported = get_kb_item('www/php/'+port+'/'+version+'/backported');

if (report_paranoia < 2 && backported) audit(AUDIT_BACKPORT_SERVICE, port, "PHP "+version+" install");

# Check that it is the correct version of PHP
if (version =~ "^5(\.5)?$") audit(AUDIT_VER_NOT_GRANULAR, "PHP", port, version);
if (version !~ "^5\.5\.") audit(AUDIT_NOT_DETECT, "PHP version 5.5.x", port);

if (version =~ "^5\.5\.([0-9]|1[0-9]|2[0-7])($|[^0-9])")
{
  if (report_verbosity > 0)
  {
    report =
      '\n  Version source    : ' + source +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : 5.5.28' +
      '\n';
    security_hole(port:port, extra:report);
  }
  else security_hole(port);
  exit(0);
}
else audit(AUDIT_LISTEN_NOT_VULN, "PHP", port, version);