ImageMagick 6.x < 6.9.6-5 TIFFGetProperties() NULL Pointer Dereference DoS

2016-12-12T00:00:00
ID IMAGEMAGICK_6_9_6_5.NASL
Type nessus
Reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2019-11-13T00:00:00

Description

The version of ImageMagick installed on the remote Windows host is 6.x prior to 6.9.6-5. It is, therefore, affected by a denial of service vulnerability due to a NULL pointer dereference flaw in the TIFFGetProperties() function within file coders/tiff.c. An unauthenticated, remote attacker can exploit this, via a specially crafted TIFF image, to crash a process linked against the library.

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

include("compat.inc");

if (description)
{
  script_id(95719);
  script_version("1.8");
  script_cvs_date("Date: 2019/11/13");

  script_cve_id("CVE-2016-9559");
  script_bugtraq_id(94489);

  script_name(english:"ImageMagick 6.x < 6.9.6-5 TIFFGetProperties() NULL Pointer Dereference DoS");
  script_summary(english:"Checks the version of ImageMagick.");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote Windows host is affected by a
denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of ImageMagick installed on the remote Windows host is 6.x
prior to 6.9.6-5. It is, therefore, affected by a denial of service
vulnerability due to a NULL pointer dereference flaw in the
TIFFGetProperties() function within file coders/tiff.c.
An unauthenticated, remote attacker can exploit this, via a specially
crafted TIFF image, to crash a process linked against the library.");
  script_set_attribute(attribute:"see_also", value:"https://github.com/ImageMagick/ImageMagick/issues/298");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/oss-sec/2016/q4/472");
  script_set_attribute(attribute:"solution", value:
"Upgrade to ImageMagick version 6.9.6-5 or later. Note that you may
also need to manually uninstall the vulnerable version from the
system.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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-2016-9559");

  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:"2016/11/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/11/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/12/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:imagemagick:imagemagick");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("imagemagick_installed.nasl");
  script_require_keys("installed_sw/ImageMagick");

  exit(0);
}

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

app = "ImageMagick";
fix = "6.9.6";
fix_build = 5;

# Get installs
install = get_single_install(app_name:app, exit_if_unknown_ver:TRUE);
display_version = install['display_version'];
version         = install['version'];
build           = install['build'];
path            = install['path'];

vuln = FALSE;

display_fix = fix + "-" + fix_build;

if (version !~ "^6\.") audit(AUDIT_NOT_INST, "ImageMagick 6.x");

if (ver_compare(ver:version, fix:fix, strict:FALSE) < 0)
  vuln = TRUE;

if ((ver_compare(ver:version, fix:fix, strict:FALSE) == 0)  &&
    build < fix_build
   )
  vuln = TRUE;

if (vuln)
{
  port = get_kb_item("SMB/transport");
  if (!port) port = 445;

  items = make_array("Installed version", display_version,
                     "Fixed version", display_fix,
                     "Path", path
                    );

  order = make_list("Path", "Installed version", "Fixed version");
  report = report_items_str(report_items:items, ordered_fields:order);

  security_report_v4(port:port, extra:report, severity:SECURITY_WARNING);
  exit(0);
}
else
  audit(AUDIT_INST_PATH_NOT_VULN, app, display_version, path);