Vulnerabilities > CVE-2018-6809 - Unspecified vulnerability in Citrix products

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
citrix
critical
nessus

Summary

NetScaler ADC 10.5, 11.0, 11.1, and 12.0, and NetScaler Gateway 10.5, 11.0, 11.1, and 12.0 allow remote attackers to gain privilege on a target system.

Nessus

NASL familyCGI abuses
NASL idCITRIX_NETSCALER_CTX232161.NASL
descriptionThe remote Citrix NetScaler device is affected by multiple vulnerabilities in the Application Delivery Controller (ADC) and the Gateway Management Interface. Please refer to advisory CTX232161 for more information.
last seen2020-06-01
modified2020-06-02
plugin id110903
published2018-07-05
reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/110903
titleCitrix NetScaler Multiple Vulnerabilities (CTX232161)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(110903);
  script_version("1.2");
  script_cvs_date("Date: 2019/11/04");

  script_cve_id(
    "CVE-2018-6186",
    "CVE-2018-6808",
    "CVE-2018-6809",
    "CVE-2018-6810",
    "CVE-2018-6811"
  );
  script_bugtraq_id(102915);

  script_name(english:"Citrix NetScaler Multiple Vulnerabilities (CTX232161)");
  script_summary(english:"Checks the Citrix NetScaler version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Citrix NetScaler device is affected by multiple
vulnerabilities in the Application Delivery Controller (ADC) and the
Gateway Management Interface. Please refer to advisory CTX232161 for
more information.");
  script_set_attribute(attribute:"see_also", value:"https://support.citrix.com/article/CTX232161");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Citrix NetScaler ADC and Gateway version 10.5 build 67.10
/ 11.0 build 71.18 / 11.1 build 56.15 / 12.0 build 57.19 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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: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-2018-6809");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/05");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:citrix:netscaler_application_delivery_controller_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:citrix:netscaler_access_gateway_firmware");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("citrix_netscaler_detect.nbin");
  script_require_keys("Host/NetScaler/Detected");

  exit(0);
}

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

app_name = "Citrix NetScaler";
version = get_kb_item_or_exit("Host/NetScaler/Version");
build = get_kb_item("Host/NetScaler/Build");
enhanced = get_kb_item("Host/NetScaler/Enhanced");
fixed_build = NULL;

if (isnull(build)) exit(0, "The build number of " + app_name + " " + version + " could not be determined.");

display_version = version + "-" + build;
version = version + "." + build;

if (!enhanced)
{
  # non-enhanced builds
  if (version =~ "^10\.5" && ver_compare(ver:build, fix:"67.10") == -1)
  {
    fixed_build = "67.10";
  }
  else if (version =~ "^11\.0" && ver_compare(ver:build, fix:"71.18") == -1)
  {
    fixed_build = "71.18";
  }
  else if (version =~ "^11\.1" && ver_compare(ver:build, fix:"56.15") == -1)
  {
    fixed_build = "56.15";
  }
  else if (version =~ "^12\.0" && ver_compare(ver:build, fix:"57.19") == -1)
  {
    fixed_build = "57.19";
  }
}

if (isnull(fixed_build))
{
  audit(AUDIT_INST_VER_NOT_VULN, app_name, display_version);
}

report =
   '\n  Installed version : ' + display_version +
   '\n  Installed build   : ' + build +
   '\n  Fixed build       : ' + fixed_build +
   '\n';

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