F5 Networks BIG-IP : NTP vulnerability (K17516)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K17516.
#
# The text description of this plugin is (C) F5 Networks.
#

include("compat.inc");

if (description)
{
  script_id(88815);
  script_version("2.11");
  script_cvs_date("Date: 2019/01/04 10:03:40");

  script_cve_id("CVE-2015-7852");

  script_name(english:"F5 Networks BIG-IP : NTP vulnerability (K17516)");
  script_summary(english:"Checks the BIG-IP version.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote device is missing a vendor-supplied security patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"ntpq in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows
remote attackers to cause a denial of service (crash) via crafted mode
6 response packets. (CVE-2015-7852)

Impact

While the scope of the impact is limited, an attacker may be able to
craft response packets that cause ntpq to exit. There is no data plane
exposure for the BIG-IP system, and this issue can only be exposed
when an instance of ntpq is running in interactive mode."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://support.f5.com/csp/article/K17516"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade to one of the non-vulnerable versions listed in the F5
Solution K17516."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_access_policy_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_advanced_firewall_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_acceleration_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_security_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_visibility_and_reporting");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_global_traffic_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_link_controller");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_local_traffic_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_policy_enforcement_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_wan_optimization_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_webaccelerator");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip_protocol_security_manager");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/11/02");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/02/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"F5 Networks Local Security Checks");

  script_dependencies("f5_bigip_detect.nbin");
  script_require_keys("Host/local_checks_enabled", "Host/BIG-IP/hotfix", "Host/BIG-IP/modules", "Host/BIG-IP/version", "Settings/ParanoidReport");

  exit(0);
}


include("f5_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
version = get_kb_item("Host/BIG-IP/version");
if ( ! version ) audit(AUDIT_OS_NOT, "F5 Networks BIG-IP");
if ( isnull(get_kb_item("Host/BIG-IP/hotfix")) ) audit(AUDIT_KB_MISSING, "Host/BIG-IP/hotfix");
if ( ! get_kb_item("Host/BIG-IP/modules") ) audit(AUDIT_KB_MISSING, "Host/BIG-IP/modules");

sol = "K17516";
vmatrix = make_array();

if (report_paranoia < 2) audit(AUDIT_PARANOID);

# AFM
vmatrix["AFM"] = make_array();
vmatrix["AFM"]["affected"  ] = make_list("12.0.0","11.6.0","11.3.0-11.5.3");
vmatrix["AFM"]["unaffected"] = make_list("12.1.0","12.0.0HF3","11.6.1","11.5.4","11.4.1HF10");

# AM
vmatrix["AM"] = make_array();
vmatrix["AM"]["affected"  ] = make_list("12.0.0","11.6.0","11.4.0-11.5.3");
vmatrix["AM"]["unaffected"] = make_list("12.1.0","12.0.0HF3","11.6.1","11.5.4","11.4.1HF10");

# APM
vmatrix["APM"] = make_array();
vmatrix["APM"]["affected"  ] = make_list("12.0.0","11.6.0","11.0.0-11.5.3","10.1.0-10.2.4");
vmatrix["APM"]["unaffected"] = make_list("12.1.0","12.0.0HF3","11.6.1","11.5.4","11.4.1HF10");

# ASM
vmatrix["ASM"] = make_array();
vmatrix["ASM"]["affected"  ] = make_list("12.0.0","11.6.0","11.0.0-11.5.3","10.1.0-10.2.4");
vmatrix["ASM"]["unaffected"] = make_list("12.1.0","12.0.0HF3","11.6.1","11.5.4","11.4.1HF10");

# AVR
vmatrix["AVR"] = make_array();
vmatrix["AVR"]["affected"  ] = make_list("12.0.0","11.6.0","11.0.0-11.5.3");
vmatrix["AVR"]["unaffected"] = make_list("12.1.0","12.0.0HF3","11.6.1","11.5.4","11.4.1HF10");

# GTM
vmatrix["GTM"] = make_array();
vmatrix["GTM"]["affected"  ] = make_list("11.6.0","11.0.0-11.5.3","10.1.0-10.2.4");
vmatrix["GTM"]["unaffected"] = make_list("11.6.1","11.5.4","11.4.1HF10");

# LC
vmatrix["LC"] = make_array();
vmatrix["LC"]["affected"  ] = make_list("12.0.0","11.6.0","11.0.0-11.5.3","10.1.0-10.2.4");
vmatrix["LC"]["unaffected"] = make_list("12.1.0","12.0.0HF3","11.6.1","11.5.4","11.4.1HF10");

# LTM
vmatrix["LTM"] = make_array();
vmatrix["LTM"]["affected"  ] = make_list("12.0.0","11.6.0","11.0.0-11.5.3","10.1.0-10.2.4");
vmatrix["LTM"]["unaffected"] = make_list("12.1.0","12.0.0HF3","11.6.1","11.5.4","11.4.1HF10");

# PEM
vmatrix["PEM"] = make_array();
vmatrix["PEM"]["affected"  ] = make_list("12.0.0","11.6.0","11.3.0-11.5.3");
vmatrix["PEM"]["unaffected"] = make_list("12.1.0","12.0.0HF3","11.6.1","11.5.4","11.4.1HF10");

# PSM
vmatrix["PSM"] = make_array();
vmatrix["PSM"]["affected"  ] = make_list("11.0.0-11.4.1","10.1.0-10.2.4");
vmatrix["PSM"]["unaffected"] = make_list("11.4.1HF10");


if (bigip_is_affected(vmatrix:vmatrix, sol:sol))
{
  if (report_verbosity > 0) security_warning(port:0, extra:bigip_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = bigip_get_tested_modules();
  audit_extra = "For BIG-IP module(s) " + tested + ",";
  if (tested) audit(AUDIT_INST_VER_NOT_VULN, audit_extra, version);
  else audit(AUDIT_HOST_NOT, "running any of the affected modules");
}