Cisco Email Security Appliance ZIP File Filter Bypass

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

include("compat.inc");

if (description)
{
  script_id(78737);
  script_version("1.6");
  script_cvs_date("Date: 2018/11/15 20:50:20");

  script_cve_id("CVE-2014-3381");
  script_bugtraq_id(70414);
  script_xref(name:"CISCO-BUG-ID", value:"CSCup07934");

  script_name(english:"Cisco Email Security Appliance ZIP File Filter Bypass");
  script_summary(english:"Checks the ESA version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote appliance is affected by a security bypass vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the Cisco AsyncOS running on
the remote Cisco Email Security (ESA) appliance is affected by a
security bypass vulnerability in which the ZIP inspection engine of
AsyncOS does not properly analyze files, thus allowing a remote,
unauthenticated attacker to deliver malicious content by using a
specially crafted ZIP file.");
  script_set_attribute(attribute:"see_also", value:"https://tools.cisco.com/security/center/viewAlert.x?alertId=36062");
  # https://tools.cisco.com/security/center/viewAlert.x?alertId=36062
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cfca5e00");
  script_set_attribute(attribute:"solution", value:"Contact the vendor regarding a fix for Cisco bug ID CSCup07934.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  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:L/I:N/A:N");
  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:"2014/10/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:cisco:email_security_appliance");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:email_security_appliance_firmware");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2014-2018 Tenable Network Security, Inc.");

  script_dependencies("cisco_esa_version.nasl");
  script_require_keys("Host/AsyncOS/Cisco Email Security Appliance/DisplayVersion", "Host/AsyncOS/Cisco Email Security Appliance/Version");

  exit(0);
}

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

display_ver = get_kb_item_or_exit('Host/AsyncOS/Cisco Email Security Appliance/DisplayVersion');
# 'ver' is converted in cisco_esa_version.nasl, e.g.,
# '8.0.1-023' becomes '8.0.1.023'.
ver = get_kb_item_or_exit('Host/AsyncOS/Cisco Email Security Appliance/Version');

# Per vendor :
#
# Alert ID 36062
# 7.1 .0, .1, .2, .3, .4, .5
# 7.3 .0, .1, .2
# 7.5 .0, .1, .2
# 7.6 .0, .1, .2
# 7.8 Base
# 8.0 Base
# 8.5 Base
#
# Bug CSCup07934
# 8.0.1(Venetian)-023
# 8.5.6(FourQueens)-074
# 8.5.6(FourQueens)-092
# 8.6.0(FourQueens)-047
if (
  # Alert
  ver =~ "^7\.1\.[0-5]($|[^0-9])"     ||
  ver =~ "^7\.[356]\.[0-2]($|[^0-9])" ||
  ver =~ "^7\.8\.0($|[^0-9])" ||
  ver =~ "^8\.0\.0($|[^0-9])" ||
  ver =~ "^8\.5\.0($|[^0-9])" ||
  # Bug
  ver == "8.0.1.023" ||
  ver == "8.5.6.074" ||
  ver == "8.5.6.092" ||
  ver == "8.6.0.047"
)
{
  if (report_verbosity > 0)
  {
    report =
      '\n  Installed version : ' + display_ver +
      '\n  Fixed version     : See solution.' +
      '\n';
    security_warning(port:0, extra:report);
  }
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_INST_VER_NOT_VULN, 'Cisco ESA', display_ver);